[tryton-debian-vcs] tryton-proteus branch debian created. a6844b788d011436a2d804cc8572cc53f0499d11

Mathias Behrle tryton-debian-vcs at alioth.debian.org
Wed Nov 27 17:13:08 UTC 2013


The following commit has been merged in the debian branch:
https://alioth.debian.org/plugins/scmgit/cgi-bin/gitweb.cgi/?p=tryton/tryton-proteus.git;a=commitdiff;h=a6844b788d011436a2d804cc8572cc53f0499d11
commit a6844b788d011436a2d804cc8572cc53f0499d11
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Nov 25 20:30:43 2013 +0100

    Releasing debian version 3.0.0-1.

diff --git a/debian/changelog b/debian/changelog
index cd7d0a2..8fc2aa3 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+tryton-proteus (3.0.0-1) unstable; urgency=low
+
+  * Merging upstream version 3.0.0.
+  * Updating to standards version 3.9.5, no changes needed.
+  * Changing to buildsystem pybuild.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Mon, 25 Nov 2013 17:55:58 +0100
+
 tryton-proteus (2.8.0-3) unstable; urgency=low
 
   * Adapting the rules file to work also with git-buildpackage.
commit 3afe14ac88b583eb121316f96760d49987c4891c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Nov 24 19:51:52 2013 +0100

    Changing to buildsystem pybuild.

diff --git a/debian/control b/debian/control
index a48186e..102cbba 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,8 @@ Priority: optional
 Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Mathias Behrle <mathiasb at m9s.biz>
 Build-Depends:
- debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
+ debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools,
+ dh-python
 Standards-Version: 3.9.5
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
diff --git a/debian/rules b/debian/rules
index 30074ad..5b8c326 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,24 +1,17 @@
 #!/usr/bin/make -f
 
-MAJOR := $(shell python setup.py --version | awk -F "." '{print $$1 "." $$2}')
-PACKAGE_NAME := $(shell python setup.py --name)
-
-%:
-	dh ${@} --with python2
+# needed for pbuilder
+export LC_ALL=C.UTF-8
 
-override_dh_auto_clean:
-	dh_auto_clean
+MAJOR := $(shell python setup.py --version | awk -F "." '{print $$1 "." $$2}')
+PACKAGE_NAME := tryton-modules-$(shell python setup.py --name | sed s/^trytond_// | sed s/_/-/g)
+export PYBUILD_DESTDIR_python2=debian/${PACKAGE_NAME}
 
-override_dh_auto_build:
-	mv $(PACKAGE_NAME).egg-info $(PACKAGE_NAME).hen-info
-	mv PKG-INFO PKG-INFO.hen
-	dh_auto_build
+# Don't run tests for Tryton modules, they try to download dependencies from pypi
+export PYBUILD_DISABLE_python2.7=test
 
-override_dh_auto_install:
-	dh_auto_install
-	rm -rf *.egg-info
-	mv $(PACKAGE_NAME).hen-info $(PACKAGE_NAME).egg-info
-	mv PKG-INFO.hen PKG-INFO
+%:
+	dh ${@} --with python2 --buildsystem=pybuild
 
 override_dh_gencontrol:
 	dh_gencontrol -- -Vversion:major="$(MAJOR)"
commit 92e554abad8d765bcb1c5b72108ee5bbbf47c4aa
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Nov 24 19:14:21 2013 +0100

    Updating to standards version 3.9.5, no changes needed.

diff --git a/debian/control b/debian/control
index 889a182..a48186e 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@ Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Mathias Behrle <mathiasb at m9s.biz>
 Build-Depends:
  debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
-Standards-Version: 3.9.4
+Standards-Version: 3.9.5
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
 Vcs-Git: git://debian.tryton.org/packages/tryton-proteus.git
commit 1f7ff8529e97574b5c9266e7e03bfa179f6561ec
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Nov 24 17:28:49 2013 +0100

    Merging upstream version 3.0.0.

diff --git a/CHANGELOG b/CHANGELOG
index 628c5ee..6579877 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Version 3.0.0 - 2013-10-21
+* Bug fixes (see mercurial logs for details)
+
 Version 2.8.0 - 2013-04-22
 * Bug fixes (see mercurial logs for details)
 * Add support of fields.Dict
diff --git a/PKG-INFO b/PKG-INFO
index 528d96a..9a334cb 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.1
 Name: proteus
-Version: 2.8.0
+Version: 3.0.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: Tryton
 Author-email: UNKNOWN
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.8/
+Download-URL: http://downloads.tryton.org/3.0/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 528d96a..9a334cb 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.1
 Name: proteus
-Version: 2.8.0
+Version: 3.0.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: Tryton
 Author-email: UNKNOWN
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.8/
+Download-URL: http://downloads.tryton.org/3.0/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index d9c9147..2275f28 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -4,7 +4,7 @@ python-dateutil
 cdecimal
 
 [trytond]
-trytond >= 2.8, < 2.9
+trytond >= 3.0, < 3.1
 
 [simplejson]
 simplejson
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index 257d1c9..9843977 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.8.0"
+__version__ = "3.0.0"
 __all__ = ['Model', 'Wizard']
 import sys
 try:
@@ -351,6 +351,7 @@ class MetaModelFactory(object):
         'reference': ReferenceDescriptor,
         'date': DateDescriptor,
         'datetime': DateTimeDescriptor,
+        'timestamp': DateTimeDescriptor,
         'time': TimeDescriptor,
         'dict': DictDescriptor,
         'many2one': Many2OneDescriptor,
@@ -630,7 +631,8 @@ class Model(object):
     def __cmp__(self, other):
         'Compare with other'
         if isinstance(other, Model):
-            return cmp(self.id, other.id)
+            return cmp((self.__class__.__name__, self.id),
+                (other.__class__.__name__, other.id))
         if isinstance(other, (bool, NoneType)):
             return 1
         raise NotImplementedError
diff --git a/proteus/config.py b/proteus/config.py
index 436ce8e..39a3148 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -178,10 +178,11 @@ class TrytondConfig(Config):
         super(TrytondConfig, self).__init__()
         from trytond.config import CONFIG
         CONFIG.update_etc(config_file)
+        CONFIG.set_timezone()
         if database_type is not None:
             CONFIG['db_type'] = database_type
         from trytond.pool import Pool
-        from trytond.backend import Database
+        from trytond import backend
         from trytond.protocols.dispatcher import create
         from trytond.cache import Cache
         from trytond.transaction import Transaction
@@ -197,12 +198,9 @@ class TrytondConfig(Config):
 
         Pool.start()
 
-        database = Database().connect()
-        cursor = database.cursor()
-        try:
-            databases = database.list(cursor)
-        finally:
-            cursor.close()
+        with Transaction().start(None, 0) as transaction:
+            cursor = transaction.cursor
+            databases = backend.get('Database').list(cursor)
         if database_name not in databases:
             create(database_name, CONFIG['admin_passwd'], language, password)
 
commit e2ea684b802fcbf4771d2fbf1074874431af8b24
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Aug 6 16:21:19 2013 +0200

    Releasing debian version 2.8.0-3.

diff --git a/debian/changelog b/debian/changelog
index 133dc67..cd7d0a2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+tryton-proteus (2.8.0-3) unstable; urgency=low
+
+  * Adapting the rules file to work also with git-buildpackage.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Tue, 06 Aug 2013 13:33:56 +0200
+
 tryton-proteus (2.8.0-2) unstable; urgency=low
 
   * Removing needless empty line in rules.
commit 3d6c886952fba48df773b5451ee2b71b8219e0ae
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Aug 5 18:06:36 2013 +0200

    Adapting the rules file to work also with git-buildpackage.

diff --git a/debian/rules b/debian/rules
index b918925..30074ad 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,11 +1,27 @@
 #!/usr/bin/make -f
 
+MAJOR := $(shell python setup.py --version | awk -F "." '{print $$1 "." $$2}')
+PACKAGE_NAME := $(shell python setup.py --name)
+
 %:
 	dh ${@} --with python2
 
 override_dh_auto_clean:
 	dh_auto_clean
+
+override_dh_auto_build:
+	mv $(PACKAGE_NAME).egg-info $(PACKAGE_NAME).hen-info
+	mv PKG-INFO PKG-INFO.hen
+	dh_auto_build
+
+override_dh_auto_install:
+	dh_auto_install
 	rm -rf *.egg-info
+	mv $(PACKAGE_NAME).hen-info $(PACKAGE_NAME).egg-info
+	mv PKG-INFO.hen PKG-INFO
+
+override_dh_gencontrol:
+	dh_gencontrol -- -Vversion:major="$(MAJOR)"
 
 override_dh_builddeb:
 	dh_builddeb -- -Zxz -z9
commit 79471fbea8a7c87a646702d2d9dc72b578c8b623
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri May 31 19:57:38 2013 +0200

    Releasing debian version 2.8.0-2.

diff --git a/debian/changelog b/debian/changelog
index 79356a1..133dc67 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+tryton-proteus (2.8.0-2) unstable; urgency=low
+
+  * Removing needless empty line in rules.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Fri, 31 May 2013 17:27:39 +0200
+
 tryton-proteus (2.8.0-1) experimental; urgency=low
 
   * Merging upstream version 2.8.0.
commit b76b133e5a89538eba41945e8d193ec1d7c76857
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed May 29 17:19:30 2013 +0200

    Removing needless empty line in rules.

diff --git a/debian/rules b/debian/rules
index 1ae0776..b918925 100755
--- a/debian/rules
+++ b/debian/rules
@@ -5,7 +5,6 @@
 
 override_dh_auto_clean:
 	dh_auto_clean
-
 	rm -rf *.egg-info
 
 override_dh_builddeb:
commit eef0f30eb9e156d082c376527e015abb14e05f0c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Thu May 2 17:27:15 2013 +0200

    Releasing debian version 2.8.0-1.

diff --git a/debian/changelog b/debian/changelog
index 9477483..79356a1 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+tryton-proteus (2.8.0-1) experimental; urgency=low
+
+  * Merging upstream version 2.8.0.
+  * Updating copyright.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Thu, 02 May 2013 15:21:21 +0200
+
 tryton-proteus (2.6.1-3) experimental; urgency=low
 
   * Removing Daniel from Uploaders. Thanks for your work! (Closes: #704409).
commit 56a24af54b885903c304aec7ed5fcc17c9acd28c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Thu May 2 14:13:11 2013 +0200

    Updating copyright.

diff --git a/debian/copyright b/debian/copyright
index 6d5c31e..1d0f2ad 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,8 +1,8 @@
 Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
 Files: *
-Copyright: 2010-2012 Cédric Krier
-           2010-2012 B2CK SPRL
+Copyright: 2010-2013 Cédric Krier
+           2010-2013 B2CK SPRL
 License: LGPL-3+
 
 Files: debian/*
commit 014a664a74b59ed36d2ab050a428e955919b7238
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Thu May 2 00:38:34 2013 +0200

    Merging upstream version 2.8.0.

diff --git a/CHANGELOG b/CHANGELOG
index c9af7ca..628c5ee 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
-Version 2.6.1 - 2012-11-05
+Version 2.8.0 - 2013-04-22
 * Bug fixes (see mercurial logs for details)
+* Add support of fields.Dict
 
 Version 2.6.0 - 2012-10-22
 * Bug fixes (see mercurial logs for details)
diff --git a/COPYRIGHT b/COPYRIGHT
index e792a2c..7e8c156 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,5 +1,5 @@
-Copyright (C) 2010-2012 Cédric Krier.
-Copyright (C) 2010-2012 B2CK SPRL.
+Copyright (C) 2010-2013 Cédric Krier.
+Copyright (C) 2010-2013 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/PKG-INFO b/PKG-INFO
index d817b42..528d96a 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.1
 Name: proteus
-Version: 2.6.1
+Version: 2.8.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
-Author: B2CK
-Author-email: info at b2ck.com
+Author: Tryton
+Author-email: UNKNOWN
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.6/
+Download-URL: http://downloads.tryton.org/2.8/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index d817b42..528d96a 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.1
 Name: proteus
-Version: 2.6.1
+Version: 2.8.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
-Author: B2CK
-Author-email: info at b2ck.com
+Author: Tryton
+Author-email: UNKNOWN
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.6/
+Download-URL: http://downloads.tryton.org/2.8/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index 4c333d6..d9c9147 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -4,7 +4,7 @@ python-dateutil
 cdecimal
 
 [trytond]
-trytond >= 2.6, < 2.7
+trytond >= 2.8, < 2.9
 
 [simplejson]
 simplejson
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index f2ec0cd..257d1c9 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.6.1"
+__version__ = "2.8.0"
 __all__ = ['Model', 'Wizard']
 import sys
 try:
@@ -186,6 +186,12 @@ class TimeDescriptor(FieldDescriptor):
         super(TimeDescriptor, self).__set__(instance, value)
 
 
+class DictDescriptor(FieldDescriptor):
+    def __set__(self, instance, value):
+        assert isinstance(value, dict) or value in (None, False)
+        super(DictDescriptor, self).__set__(instance, value)
+
+
 class Many2OneDescriptor(FieldDescriptor):
     def __get__(self, instance, owner):
         relation = Model.get(self.definition['relation'], instance._config)
@@ -268,6 +274,7 @@ class One2ManyValueDescriptor(ValueDescriptor):
     def __get__(self, instance, owner):
         value = [('add', [])]
         value_list = getattr(instance, self.name)
+        to_create = []
         for record in value_list:
             if record.id > 0:
                 if record._changed:
@@ -275,7 +282,9 @@ class One2ManyValueDescriptor(ValueDescriptor):
                         fields=record._changed)))
                 value[0][1].append(record.id)
             else:
-                value.append(('create', record._get_values()))
+                to_create.append(record._get_values())
+        if to_create:
+            value.append(('create', to_create))
         if value_list.record_removed:
             value.append(('unlink', [x.id for x in value_list.record_removed]))
         if value_list.record_deleted:
@@ -343,6 +352,7 @@ class MetaModelFactory(object):
         'date': DateDescriptor,
         'datetime': DateTimeDescriptor,
         'time': TimeDescriptor,
+        'dict': DictDescriptor,
         'many2one': Many2OneDescriptor,
         'one2many': One2ManyDescriptor,
         'many2many': Many2ManyDescriptor,
@@ -586,6 +596,9 @@ class Model(object):
     @classmethod
     def get(cls, name, config=None):
         'Get a class for the named Model'
+        if isinstance(name, unicode):
+            name = name.encode('utf-8')
+
         class Spam(Model):
             __metaclass__ = MetaModelFactory(name, config=config)()
         return Spam
@@ -646,7 +659,7 @@ class Model(object):
         context = self._config.context
         if self.id < 0:
             values = self._get_values()
-            self.__id = self._proxy.create(values, context)
+            self.__id, = self._proxy.create([values], context)
         else:
             if not self._changed:
                 return
@@ -753,7 +766,7 @@ class Model(object):
         values = self._get_on_change_value()
         if self._parent:
             values['_parent_%s' % self._parent_name] = \
-                    _EvalEnvironment(self._parent)
+                _EvalEnvironment(self._parent)
         for arg in args:
             scope = values
             for i in arg.split('.'):
@@ -879,7 +892,7 @@ class Wizard(object):
         assert state in self.states
 
         self.state = state
-        while self.state != 'end':
+        while self.state != self.end_state:
             ctx = self._context.copy()
             ctx.update(self._config.context)
             if self.models:
diff --git a/proteus/pyson.py b/proteus/pyson.py
index 830c057..462fce9 100644
--- a/proteus/pyson.py
+++ b/proteus/pyson.py
@@ -187,10 +187,10 @@ class And(PYSON):
         for statement in statements:
             if isinstance(statement, PYSON):
                 assert statement.types() == set([bool]), \
-                        'statement must be boolean'
+                    'statement must be boolean'
             else:
                 assert isinstance(statement, bool), \
-                        'statement must be boolean'
+                    'statement must be boolean'
         assert len(statements) >= 2, 'must have at least 2 statements'
         self._statements = list(statements)
 
@@ -258,10 +258,10 @@ class Greater(PYSON):
         for i in (statement1, statement2):
             if isinstance(i, PYSON):
                 assert i.types().issubset(set([int, long, float])), \
-                        'statement must be an integer or a float'
+                    'statement must be an integer or a float'
             else:
                 assert isinstance(i, (int, long, float)), \
-                        'statement must be an integer or a float'
+                    'statement must be an integer or a float'
         if isinstance(equal, PYSON):
             assert equal.types() == set([bool])
         else:
@@ -319,10 +319,10 @@ class If(PYSON):
             then_types = set([type(then_statement)])
         if isinstance(else_statement, PYSON):
             assert then_types == else_statement.types(), \
-                    'then and else statements must be the same type'
+                'then and else statements must be the same type'
         else:
             assert then_types == set([type(else_statement)]), \
-                    'then and else statements must be the same type'
+                'then and else statements must be the same type'
         self._condition = condition
         self._then_statement = then_statement
         self._else_statement = else_statement
@@ -390,13 +390,13 @@ class In(PYSON):
         super(In, self).__init__()
         if isinstance(key, PYSON):
             assert key.types().issubset(set([str, int, long])), \
-                    'key must be a string or an integer or a long'
+                'key must be a string or an integer or a long'
         else:
             assert type(key) in [str, int, long], \
-                    'key must be a string or an integer or a long'
+                'key must be a string or an integer or a long'
         if isinstance(obj, PYSON):
             assert obj.types().issubset(set([dict, list])), \
-                    'obj must be a dict or a list'
+                'obj must be a dict or a list'
             if obj.types() == set([dict]):
                 assert type(key) == str, 'key must be a string'
         else:
@@ -429,10 +429,10 @@ class Date(PYSON):
         for i in (year, month, day, delta_years, delta_months, delta_days):
             if isinstance(i, PYSON):
                 assert i.types().issubset(set([int, long, type(None)])), \
-                        '%s must be an integer or None' % (i,)
+                    '%s must be an integer or None' % (i,)
             else:
                 assert isinstance(i, (int, long, type(None))), \
-                        '%s must be an integer or None' % (i,)
+                    '%s must be an integer or None' % (i,)
         self._year = year
         self._month = month
         self._day = day
@@ -480,10 +480,10 @@ class DateTime(Date):
                 delta_hours, delta_minutes, delta_seconds, delta_microseconds):
             if isinstance(i, PYSON):
                 assert i.types() == set([int, long, type(None)]), \
-                        '%s must be an integer or None' % (i,)
+                    '%s must be an integer or None' % (i,)
             else:
                 assert isinstance(i, (int, long, type(None))), \
-                        '%s must be an integer or None' % (i,)
+                    '%s must be an integer or None' % (i,)
         self._hour = hour
         self._minute = minute
         self._second = second
diff --git a/setup.py b/setup.py
index 430027a..b63c3bb 100644
--- a/setup.py
+++ b/setup.py
@@ -17,11 +17,10 @@ setup(name='proteus',
     version=proteus.__version__,
     description='Library to access Tryton server as a client',
     long_description=read('README'),
-    author='B2CK',
-    author_email='info at b2ck.com',
+    author='Tryton',
     url='http://www.tryton.org/',
-    download_url="http://downloads.tryton.org/" + \
-            proteus.__version__.rsplit('.', 1)[0] + '/',
+    download_url=("http://downloads.tryton.org/" +
+        proteus.__version__.rsplit('.', 1)[0] + '/'),
     packages=find_packages(),
     classifiers=[
         'Development Status :: 5 - Production/Stable',
@@ -30,12 +29,13 @@ setup(name='proteus',
         'Intended Audience :: Developers',
         'Intended Audience :: Financial and Insurance Industry',
         'Intended Audience :: Legal Industry',
-        'License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)',
+        'License :: OSI Approved :: '
+        'GNU Library or Lesser General Public License (LGPL)',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Topic :: Office/Business',
-    ],
+        ],
     license='LGPL-3',
     install_requires=[
         "python-dateutil",
@@ -45,8 +45,8 @@ setup(name='proteus',
             (major_version, minor_version, major_version, minor_version + 1)],
         'simplejson': ['simplejson'],
         'cdecimal': ['cdecimal'],
-    },
+        },
     test_suite='proteus.tests',
     tests_require=('trytond >= %s.%s, < %s.%s' %
         (major_version, minor_version, major_version, minor_version + 1))
-)
+    )
commit 833584e2294e2da0e5e2a2e0ebaf9c680bf769ae
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Apr 27 18:44:58 2013 +0200

    Releasing debian version 2.6.1-3.

diff --git a/debian/changelog b/debian/changelog
index 677c74a..9477483 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+tryton-proteus (2.6.1-3) experimental; urgency=low
+
+  * Removing Daniel from Uploaders. Thanks for your work! (Closes: #704409).
+  * Adding README.Debian to point out version dependency.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Sat, 27 Apr 2013 15:25:57 +0200
+
 tryton-proteus (2.6.1-2) experimental; urgency=low
 
   * Updating Vcs-Git to correct address.
commit 13eb6ceeefccccf8ffc2923f4c38f5fa44598d61
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Apr 27 12:39:31 2013 +0200

    Adding README.Debian to point out version dependency.

diff --git a/debian/tryton-proteus.README.Debian b/debian/tryton-proteus.README.Debian
new file mode 100644
index 0000000..d173d13
--- /dev/null
+++ b/debian/tryton-proteus.README.Debian
@@ -0,0 +1,7 @@
+tryton-proteus for Debian
+--------------------------
+
+Note: The Tryton client library proteus can only connect to Tryton servers
+with the same major version (e.g. the first two numbers of the version string).
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Sat, 27 Apr 2013 12:00:00 +0200
commit fcd786f226c1ab2e6e210830ef289fadbd55a52a
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Apr 21 23:41:56 2013 +0200

    Removing Daniel from Uploaders. Thanks for your work! (Closes: #704409).

diff --git a/debian/control b/debian/control
index 68bdf6e..889a182 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: tryton-proteus
 Section: python
 Priority: optional
 Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
-Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
+Uploaders: Mathias Behrle <mathiasb at m9s.biz>
 Build-Depends:
  debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
 Standards-Version: 3.9.4
commit b16704a0427f6f09a63565a9268e4391afceeb7d
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Mar 23 15:04:21 2013 +0100

    Releasing debian version 2.6.1-2.

diff --git a/debian/changelog b/debian/changelog
index 63c12f4..677c74a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+tryton-proteus (2.6.1-2) experimental; urgency=low
+
+  * Updating Vcs-Git to correct address.
+  * Adding watch file. Thanks to Bart Martens <bartm at debian.org>.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Sat, 23 Mar 2013 14:01:35 +0100
+
 tryton-proteus (2.6.1-1) experimental; urgency=low
 
   * Removing obsolete Dm-Upload-Allowed
commit 7affb7ec745602c1b50ba559f735ea00e9efc84c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Mar 23 13:52:33 2013 +0100

    Adding watch file. Thanks to Bart Martens <bartm at debian.org>.

diff --git a/debian/watch b/debian/watch
new file mode 100644
index 0000000..a0762c7
--- /dev/null
+++ b/debian/watch
@@ -0,0 +1,2 @@
+version=3
+http://downloads.tryton.org/current/ .*proteus-(\d.*)\.(?:tgz|tbz2|txz|tar\.(?:gz|bz2|xz))
commit efb0d8ec277c4474eb8069d597bfd812c85f8a59
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Feb 23 20:08:13 2013 +0100

    Updating Vcs-Git to correct address.

diff --git a/debian/control b/debian/control
index 0d9d766..68bdf6e 100644
--- a/debian/control
+++ b/debian/control
@@ -8,7 +8,7 @@ Build-Depends:
 Standards-Version: 3.9.4
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
-Vcs-Git: git://debian.tryton.org/git/packages/tryton-proteus.git
+Vcs-Git: git://debian.tryton.org/packages/tryton-proteus.git
 X-Python-Version: >= 2.6
 
 Package: tryton-proteus
commit 02508340455d85a486498da62eaf506c32f19f0f
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Feb 17 13:50:52 2013 +0100

    Releasing debian version 2.6.1-1.

diff --git a/debian/changelog b/debian/changelog
index 77cd84b..63c12f4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+tryton-proteus (2.6.1-1) experimental; urgency=low
+
+  * Removing obsolete Dm-Upload-Allowed
+  * Updating to Standards-Version: 3.9.4, no changes needed.
+  * Merging upstream version 2.6.1.
+  * Updating copyright.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Sat, 16 Feb 2013 21:44:45 +0100
+
 tryton-proteus (2.6.0-1) experimental; urgency=low
 
   * Merging upstream version 2.6.0.
commit 3d1f1a53c09f5c4474330776041788cb0cf5bd62
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Feb 16 21:29:21 2013 +0100

    Updating copyright.

diff --git a/debian/copyright b/debian/copyright
index 92cfa0b..6d5c31e 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,12 +1,12 @@
 Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
 Files: *
-Copyright: 2010-2012 Cedric Krier
+Copyright: 2010-2012 Cédric Krier
            2010-2012 B2CK SPRL
 License: LGPL-3+
 
 Files: debian/*
-Copyright: 2011-2012 Mathias Behrle <mathiasb at m9s.biz>
+Copyright: 2011-2013 Mathias Behrle <mathiasb at m9s.biz>
 License: GPL-3+
 
 License: LGPL-3+
commit 466a1e72411fdcec3b4218493fd600dfa7af1c5b
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri Feb 15 20:51:00 2013 +0100

    Merging upstream version 2.6.1.

diff --git a/CHANGELOG b/CHANGELOG
index 3a1a79d..c9af7ca 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Version 2.6.1 - 2012-11-05
+* Bug fixes (see mercurial logs for details)
+
 Version 2.6.0 - 2012-10-22
 * Bug fixes (see mercurial logs for details)
 
diff --git a/PKG-INFO b/PKG-INFO
index be259fb..d817b42 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
-Metadata-Version: 1.0
+Metadata-Version: 1.1
 Name: proteus
-Version: 2.6.0
+Version: 2.6.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index be259fb..d817b42 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
-Metadata-Version: 1.0
+Metadata-Version: 1.1
 Name: proteus
-Version: 2.6.0
+Version: 2.6.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus/__init__.py b/proteus/__init__.py
index 2484c01..f2ec0cd 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.6.0"
+__version__ = "2.6.1"
 __all__ = ['Model', 'Wizard']
 import sys
 try:
diff --git a/proteus/config.py b/proteus/config.py
index 5ff579f..436ce8e 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -101,7 +101,7 @@ class Config(object):
         ctx_manager = ContextManager(self)
 
         if context is None:
-            context = None
+            context = {}
         self._context = self.context
         self._context.update(context)
         self._context.update(kwargs)
commit a83491280cf6503afadadddb8fb96b994d21376a
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri Feb 15 19:28:39 2013 +0100

    Updating to Standards-Version: 3.9.4, no changes needed.

diff --git a/debian/control b/debian/control
index 4e1d462..0d9d766 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@ Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Build-Depends:
  debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
-Standards-Version: 3.9.3
+Standards-Version: 3.9.4
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
 Vcs-Git: git://debian.tryton.org/git/packages/tryton-proteus.git
commit 6496d3393e6036befdb41c13de1a17660e1ec28b
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed Feb 13 21:37:13 2013 +0100

    Removing obsolete Dm-Upload-Allowed

diff --git a/debian/control b/debian/control
index a598f94..4e1d462 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,6 @@ Section: python
 Priority: optional
 Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
-Dm-Upload-Allowed: yes
 Build-Depends:
  debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
 Standards-Version: 3.9.3
commit cf216ed9be8e7602f1a872dffa1c38ca3e5b79a5
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed Oct 24 22:02:19 2012 +0200

    Releasing debian version 2.6.0-1.

diff --git a/debian/changelog b/debian/changelog
index 6969aa3..77cd84b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+tryton-proteus (2.6.0-1) experimental; urgency=low
+
+  * Merging upstream version 2.6.0.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Wed, 24 Oct 2012 14:25:26 +0200
+
 tryton-proteus (2.4.1-2) experimental; urgency=low
 
   [ Daniel Baumann ]
commit def0854e6f34a88ec00198ec27c90ddb24e35dcc
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Oct 23 19:54:05 2012 +0200

    Merging upstream version 2.6.0.

diff --git a/CHANGELOG b/CHANGELOG
index db02c9c..3a1a79d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,4 @@
-Version 2.4.1 - 2012-09-10
+Version 2.6.0 - 2012-10-22
 * Bug fixes (see mercurial logs for details)
 
 Version 2.4.0 - 2012-04-23
diff --git a/PKG-INFO b/PKG-INFO
index 2f44fe4..be259fb 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.4.1
+Version: 2.6.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.4/
+Download-URL: http://downloads.tryton.org/2.6/
 Description: proteus
         =======
         
@@ -84,9 +84,7 @@ Description: proteus
         Addresses are store on party with a `One2Many` field. So the new address just
         needs to be appended to the list `addresses`.
         
-            >>> Address = Model.get('party.address')
-            >>> address = Address()
-            >>> party.addresses.append(address)
+            >>> address = party.addresses.new()
             >>> party.save()
             >>> party.addresses #doctest: +ELLIPSIS
             [proteus.Model.get('party.address')(...)]
@@ -139,6 +137,7 @@ Description: proteus
 Platform: UNKNOWN
 Classifier: Development Status :: 5 - Production/Stable
 Classifier: Environment :: Plugins
+Classifier: Framework :: Tryton
 Classifier: Intended Audience :: Developers
 Classifier: Intended Audience :: Financial and Insurance Industry
 Classifier: Intended Audience :: Legal Industry
diff --git a/README b/README
index 390ee65..aa9f9a7 100644
--- a/README
+++ b/README
@@ -75,9 +75,7 @@ Creating an address for the party
 Addresses are store on party with a `One2Many` field. So the new address just
 needs to be appended to the list `addresses`.
 
-    >>> Address = Model.get('party.address')
-    >>> address = Address()
-    >>> party.addresses.append(address)
+    >>> address = party.addresses.new()
     >>> party.save()
     >>> party.addresses #doctest: +ELLIPSIS
     [proteus.Model.get('party.address')(...)]
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 2f44fe4..be259fb 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.4.1
+Version: 2.6.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.4/
+Download-URL: http://downloads.tryton.org/2.6/
 Description: proteus
         =======
         
@@ -84,9 +84,7 @@ Description: proteus
         Addresses are store on party with a `One2Many` field. So the new address just
         needs to be appended to the list `addresses`.
         
-            >>> Address = Model.get('party.address')
-            >>> address = Address()
-            >>> party.addresses.append(address)
+            >>> address = party.addresses.new()
             >>> party.save()
             >>> party.addresses #doctest: +ELLIPSIS
             [proteus.Model.get('party.address')(...)]
@@ -139,6 +137,7 @@ Description: proteus
 Platform: UNKNOWN
 Classifier: Development Status :: 5 - Production/Stable
 Classifier: Environment :: Plugins
+Classifier: Framework :: Tryton
 Classifier: Intended Audience :: Developers
 Classifier: Intended Audience :: Financial and Insurance Industry
 Classifier: Intended Audience :: Legal Industry
diff --git a/proteus.egg-info/SOURCES.txt b/proteus.egg-info/SOURCES.txt
index c415452..9ca43b4 100644
--- a/proteus.egg-info/SOURCES.txt
+++ b/proteus.egg-info/SOURCES.txt
@@ -15,5 +15,6 @@ proteus.egg-info/requires.txt
 proteus.egg-info/top_level.txt
 proteus/tests/__init__.py
 proteus/tests/test_config.py
+proteus/tests/test_context.py
 proteus/tests/test_model.py
 proteus/tests/test_wizard.py
\ No newline at end of file
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index f0b6a22..4c333d6 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -4,7 +4,7 @@ python-dateutil
 cdecimal
 
 [trytond]
-trytond >= 2.4, < 2.5
+trytond >= 2.6, < 2.7
 
 [simplejson]
 simplejson
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index cdaf8c6..2484c01 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.4.1"
+__version__ = "2.6.0"
 __all__ = ['Model', 'Wizard']
 import sys
 try:
@@ -100,6 +100,12 @@ class CharDescriptor(FieldDescriptor):
         assert isinstance(value, basestring) or value in (None, False)
         super(CharDescriptor, self).__set__(instance, value or '')
 
+    def __get__(self, instance, owner):
+        value = super(CharDescriptor, self).__get__(instance, owner)
+        if value is False:
+            value = None
+        return value
+
 
 class BinaryDescriptor(FieldDescriptor):
     default = None
@@ -208,12 +214,17 @@ class One2ManyDescriptor(FieldDescriptor):
     default = []
 
     def __get__(self, instance, owner):
+        from .pyson import PYSONDecoder
         relation = Model.get(self.definition['relation'], instance._config)
         value = super(One2ManyDescriptor, self).__get__(instance, owner)
         if not isinstance(value, ModelList):
-            value = ModelList((relation(id)
-                for id in value or []), instance, self.name,
-                self.definition.get('relation_field'))
+            ctx = instance._context.copy() if instance._context else {}
+            if self.definition.get('context'):
+                decoder = PYSONDecoder(_EvalEnvironment(instance))
+                ctx.update(decoder.decode(self.definition.get('context')))
+            with instance._config.set_context(ctx):
+                value = ModelList(self.definition, (relation(id)
+                        for id in value or []), instance, self.name)
             instance._values[self.name] = value
         return value
 
@@ -240,13 +251,13 @@ class ReferenceValueDescriptor(ValueDescriptor):
         value = super(ReferenceValueDescriptor, self).__get__(instance, owner)
         if isinstance(value, Model):
             value = '%s,%s' % (value.__class__.__name__, value.id)
-        return value or False
+        return value or None
 
 
 class Many2OneValueDescriptor(ValueDescriptor):
     def __get__(self, instance, owner):
         value = super(Many2OneValueDescriptor, self).__get__(instance, owner)
-        return value and value.id or False
+        return value and value.id or None
 
 
 class One2OneValueDescriptor(Many2OneValueDescriptor):
@@ -260,7 +271,7 @@ class One2ManyValueDescriptor(ValueDescriptor):
         for record in value_list:
             if record.id > 0:
                 if record._changed:
-                    value.append(('write', record.id, record._get_values(
+                    value.append(('write', [record.id], record._get_values(
                         fields=record._changed)))
                 value[0][1].append(record.id)
             else:
@@ -291,7 +302,7 @@ class ReferenceEvalDescriptor(EvalDescriptor):
         value = super(ReferenceEvalDescriptor, self).__get__(instance, owner)
         if isinstance(value, Model):
             value = '%s,%s' % (value.__class__.__name__, value.id)
-        return value or False
+        return value or None
 
 
 class Many2OneEvalDescriptor(EvalDescriptor):
@@ -299,7 +310,7 @@ class Many2OneEvalDescriptor(EvalDescriptor):
         value = super(Many2OneEvalDescriptor, self).__get__(instance, owner)
         if value:
             return value.id
-        return False
+        return None
 
 
 class One2OneEvalDescriptor(Many2OneEvalDescriptor):
@@ -398,22 +409,26 @@ class MetaModelFactory(object):
 class ModelList(list):
     'List for Model'
 
-    def __init__(self, sequence=None, parent=None, parent_field_name='',
-            parent_name=''):
+    def __init__(self, definition, sequence=None, parent=None,
+            parent_field_name=''):
+        self.model_name = definition['relation']
         if sequence is None:
             sequence = []
         self.parent = parent
         if parent:
             assert parent_field_name
         self.parent_field_name = parent_field_name
-        self.parent_name = parent_name
+        self.parent_name = definition.get('relation_field', '')
+        self.domain = definition.get('domain', [])
+        self.context = definition.get('context')
+        self.add_remove = definition.get('add_remove')
         self.record_removed = set()
         self.record_deleted = set()
         result = super(ModelList, self).__init__(sequence)
         for record in self:
             record._parent = parent
             record._parent_field_name = parent_field_name
-            record._parent_name = parent_name
+            record._parent_name = self.parent_name
         return result
     __init__.__doc__ = list.__init__.__doc__
 
@@ -423,6 +438,13 @@ class ModelList(list):
             self.parent._changed.add(self.parent_field_name)
             self.parent._on_change(self.parent_field_name)
 
+    def _get_context(self):
+        from .pyson import PYSONDecoder
+        decoder = PYSONDecoder(_EvalEnvironment(self.parent))
+        ctx = self.parent._context.copy() if self.parent._context else {}
+        ctx.update(decoder.decode(self.context) if self.context else {})
+        return ctx
+
     def append(self, record):
         assert isinstance(record, Model)
         if self.parent:
@@ -497,6 +519,28 @@ class ModelList(list):
         raise NotImplementedError
     sort.__doc__ = list.sort.__doc__
 
+    def new(self):
+        'Adds a new record to the ModelList and returns it'
+        Relation = Model.get(self.model_name, self.parent._config)
+        with Relation._config.set_context(self._get_context()):
+            new_record = Relation()
+        self.append(new_record)
+        return new_record
+
+    def find(self, condition=None, offset=0, limit=None, order=None):
+        'Returns records matching condition taking into account list domain'
+        from .pyson import PYSONDecoder
+        decoder = PYSONDecoder(_EvalEnvironment(self.parent))
+        Relation = Model.get(self.model_name, self.parent._config)
+        if condition is None:
+            condition = []
+        field_domain = decoder.decode(self.domain)
+        add_remove_domain = (decoder.decode(self.add_remove)
+            if self.add_remove else [])
+        new_domain = [field_domain, add_remove_domain, condition]
+        with Relation._config.set_context(self._get_context()):
+            return Relation.find(new_domain, offset, limit, order)
+
 
 class Model(object):
     'Model class for Tryton records'
@@ -518,6 +562,7 @@ class Model(object):
         self._parent = None  # store the parent record
         self._parent_field_name = ''  # store the field name in parent record
         self._parent_name = ''  # store the field name to parent record
+        self._context = self._config.context  # store the context
         if self.id < 0 and _default:
             self._default_get()
 
@@ -607,7 +652,7 @@ class Model(object):
                 return
             values = self._get_values(fields=self._changed)
             context['_timestamp'] = self._get_timestamp()
-            self._proxy.write(self.id, values, context)
+            self._proxy.write([self.id], values, context)
         self.reload()
 
     def delete(self):
@@ -615,7 +660,7 @@ class Model(object):
         if self.id > 0:
             context = self._config.context
             context['_timestamp'] = self._get_timestamp()
-            return self._proxy.delete(self.id, context)
+            return self._proxy.delete([self.id], context)
         self.reload()
         return True
 
@@ -654,8 +699,8 @@ class Model(object):
                     if y['loading'] == 'eager']
         if not self._fields:
             fields.append('_timestamp')
-        self._values.update(self._proxy.read(self.id, fields,
-            self._config.context))
+        self._values.update(self._proxy.read([self.id], fields,
+            self._config.context)[0])
         for field in fields:
             if (field in self._fields
                     and self._fields[field]['type'] == 'float'
@@ -684,8 +729,8 @@ class Model(object):
                     record = relation()
                     record._default_set(vals)
                     records.append(record)
-                self._values[field] = ModelList(records, self, field,
-                        definition.get('relation_field', ''))
+                self._values[field] = ModelList(definition, records, self,
+                    field)
             else:
                 self._values[field] = value
 
@@ -697,10 +742,10 @@ class Model(object):
 
     def _get_on_change_value(self):
         values = self._get_eval()
-        del values['id']
         for field, definition in self._fields.iteritems():
-            if definition['type'] in ('one2many', 'many2many'):
-                values[field] = [x._get_eval() for x in getattr(self, field)]
+            if definition['type'] == 'one2many':
+                values[field] = [x._get_on_change_value()
+                    for x in getattr(self, field)]
         return values
 
     def _on_change_args(self, args):
@@ -795,8 +840,8 @@ class Model(object):
             values.update(self._on_change_args(definition['on_change_with']))
         if to_change:
             context = self._config.context
-            result = getattr(self._proxy, 'on_change_with')(list(to_change),
-                values, context)
+            result = getattr(self._proxy, 'on_change_with')(values,
+                list(to_change), context)
             for field, value in result.items():
                 self._on_change_set(field, value)
         for field in later:
@@ -847,7 +892,11 @@ class Wizard(object):
                 ctx['active_model'] = None
 
             if self.form:
-                data = {self.form_state: self.form._get_on_change_value()}
+                # Filter only modified values
+                data = {self.form_state:
+                    dict((k, v) for k, v in
+                        self.form._get_on_change_value().iteritems()
+                        if k in self.form._values)}
             else:
                 data = {}
 
diff --git a/proteus/config.py b/proteus/config.py
index ef02ba2..5ff579f 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -72,6 +72,20 @@ _CONFIG = threading.local()
 _CONFIG.current = None
 
 
+class ContextManager(object):
+    'Context Manager for the tryton context'
+
+    def __init__(self, config):
+        self.config = config
+        self.context = config.context
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.config._context = self.context
+
+
 class Config(object):
     'Config interface'
 
@@ -83,6 +97,16 @@ class Config(object):
     def context(self):
         return self._context.copy()
 
+    def set_context(self, context=None, **kwargs):
+        ctx_manager = ContextManager(self)
+
+        if context is None:
+            context = None
+        self._context = self.context
+        self._context.update(context)
+        self._context.update(kwargs)
+        return ctx_manager
+
     def get_proxy(self, name):
         raise NotImplementedError
 
@@ -101,28 +125,35 @@ class _TrytondMethod(object):
     def __call__(self, *args):
         from trytond.cache import Cache
         from trytond.transaction import Transaction
+        from trytond.rpc import RPC
 
-        if self._name in self._object._rpc:
-            readonly = not self._object._rpc[self._name]
+        if self._name in self._object.__rpc__:
+            rpc = self._object.__rpc__[self._name]
         elif self._name in getattr(self._object, '_buttons', {}):
-            readonly = False
+            rpc = RPC(readonly=False, instantiate=0)
         else:
             raise TypeError('%s is not callable' % self._name)
 
         with Transaction().start(self._config.database_name,
-                self._config.user, readonly=readonly) as transaction:
+                self._config.user, readonly=rpc.readonly) as transaction:
             Cache.clean(self._config.database_name)
-            args = list(args)
-            context = args.pop()
-            if '_timestamp' in context:
-                transaction.timestamp = context['_timestamp']
-                del context['_timestamp']
-            transaction.context = context
-            res = getattr(self._object, self._name)(*args)
-            if not readonly:
+            args, kwargs, transaction.context, transaction.timestamp = \
+                rpc.convert(self._object, *args)
+            meth = getattr(self._object, self._name)
+            if not hasattr(meth, 'im_self') or meth.im_self:
+                result = rpc.result(meth(*args, **kwargs))
+            else:
+                assert rpc.instantiate == 0
+                inst = args.pop(0)
+                if hasattr(inst, self._name):
+                    result = rpc.result(meth(inst, *args, **kwargs))
+                else:
+                    result = [rpc.result(meth(i, *args, **kwargs))
+                        for i in inst]
+            if not rpc.readonly:
                 transaction.cursor.commit()
         Cache.resets(self._config.database_name)
-        return res
+        return result
 
 
 class TrytondProxy(object):
@@ -149,7 +180,6 @@ class TrytondConfig(Config):
         CONFIG.update_etc(config_file)
         if database_type is not None:
             CONFIG['db_type'] = database_type
-        from trytond.modules import register_classes
         from trytond.pool import Pool
         from trytond.backend import Database
         from trytond.protocols.dispatcher import create
@@ -165,7 +195,7 @@ class TrytondConfig(Config):
         self._user = user
         self.config_file = config_file
 
-        register_classes()
+        Pool.start()
 
         database = Database().connect()
         cursor = database.cursor()
@@ -183,13 +213,13 @@ class TrytondConfig(Config):
 
         with Transaction().start(self.database_name, 0) as transaction:
             Cache.clean(database_name)
-            user_obj = self.pool.get('res.user')
+            User = self.pool.get('res.user')
             transaction.context = self.context
-            self.user = user_obj.search([
+            self.user = User.search([
                 ('login', '=', user),
-                ], limit=1)[0]
+                ], limit=1)[0].id
             with transaction.set_user(self.user):
-                self._context = user_obj.get_preferences(context_only=True)
+                self._context = User.get_preferences(context_only=True)
         Cache.resets(database_name)
     __init__.__doc__ = object.__init__.__doc__
 
@@ -219,7 +249,7 @@ class TrytondConfig(Config):
     def get_proxy_methods(self, name, type='model'):
         'Return list of methods'
         proxy = self.get_proxy(name, type=type)
-        methods = [x for x in proxy._object._rpc]
+        methods = [x for x in proxy._object.__rpc__]
         if hasattr(proxy._object, '_buttons'):
             methods += [x for x in proxy._object._buttons]
         return methods
diff --git a/proteus/tests/test_context.py b/proteus/tests/test_context.py
new file mode 100644
index 0000000..dc7faea
--- /dev/null
+++ b/proteus/tests/test_context.py
@@ -0,0 +1,21 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of this
+# repository contains the full copyright notices and license terms.
+
+from unittest import TestCase
+from proteus import config
+
+
+class TestContext(TestCase):
+
+    def setUp(self):
+        self.config = config.set_trytond(database_type='sqlite')
+
+    def test_config(self):
+        prev_ctx = self.config._context
+
+        with self.config.set_context({'a': 1}):
+            self.assertEqual(self.config.context['a'], 1)
+            for key, value in prev_ctx.items():
+                self.assertEqual(self.config.context[key], value)
+
+        self.assertEqual(self.config.context, prev_ctx)
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
index db6243c..f4b90d7 100644
--- a/proteus/tests/test_model.py
+++ b/proteus/tests/test_model.py
@@ -276,7 +276,7 @@ class TestModel(TestCase):
         test.name = 'Test delete'
         test.login = 'test delete'
         test.save()
-        self.assert_(test.delete())
+        test.delete()
 
     def test_on_change(self):
         Trigger = Model.get('ir.trigger')
diff --git a/setup.py b/setup.py
index 1799c38..430027a 100644
--- a/setup.py
+++ b/setup.py
@@ -26,6 +26,7 @@ setup(name='proteus',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Environment :: Plugins',
+        'Framework :: Tryton',
         'Intended Audience :: Developers',
         'Intended Audience :: Financial and Insurance Industry',
         'Intended Audience :: Legal Industry',
commit 9652c660fb8a6b01af28da3a37e7b18b7105142c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Sep 18 16:07:27 2012 +0200

    Releasing debian version 2.4.1-2.

diff --git a/debian/changelog b/debian/changelog
index 996b012..6969aa3 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,18 @@
+tryton-proteus (2.4.1-2) experimental; urgency=low
+
+  [ Daniel Baumann ]
+  * Updating maintainers field.
+  * Updating vcs fields.
+  * Switching to xz compression.
+  * Updating to debhelper version 9.
+  * Correcting copyright file to match format version 1.0.
+
+  [ Mathias Behrle ]
+  * Adding python-dateutil to Build-Depends and Depends.
+  * Merging branch debian-wheezy-2.2 (Closes: #687745).
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Mon, 17 Sep 2012 12:31:15 +0200
+
 tryton-proteus (2.4.1-1) experimental; urgency=low
 
   * Merging upstream version 2.4.1.
commit 2106386cb6518ee0323e4d7861bab52946b46a9a
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Sep 17 12:30:39 2012 +0200

    Adding python-dateutil to Build-Depends and Depends.

diff --git a/debian/control b/debian/control
index a27c09d..a598f94 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,8 @@ Priority: optional
 Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
-Build-Depends: debhelper (>= 9), python (>= 2.6.6-3~), python-setuptools
+Build-Depends:
+ debhelper (>= 9), python (>= 2.6.6-3~), python-dateutil, python-setuptools
 Standards-Version: 3.9.3
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
@@ -14,8 +15,8 @@ X-Python-Version: >= 2.6
 Package: tryton-proteus
 Architecture: all
 Depends:
- ${misc:Depends}, ${python:Depends}, python-dateutil, python-pkg-resources
-Recommends: python-simplejson
+ ${misc:Depends}, ${python:Depends}, python-dateutil, python-simplejson,
+ python-pkg-resources
 Suggests: tryton-server
 Description: Tryton Application Platform (Proteus)
  Tryton is a high-level general purpose application platform written in Python
commit ec7edc99697855d5405ea6fbbf9cabb3e1cfe61e
Author: Daniel Baumann <daniel at 127011.net>
Date:   Sat Jun 30 17:09:54 2012 +0200

    Correcting copyright file to match format version 1.0.

diff --git a/debian/copyright b/debian/copyright
index 3ba7c9a..92cfa0b 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,13 +1,12 @@
 Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
 Files: *
-Copyright:
- (C) 2010-2012 Cedric Krier
- (C) 2010-2012 B2CK SPRL
+Copyright: 2010-2012 Cedric Krier
+           2010-2012 B2CK SPRL
 License: LGPL-3+
 
 Files: debian/*
-Copyright: (C) 2011-2012 Mathias Behrle <mathiasb at m9s.biz>
+Copyright: 2011-2012 Mathias Behrle <mathiasb at m9s.biz>
 License: GPL-3+
 
 License: LGPL-3+
commit d290ab0289c88105b86d23873385dcc0520fe965
Author: Daniel Baumann <daniel at 127011.net>
Date:   Sat Jun 30 17:09:54 2012 +0200

    Updating to debhelper version 9.

diff --git a/debian/compat b/debian/compat
index 45a4fb7..ec63514 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-8
+9
diff --git a/debian/control b/debian/control
index 99aebbc..a27c09d 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@ Priority: optional
 Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
-Build-Depends: debhelper (>= 8), python (>= 2.6.6-3~), python-setuptools
+Build-Depends: debhelper (>= 9), python (>= 2.6.6-3~), python-setuptools
 Standards-Version: 3.9.3
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
commit 11b332b3e74a7cbafcecca5e14c9f308f6d39717
Author: Daniel Baumann <daniel at 127011.net>
Date:   Sat Jun 30 17:09:54 2012 +0200

    Switching to xz compression.

diff --git a/debian/rules b/debian/rules
index e32b791..1ae0776 100755
--- a/debian/rules
+++ b/debian/rules
@@ -7,3 +7,6 @@ override_dh_auto_clean:
 	dh_auto_clean
 
 	rm -rf *.egg-info
+
+override_dh_builddeb:
+	dh_builddeb -- -Zxz -z9
diff --git a/debian/source/options b/debian/source/options
index d053b65..22a4de9 100644
--- a/debian/source/options
+++ b/debian/source/options
@@ -1,2 +1,2 @@
-compression = gzip
+compression = xz
 compression-level = 9
commit d0537def5fe16456ea303e73e3819f0ab52dd4bf
Author: Daniel Baumann <daniel at 127011.net>
Date:   Sat Jun 30 16:55:07 2012 +0200

    Updating vcs fields.

diff --git a/debian/control b/debian/control
index b91eeac..99aebbc 100644
--- a/debian/control
+++ b/debian/control
@@ -7,8 +7,8 @@ Dm-Upload-Allowed: yes
 Build-Depends: debhelper (>= 8), python (>= 2.6.6-3~), python-setuptools
 Standards-Version: 3.9.3
 Homepage: http://www.tryton.org/
-Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
-Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
+Vcs-Browser: http://debian.tryton.org/gitweb/?p=packages/tryton-proteus.git
+Vcs-Git: git://debian.tryton.org/git/packages/tryton-proteus.git
 X-Python-Version: >= 2.6
 
 Package: tryton-proteus
commit 2c0a84707fda5f3cf56557fc197bb9c5df1d4451
Author: Daniel Baumann <daniel at 127011.net>
Date:   Sat Jun 30 16:47:48 2012 +0200

    Updating maintainers field.

diff --git a/debian/control b/debian/control
index 535a45a..b91eeac 100644
--- a/debian/control
+++ b/debian/control
@@ -1,7 +1,7 @@
 Source: tryton-proteus
 Section: python
 Priority: optional
-Maintainer: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
+Maintainer: Debian Tryton Maintainers <maintainers at debian.tryton.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
 Build-Depends: debhelper (>= 8), python (>= 2.6.6-3~), python-setuptools
commit 632bc8b366c3a51c1ac70c2e52208109a17d59f7
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Sep 11 14:27:45 2012 +0200

    Releasing debian version 2.4.1-1.

diff --git a/debian/changelog b/debian/changelog
index 3ed4224..996b012 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+tryton-proteus (2.4.1-1) experimental; urgency=low
+
+  * Merging upstream version 2.4.1.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Tue, 11 Sep 2012 13:20:01 +0200
+
 tryton-proteus (2.4.0-1) experimental; urgency=low
 
   * Updating to Standards-Version: 3.9.3, no changes needed.
commit c065301b977e738ab3cf623d7953b6fe7f41c217
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Sep 11 13:16:53 2012 +0200

    Merging upstream version 2.4.1.

diff --git a/CHANGELOG b/CHANGELOG
index c628e1f..db02c9c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Version 2.4.1 - 2012-09-10
+* Bug fixes (see mercurial logs for details)
+
 Version 2.4.0 - 2012-04-23
 * Bug fixes (see mercurial logs for details)
 * Use loading attribute
diff --git a/PKG-INFO b/PKG-INFO
index 129be62..2f44fe4 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.4.0
+Version: 2.4.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
@@ -40,8 +40,8 @@ Description: proteus
         
             >>> Module = Model.get('ir.module.module')
             >>> (party,) = Module.find([('name', '=', 'party')])
-            >>> Module.button_install([party.id], config.context)
-            >>> Wizard('ir.module.module.install_upgrade').execute('start')
+            >>> Module.install([party.id], config.context)
+            >>> Wizard('ir.module.module.install_upgrade').execute('upgrade')
         
         Creating a party
         ~~~~~~~~~~~~~~~~
diff --git a/README b/README
index 7e0a957..390ee65 100644
--- a/README
+++ b/README
@@ -31,8 +31,8 @@ Find the module, call the install button and run the install wizard.
 
     >>> Module = Model.get('ir.module.module')
     >>> (party,) = Module.find([('name', '=', 'party')])
-    >>> Module.button_install([party.id], config.context)
-    >>> Wizard('ir.module.module.install_upgrade').execute('start')
+    >>> Module.install([party.id], config.context)
+    >>> Wizard('ir.module.module.install_upgrade').execute('upgrade')
 
 Creating a party
 ~~~~~~~~~~~~~~~~
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 129be62..2f44fe4 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.4.0
+Version: 2.4.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
@@ -40,8 +40,8 @@ Description: proteus
         
             >>> Module = Model.get('ir.module.module')
             >>> (party,) = Module.find([('name', '=', 'party')])
-            >>> Module.button_install([party.id], config.context)
-            >>> Wizard('ir.module.module.install_upgrade').execute('start')
+            >>> Module.install([party.id], config.context)
+            >>> Wizard('ir.module.module.install_upgrade').execute('upgrade')
         
         Creating a party
         ~~~~~~~~~~~~~~~~
diff --git a/proteus/__init__.py b/proteus/__init__.py
index 4c944aa..cdaf8c6 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 __all__ = ['Model', 'Wizard']
 import sys
 try:
@@ -20,7 +20,6 @@ from decimal import Decimal
 from types import NoneType
 
 import proteus.config
-from proteus.pyson import PYSONDecoder
 
 _MODELS = threading.local()
 
@@ -189,7 +188,8 @@ class Many2OneDescriptor(FieldDescriptor):
             value = relation(value)
         elif not value:
             value = None
-        instance._values[self.name] = value
+        if self.name in instance._values:
+            instance._values[self.name] = value
         return value
 
     def __set__(self, instance, value):
@@ -600,7 +600,7 @@ class Model(object):
         'Save the record'
         context = self._config.context
         if self.id < 0:
-            values = self._get_values(fields=self._changed)
+            values = self._get_values()
             self.__id = self._proxy.create(values, context)
         else:
             if not self._changed:
@@ -759,6 +759,8 @@ class Model(object):
 
     def _on_change(self, name):
         'Call on_change for field'
+        # Import locally to not break installation
+        from proteus.pyson import PYSONDecoder
         definition = self._fields[name]
         if definition.get('on_change'):
             if isinstance(definition['on_change'], basestring):
commit 6a782fa4e59d5c0dcb10457389894a54792d4c24
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Apr 28 12:44:19 2012 +0200

    Releasing debian version 2.4.0-1.

diff --git a/debian/changelog b/debian/changelog
index 115f2d0..3ed4224 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,14 @@
+tryton-proteus (2.4.0-1) experimental; urgency=low
+
+  * Updating to Standards-Version: 3.9.3, no changes needed.
+  * Updating year in copyright.
+  * Adding Format header for DEP5.
+  * Merging upstream version 2.4.0.
+  * Updating Copyright.
+  * Updating Depends and Recommends.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Thu, 26 Apr 2012 19:33:55 +0200
+
 tryton-proteus (2.2.1-1) unstable; urgency=low
 
   * Merging upstream version 2.2.1.
commit ff3b621c8a18b8b03259c4f28dd81671e07f5b34
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed Apr 25 20:34:56 2012 +0200

    Updating Depends and Recommends.

diff --git a/debian/control b/debian/control
index 5caba0a..535a45a 100644
--- a/debian/control
+++ b/debian/control
@@ -14,7 +14,8 @@ X-Python-Version: >= 2.6
 Package: tryton-proteus
 Architecture: all
 Depends:
- ${misc:Depends}, ${python:Depends}, python-simplejson, python-pkg-resources
+ ${misc:Depends}, ${python:Depends}, python-dateutil, python-pkg-resources
+Recommends: python-simplejson
 Suggests: tryton-server
 Description: Tryton Application Platform (Proteus)
  Tryton is a high-level general purpose application platform written in Python
commit 14c11349651942cf783174e996eb83d8aaabf8b1
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed Apr 25 20:08:13 2012 +0200

    Updating Copyright.

diff --git a/debian/copyright b/debian/copyright
index 5b70b16..3ba7c9a 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -2,8 +2,8 @@ Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
 Files: *
 Copyright:
- (C) 2010-2011 Cedric Krier
- (C) 2010-2011 B2CK SPRL
+ (C) 2010-2012 Cedric Krier
+ (C) 2010-2012 B2CK SPRL
 License: LGPL-3+
 
 Files: debian/*
commit 5e73938db9fdfa39d2e1d2171c0de7e907edda58
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Apr 24 19:31:17 2012 +0200

    Merging upstream version 2.4.0.

diff --git a/CHANGELOG b/CHANGELOG
index ff71820..c628e1f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,8 @@
-Version 2.2.1 - 2011-12-26
+Version 2.4.0 - 2012-04-23
 * Bug fixes (see mercurial logs for details)
+* Use loading attribute
+* Add support of _buttons
+* Add support of fields.Time
 
 Version 2.2.0 - 2011-10-25
 * Bug fixes (see mercurial logs for details)
diff --git a/COPYRIGHT b/COPYRIGHT
index de261a6..e792a2c 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,5 +1,5 @@
-Copyright (C) 2010-2011 Cédric Krier.
-Copyright (C) 2010-2011 B2CK SPRL.
+Copyright (C) 2010-2012 Cédric Krier.
+Copyright (C) 2010-2012 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/INSTALL b/INSTALL
index 4267630..9858055 100644
--- a/INSTALL
+++ b/INSTALL
@@ -6,6 +6,7 @@ Prerequisites
 
  * Python 2.6 or later (http://www.python.org/)
  * trytond (http://www.tryton.org/)
+ * Optional: cdecimal (http://www.bytereef.org/mpdecimal/index.html)
 
 Installation
 ------------
diff --git a/PKG-INFO b/PKG-INFO
index 5737c16..129be62 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
-Metadata-Version: 1.1
+Metadata-Version: 1.0
 Name: proteus
-Version: 2.2.1
+Version: 2.4.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.2/
+Download-URL: http://downloads.tryton.org/2.4/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 5737c16..129be62 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
-Metadata-Version: 1.1
+Metadata-Version: 1.0
 Name: proteus
-Version: 2.2.1
+Version: 2.4.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: LGPL-3
-Download-URL: http://downloads.tryton.org/2.2/
+Download-URL: http://downloads.tryton.org/2.4/
 Description: proteus
         =======
         
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index 747ad85..f0b6a22 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -1,4 +1,10 @@
+python-dateutil
 
+[cdecimal]
+cdecimal
 
 [trytond]
-trytond >= 2.2, < 2.3
\ No newline at end of file
+trytond >= 2.4, < 2.5
+
+[simplejson]
+simplejson
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index f07cd72..4c944aa 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,17 +3,28 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.2.1"
+__version__ = "2.4.0"
 __all__ = ['Model', 'Wizard']
-from types import NoneType
+import sys
+try:
+    import cdecimal
+    # Use cdecimal globally
+    if 'decimal' not in sys.modules:
+        sys.modules['decimal'] = cdecimal
+except ImportError:
+    import decimal
+    sys.modules['cdecimal'] = decimal
 import threading
 import datetime
 from decimal import Decimal
+from types import NoneType
+
 import proteus.config
 from proteus.pyson import PYSONDecoder
 
 _MODELS = threading.local()
 
+
 class _EvalEnvironment(dict):
     'Dictionary for evaluation'
     def __init__(self, parent):
@@ -58,12 +69,12 @@ class FieldDescriptor(object):
         self.__doc__ = definition['string']
 
     def __get__(self, instance, owner):
-        if instance.id > 0 and self.name not in instance._values:
+        if instance.id > 0:
             instance._read(self.name)
         return instance._values.get(self.name, self.default)
 
     def __set__(self, instance, value):
-        if instance.id > 0 and self.name not in instance._values:
+        if instance.id > 0:
             instance._read(self.name)
         previous = getattr(instance, self.name)
         instance._values[self.name] = value
@@ -95,30 +106,31 @@ class BinaryDescriptor(FieldDescriptor):
     default = None
 
     def __set__(self, instance, value):
-        assert isinstance(value, (basestring, buffer)) or value in (None, False)
+        assert (isinstance(value, (basestring, buffer))
+            or value in (None, False))
         super(BinaryDescriptor, self).__set__(instance, value or '')
 
 
 class IntegerDescriptor(FieldDescriptor):
-    default = 0
 
     def __set__(self, instance, value):
-        assert isinstance(value, (int, long))
+        assert isinstance(value, (int, long, NoneType))
         super(IntegerDescriptor, self).__set__(instance, value)
 
 
 class FloatDescriptor(FieldDescriptor):
-    default = 0.0
 
     def __set__(self, instance, value):
-        super(FloatDescriptor, self).__set__(instance, float(value))
+        assert isinstance(value, (int, long, float, Decimal, NoneType))
+        if value is not None:
+            value = float(value)
+        super(FloatDescriptor, self).__set__(instance, value)
 
 
 class NumericDescriptor(FieldDescriptor):
-    default = Decimal('0.0')
 
     def __set__(self, instance, value):
-        assert isinstance(value, Decimal)
+        assert isinstance(value, (NoneType, Decimal))
         # TODO add digits validation
         super(NumericDescriptor, self).__set__(instance, value)
 
@@ -163,6 +175,12 @@ class DateTimeDescriptor(FieldDescriptor):
         super(DateTimeDescriptor, self).__set__(instance, value)
 
 
+class TimeDescriptor(FieldDescriptor):
+    def __set__(self, instance, value):
+        assert isinstance(value, datetime.time) or value in (None, False)
+        super(TimeDescriptor, self).__set__(instance, value)
+
+
 class Many2OneDescriptor(FieldDescriptor):
     def __get__(self, instance, owner):
         relation = Model.get(self.definition['relation'], instance._config)
@@ -304,7 +322,7 @@ class MetaModelFactory(object):
         'text': CharDescriptor,
         'sha': CharDescriptor,
         'binary': BinaryDescriptor,
-        'selection': CharDescriptor, # TODO implement its own descriptor
+        'selection': CharDescriptor,  # TODO implement its own descriptor
         'integer': IntegerDescriptor,
         'biginteger': IntegerDescriptor,
         'float': FloatDescriptor,
@@ -313,6 +331,7 @@ class MetaModelFactory(object):
         'reference': ReferenceDescriptor,
         'date': DateDescriptor,
         'datetime': DateTimeDescriptor,
+        'time': TimeDescriptor,
         'many2one': Many2OneDescriptor,
         'one2many': One2ManyDescriptor,
         'many2many': Many2ManyDescriptor,
@@ -342,6 +361,7 @@ class MetaModelFactory(object):
         models_key = 'c%s' % id(self.config)
         if not hasattr(_MODELS, models_key):
             setattr(_MODELS, models_key, {})
+
         class MetaModel(type):
             'Meta class for Model'
             def __new__(mcs, name, bases, dict):
@@ -486,19 +506,19 @@ class Model(object):
     _config = None
     _fields = None
 
-    def __init__(self, id=None, **kwargs):
+    def __init__(self, id=None, _default=True, **kwargs):
         super(Model, self).__init__()
         if id:
             assert not kwargs
         self.__id = id or Model.__counter
         if self.__id < 0:
             Model.__counter -= 1
-        self._values = {} # store the values of fields
-        self._changed = set() # store the changed fields
-        self._parent = None # store the parent record
-        self._parent_field_name = '' # store the field name in parent record
-        self._parent_name = '' # store the field name to parent record
-        if self.id < 0:
+        self._values = {}  # store the values of fields
+        self._changed = set()  # store the changed fields
+        self._parent = None  # store the parent record
+        self._parent_field_name = ''  # store the field name in parent record
+        self._parent_name = ''  # store the field name to parent record
+        if self.id < 0 and _default:
             self._default_get()
 
         for field_name, value in kwargs.iteritems():
@@ -625,12 +645,15 @@ class Model(object):
 
     def _read(self, name):
         'Read field'
-        fields = []
-        if not self._values:
+        fields = [name]
+        if name in self._values:
+            return
+        loading = self._fields[name]['loading']
+        if loading == 'eager':
             fields = [x for x, y in self._fields.iteritems()
-                    if y['type'] not in ('one2many', 'many2many', 'binary')]
+                    if y['loading'] == 'eager']
+        if not self._fields:
             fields.append('_timestamp')
-        fields.append(name)
         self._values.update(self._proxy.read(self.id, fields,
             self._config.context))
         for field in fields:
@@ -648,6 +671,8 @@ class Model(object):
 
     def _default_set(self, values):
         for field, value in values.iteritems():
+            if '.' in field:
+                continue
             definition = self._fields[field]
             if definition['type'] in ('one2many', 'many2many'):
                 if value and len(value) and isinstance(value[0], (int, long)):
@@ -670,13 +695,17 @@ class Model(object):
         values['id'] = self.id
         return values
 
-    def _on_change_args(self, args):
-        res = {}
+    def _get_on_change_value(self):
         values = self._get_eval()
         del values['id']
         for field, definition in self._fields.iteritems():
             if definition['type'] in ('one2many', 'many2many'):
                 values[field] = [x._get_eval() for x in getattr(self, field)]
+        return values
+
+    def _on_change_args(self, args):
+        res = {}
+        values = self._get_on_change_value()
         if self._parent:
             values['_parent_%s' % self._parent_name] = \
                     _EvalEnvironment(self._parent)
@@ -691,11 +720,8 @@ class Model(object):
         return res
 
     def _on_change_set(self, field, value):
-        if self._fields[field]['type'] in ('one2many', 'many2many'):
-            if isinstance(value, (list, tuple)):
-                self._values[field] = value
-                self._changed.add(field)
-                return
+        if (self._fields[field]['type'] in ('one2many', 'many2many')
+                and not isinstance(value, (list, tuple))):
             to_remove = []
             if value and value.get('remove'):
                 for record_id in value['remove']:
@@ -709,8 +735,10 @@ class Model(object):
                 for vals in value.get('add', []):
                     relation = Model.get(self._fields[field]['relation'],
                             self._config)
-                    record = relation()
+                    record = relation(_default=False)
                     for i, j in vals.iteritems():
+                        if '.' in i:
+                            continue
                         record._values[i] = j
                         record._changed.add(i)
                     # append without signal
@@ -721,11 +749,13 @@ class Model(object):
                     for record in getattr(self, field):
                         if record.id == vals['id']:
                             for i, j in vals.iteritems():
+                                if '.' in i:
+                                    continue
                                 record._values[i] = j
                                 record._changed.add(i)
         else:
             self._values[field] = value
-            self._changed.add(field)
+        self._changed.add(field)
 
     def _on_change(self, name):
         'Call on_change for field'
@@ -747,6 +777,9 @@ class Model(object):
                 self._on_change_set(field, value)
             for field, value in later.iteritems():
                 self._on_change_set(field, value)
+        values = {}
+        to_change = set()
+        later = set()
         for field, definition in self._fields.iteritems():
             if not definition.get('on_change_with'):
                 continue
@@ -754,11 +787,23 @@ class Model(object):
                 continue
             if field == name:
                 continue
-            args = self._on_change_args(definition['on_change_with'])
+            if to_change & set(definition['on_change_with']):
+                later.add(field)
+            to_change.add(field)
+            values.update(self._on_change_args(definition['on_change_with']))
+        if to_change:
+            context = self._config.context
+            result = getattr(self._proxy, 'on_change_with')(list(to_change),
+                values, context)
+            for field, value in result.items():
+                self._on_change_set(field, value)
+        for field in later:
+            definition = self._fields[field]
+            values = self._on_change_args(definition['on_change_with'])
             context = self._config.context
-            res = getattr(self._proxy, 'on_change_with_%s' % field)(args,
+            result = getattr(self._proxy, 'on_change_with_%s' % field)(values,
                     context)
-            self._on_change_set(field, res)
+            self._on_change_set(field, result)
         if self._parent:
             self._parent._changed.add(self._parent_field_name)
             self._parent._on_change(self._parent_field_name)
@@ -772,62 +817,53 @@ class Wizard(object):
             assert len(set(type(x) for x in models)) == 1
         super(Wizard, self).__init__()
         self.name = name
-        self.state = None
-        self.states = ['init']
         self.form = None
+        self.form_state = None
         self._config = config or proteus.config.get_config()
         self._context = context or {}
         self._proxy = self._config.get_proxy(name, type='wizard')
-        self.id = self._proxy.create(self._config.context)
-        if models:
-            self.datas = {
-                    'model': models[0].__class__.__name__,
-                    'id': models[0].id,
-                    'ids': [model.id for model in models]
-                    }
-        else:
-            self.datas = {}
-        self.execute('init')
+        result = self._proxy.create(self._config.context)
+        self.session_id, self.start_state, self.end_state = result
+        self.states = [self.start_state]
+        self.models = models
+        self.execute(self.start_state)
 
     def execute(self, state):
         assert state in self.states
 
-        if 'form' not in self.datas:
-            self.datas['form'] = {}
-
-        if self.form:
-            self.datas['form'].update(self.form._get_values())
-
         self.state = state
         while self.state != 'end':
             ctx = self._context.copy()
             ctx.update(self._config.context)
-            ctx['active_id'] = self.datas.get('id')
-            ctx['active_ids'] = self.datas.get('ids')
-
-            res = self._proxy.execute(self.id, self.datas, self.state, ctx)
-            if not res:
-                break
-
-            if 'datas' in res:
-                self.datas['form'] = res['datas']
-            elif res['type'] == 'form':
-                self.datas['form'] = {}
-
-            if res['type'] == 'form':
-                self.states = [x[0] for x in res['state']]
-                # XXX set context
-                self.form = Model.get(res['object'])()
-                self.form._default_set(self.datas['form'])
+            if self.models:
+                ctx['active_id'] = self.models[0].id
+                ctx['active_ids'] = [model.id for model in self.models]
+                ctx['active_model'] = self.models[0].__class__.__name__
+            else:
+                ctx['active_id'] = None
+                ctx['active_ids'] = None
+                ctx['active_model'] = None
+
+            if self.form:
+                data = {self.form_state: self.form._get_on_change_value()}
+            else:
+                data = {}
+
+            result = self._proxy.execute(self.session_id, data, self.state,
+                ctx)
+
+            if 'view' in result:
+                view = result['view']
+                self.form = Model.get(view['fields_view']['model'])()
+                self.form._default_set(view['defaults'])
+                self.states = [b['state'] for b in view['buttons']]
+                self.form_state = view['state']
                 return
-            elif res['type'] == 'action':
-                # TODO run action
-                self.state = res['state']
-            elif res['type'] == 'print':
-                # TODO run print
-                self.state = res['state']
-            elif res['type'] == 'state':
-                self.state = res['state']
-
-        if self.state == 'end':
-            self._proxy.delete(self.id, self._config.context)
+            else:
+                self.state = self.end_state
+
+            if 'actions' in result:
+                pass  # TODO
+
+        if self.state == self.end_state:
+            self._proxy.delete(self.session_id, self._config.context)
diff --git a/proteus/config.py b/proteus/config.py
index a374c5b..ef02ba2 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -8,14 +8,16 @@ __all__ = ['set_trytond', 'set_xmlrpc', 'get_config']
 import xmlrpclib
 import threading
 from decimal import Decimal
-from types import NoneType
 import datetime
 import time
 
+
 def dump_decimal(self, value, write):
-    write("<value><double>")
-    write(str(value))
-    write("</double></value>\n")
+    value = {'__class__': 'Decimal',
+        'decimal': str(value),
+        }
+    self.dump_struct(value, write)
+
 
 def dump_buffer(self, value, write):
     self.write = write
@@ -23,16 +25,48 @@ def dump_buffer(self, value, write):
     value.encode(self)
     del self.write
 
+
+def dump_date(self, value, write):
+    value = {'__class__': 'date',
+        'year': value.year,
+        'month': value.month,
+        'day': value.day,
+        }
+    self.dump_struct(value, write)
+
+
+def dump_time(self, value, write):
+    value = {'__class__': 'time',
+        'hour': value.hour,
+        'minute': value.minute,
+        'second': value.second,
+        }
+    self.dump_struct(value, write)
+
 xmlrpclib.Marshaller.dispatch[Decimal] = dump_decimal
-xmlrpclib.Marshaller.dispatch[datetime.date] = \
-        lambda self, value, write: self.dump_datetime(
-                datetime.datetime.combine(value, datetime.time()), write)
+xmlrpclib.Marshaller.dispatch[datetime.date] = dump_date
+xmlrpclib.Marshaller.dispatch[datetime.time] = dump_time
 xmlrpclib.Marshaller.dispatch[buffer] = dump_buffer
 
-def _end_double(self, data):
-    self.append(Decimal(data))
+
+def end_struct(self, data):
+    mark = self._marks.pop()
+    # map structs to Python dictionaries
+    dct = {}
+    items = self._stack[mark:]
+    for i in range(0, len(items), 2):
+        dct[xmlrpclib._stringify(items[i])] = items[i + 1]
+    if '__class__' in dct:
+        if dct['__class__'] == 'date':
+            dct = datetime.date(dct['year'], dct['month'], dct['day'])
+        elif dct['__class__'] == 'time':
+            dct = datetime.time(dct['hour'], dct['minute'], dct['second'])
+        elif dct['__class__'] == 'Decimal':
+            dct = Decimal(dct['decimal'])
+    self._stack[mark:] = [dct]
     self._value = 0
-xmlrpclib.Unmarshaller.dispatch["double"] = _end_double
+
+xmlrpclib.Unmarshaller.dispatch['struct'] = end_struct
 
 _CONFIG = threading.local()
 _CONFIG.current = None
@@ -68,10 +102,15 @@ class _TrytondMethod(object):
         from trytond.cache import Cache
         from trytond.transaction import Transaction
 
-        assert self._name in self._object._rpc
+        if self._name in self._object._rpc:
+            readonly = not self._object._rpc[self._name]
+        elif self._name in getattr(self._object, '_buttons', {}):
+            readonly = False
+        else:
+            raise TypeError('%s is not callable' % self._name)
 
         with Transaction().start(self._config.database_name,
-                self._config.user) as transaction:
+                self._config.user, readonly=readonly) as transaction:
             Cache.clean(self._config.database_name)
             args = list(args)
             context = args.pop()
@@ -80,11 +119,12 @@ class _TrytondMethod(object):
                 del context['_timestamp']
             transaction.context = context
             res = getattr(self._object, self._name)(*args)
-            if self._object._rpc[self._name]:
+            if not readonly:
                 transaction.cursor.commit()
         Cache.resets(self._config.database_name)
         return res
 
+
 class TrytondProxy(object):
     'Proxy for function call for trytond'
 
@@ -154,8 +194,9 @@ class TrytondConfig(Config):
     __init__.__doc__ = object.__init__.__doc__
 
     def __repr__(self):
-        return "proteus.config.TrytondConfig('%s', '%s', '%s', config_file=%s)"\
-                % (self.database_name, self._user, self.database_type,
+        return "proteus.config.TrytondConfig"\
+            "('%s', '%s', '%s', config_file=%s)"\
+            % (self.database_name, self._user, self.database_type,
                 self.config_file)
     __repr__.__doc__ = object.__repr__.__doc__
 
@@ -178,7 +219,11 @@ class TrytondConfig(Config):
     def get_proxy_methods(self, name, type='model'):
         'Return list of methods'
         proxy = self.get_proxy(name, type=type)
-        return [x for x in proxy._object._rpc]
+        methods = [x for x in proxy._object._rpc]
+        if hasattr(proxy._object, '_buttons'):
+            methods += [x for x in proxy._object._buttons]
+        return methods
+
 
 def set_trytond(database_name=None, user='admin', database_type=None,
         language='en_US', password='', config_file=None):
@@ -201,6 +246,7 @@ class XmlrpcProxy(object):
         'Return attribute value'
         return getattr(self._object, name)
 
+
 class XmlrpcConfig(Config):
     'Configuration for XML-RPC'
 
@@ -236,10 +282,12 @@ class XmlrpcConfig(Config):
                 if x.startswith(object_)
                 and '.' not in x[len(object_) + 1:]]
 
+
 def set_xmlrpc(url):
     'Set XML-RPC as backend'
     _CONFIG.current = XmlrpcConfig(url)
     return _CONFIG.current
 
+
 def get_config():
     return _CONFIG.current
diff --git a/proteus/pyson.py b/proteus/pyson.py
index 5eca3cb..830c057 100644
--- a/proteus/pyson.py
+++ b/proteus/pyson.py
@@ -1,13 +1,14 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 __all__ = ['PYSONEncoder', 'PYSONDecoder', 'Eval', 'Not', 'Bool', 'And', 'Or',
-        'Equal', 'Greater', 'Less', 'If', 'Get', 'In', 'Date', 'DateTime']
-import sys
-if sys.version_info < (2, 6):
+    'Equal', 'Greater', 'Less', 'If', 'Get', 'In', 'Date', 'DateTime']
+try:
     import simplejson as json
-else:
+except ImportError:
     import json
 import datetime
+from dateutil.relativedelta import relativedelta
+from functools import reduce
 
 
 class PYSON(object):
@@ -22,6 +23,64 @@ class PYSON(object):
     def eval(dct, context):
         raise NotImplementedError
 
+    def __invert__(self):
+        if self.types() != set([bool]):
+            return Not(Bool(self))
+        else:
+            return Not(self)
+
+    def __and__(self, other):
+        if (isinstance(self, And)
+                and not isinstance(self, Or)):
+            self._statements.append(other)
+            return self
+        if (isinstance(other, PYSON)
+                and other.types() != set([bool])):
+            other = Bool(other)
+        if self.types() != set([bool]):
+            return And(Bool(self), other)
+        else:
+            return And(self, other)
+
+    def __or__(self, other):
+        if isinstance(self, Or):
+            self._statements.append(other)
+            return self
+        if (isinstance(other, PYSON)
+                and other.types() != set([bool])):
+            other = Bool(other)
+        if self.types() != set([bool]):
+            return Or(Bool(self), other)
+        else:
+            return Or(self, other)
+
+    def __eq__(self, other):
+        return Equal(self, other)
+
+    def __ne__(self, other):
+        return Not(Equal(self, other))
+
+    def __gt__(self, other):
+        return Greater(self, other)
+
+    def __ge__(self, other):
+        return Greater(self, other, True)
+
+    def __lt__(self, other):
+        return Less(self, other)
+
+    def __le__(self, other):
+        return Less(self, other, True)
+
+    def get(self, k, d=''):
+        return Get(self, k, d)
+
+    def in_(self, obj):
+        return In(self, obj)
+
+    def contains(self, k):
+        return In(k, self)
+
 
 class PYSONEncoder(json.JSONEncoder):
 
@@ -133,7 +192,7 @@ class And(PYSON):
                 assert isinstance(statement, bool), \
                         'statement must be boolean'
         assert len(statements) >= 2, 'must have at least 2 statements'
-        self._statements = statements
+        self._statements = list(statements)
 
     def pyson(self):
         return {
@@ -250,7 +309,8 @@ class If(PYSON):
     def __init__(self, condition, then_statement, else_statement=None):
         super(If, self).__init__()
         if isinstance(condition, PYSON):
-            assert condition.types() == set([bool]), 'condition must be boolean'
+            assert condition.types() == set([bool]), \
+                'condition must be boolean'
         else:
             assert isinstance(condition, bool), 'condition must be boolean'
         if isinstance(then_statement, PYSON):
@@ -396,23 +456,14 @@ class Date(PYSON):
 
     @staticmethod
     def eval(dct, context):
-        date = datetime.date.today()
-        replace = {}
-        for i, j in (('y', 'year'), ('M', 'month'), ('d', 'day')):
-            if dct[i] is not None:
-                replace[j] = dct[i]
-        date = date.replace(**replace)
-        if dct['dy']:
-            year = date.year + dct['dy']
-            date = date.replace(year=year)
-        if dct['dM']:
-            month = date.month + dct['dM']
-            year = date.year + month / 12
-            month = month % 12
-            date = date.replace(year=year, month=month)
-        if dct['dd']:
-            date += datetime.timedelta(days=dct['dd'])
-        return date
+        return datetime.date.today() + relativedelta(
+            year=dct['y'],
+            month=dct['M'],
+            day=dct['d'],
+            years=dct['dy'],
+            months=dct['dM'],
+            days=dct['dd'],
+            )
 
 
 class DateTime(Date):
@@ -460,22 +511,23 @@ class DateTime(Date):
 
     @staticmethod
     def eval(dct, context):
-        date = Date.eval(dct, context)
-        datetime_ = datetime.datetime.combine(date,
-                datetime.datetime.now().time())
-        replace = {}
-        for i, j in (('h', 'hour'), ('m', 'minute'), ('s', 'second'),
-                ('ms', 'microsecond')):
-            if dct[i] is not None:
-                replace[j] = dct[i]
-        datetime_ = datetime_.replace(**replace)
-        delta = {}
-        for i, j in (('dh', 'hours'), ('dm', 'minutes'), ('ds', 'seconds'),
-                ('dms', 'microseconds')):
-            if dct[i]:
-                delta[j] = dct[i]
-        datetime_ += datetime.timedelta(**delta)
-        return datetime_
+        return datetime.datetime.now() + relativedelta(
+            year=dct['y'],
+            month=dct['M'],
+            day=dct['d'],
+            hour=dct['h'],
+            minute=dct['m'],
+            second=dct['s'],
+            microsecond=dct['ms'],
+            years=dct['dy'],
+            months=dct['dM'],
+            days=dct['dd'],
+            hours=dct['dh'],
+            minutes=dct['dm'],
+            seconds=dct['ds'],
+            microseconds=dct['dms'],
+            )
+
 
 CONTEXT = {
     'Eval': Eval,
diff --git a/proteus/tests/__init__.py b/proteus/tests/__init__.py
index fe882b9..baddecf 100644
--- a/proteus/tests/__init__.py
+++ b/proteus/tests/__init__.py
@@ -4,6 +4,7 @@ import os
 import sys
 import unittest
 
+
 def test_suite():
     suite = unittest.TestSuite()
     loader = unittest.TestLoader()
@@ -15,6 +16,7 @@ def test_suite():
             suite.addTests(loader.loadTestsFromModule(module))
     return suite
 
+
 def main():
     suite = test_suite()
     runner = unittest.TextTestRunner()
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
index 704722b..db6243c 100644
--- a/proteus/tests/test_model.py
+++ b/proteus/tests/test_model.py
@@ -39,7 +39,7 @@ class TestModel(TestCase):
         admin.create_uid = admin
         admin.create_uid = None
 
-        test = User(write_uid=False)
+        User(write_uid=False)
 
     def test_one2many(self):
         Group = Model.get('res.group')
@@ -241,7 +241,7 @@ class TestModel(TestCase):
         self.assertNotEqual(admin1, None)
         self.assertNotEqual(admin1, False)
 
-        self.failUnlessRaises(NotImplementedError, lambda: admin1 == 1)
+        self.assertRaises(NotImplementedError, lambda: admin1 == 1)
 
     def test_default_set(self):
         User = Model.get('res.user')
@@ -289,6 +289,14 @@ class TestModel(TestCase):
         trigger.on_create = True
         self.assertEqual(trigger.on_time, False)
 
+    def test_on_change_with(self):
+        Attachment = Model.get('ir.attachment')
+
+        attachment = Attachment()
+
+        attachment.description = 'Test'
+        self.assertEqual(attachment.summary, 'Test')
+
     def test_on_change_set(self):
         User = Model.get('res.user')
         Group = Model.get('res.group')
diff --git a/proteus/tests/test_wizard.py b/proteus/tests/test_wizard.py
index 2b824c3..86fb2a8 100644
--- a/proteus/tests/test_wizard.py
+++ b/proteus/tests/test_wizard.py
@@ -12,14 +12,18 @@ class TestWizard(TestCase):
     def test_translation_clean(self):
         translation_clean = Wizard('ir.translation.clean')
         self.assertEqual(translation_clean.form.__class__.__name__,
-                'ir.translation.clean.init')
-        translation_clean.execute('start')
+                'ir.translation.clean.start')
+        translation_clean.execute('clean')
+        self.assertEqual(translation_clean.form.__class__.__name__,
+            'ir.translation.clean.succeed')
 
     def test_translation_export(self):
+        Lang = Model.get('ir.lang')
+        Module = Model.get('ir.module.module')
         translation_export = Wizard('ir.translation.export')
-        translation_export.form.lang = 'en_US'
-        translation_export.form.module = 'ir'
-        translation_export.execute('start')
+        translation_export.form.language, = Lang.find([('code', '=', 'en_US')])
+        translation_export.form.module, = Module.find([('name', '=', 'ir')])
+        translation_export.execute('export')
         self.assert_(translation_export.form.file)
         translation_export.execute('end')
 
diff --git a/setup.py b/setup.py
index 4d1e957..1799c38 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,6 @@
 #This file is part of Tryton.  The COPYRIGHT file at the top level of
 #this repository contains the full copyright notices and license terms.
 from setuptools import setup, find_packages
-import sys
 import os
 import proteus
 
@@ -10,6 +9,7 @@ major_version, minor_version, _ = proteus.__version__.split('.', 2)
 major_version = int(major_version)
 minor_version = int(minor_version)
 
+
 def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
 
@@ -36,9 +36,14 @@ setup(name='proteus',
         'Topic :: Office/Business',
     ],
     license='LGPL-3',
+    install_requires=[
+        "python-dateutil",
+        ],
     extras_require={
         'trytond': ['trytond >= %s.%s, < %s.%s' %
             (major_version, minor_version, major_version, minor_version + 1)],
+        'simplejson': ['simplejson'],
+        'cdecimal': ['cdecimal'],
     },
     test_suite='proteus.tests',
     tests_require=('trytond >= %s.%s, < %s.%s' %
commit 04cccb92a2cbe6074cb75c9f26576e5aeb4a0979
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sun Mar 25 15:28:18 2012 +0200

    Adding Format header for DEP5.

diff --git a/debian/copyright b/debian/copyright
index 0b53b66..5b70b16 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,3 +1,5 @@
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+
 Files: *
 Copyright:
  (C) 2010-2011 Cedric Krier
commit 5747bf46c9fcccbf3f042bfbe7dbb4209cfa86bf
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri Feb 24 14:01:04 2012 +0100

    Updating year in copyright.

diff --git a/debian/copyright b/debian/copyright
index e0e61d3..0b53b66 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -5,7 +5,7 @@ Copyright:
 License: LGPL-3+
 
 Files: debian/*
-Copyright: (C) 2011 Mathias Behrle <mathiasb at m9s.biz>
+Copyright: (C) 2011-2012 Mathias Behrle <mathiasb at m9s.biz>
 License: GPL-3+
 
 License: LGPL-3+
commit 49ffd7e25fe5cd177629922ea7a1df58c61907e6
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri Feb 24 13:47:03 2012 +0100

    Updating to Standards-Version: 3.9.3, no changes needed.

diff --git a/debian/control b/debian/control
index db81f9e..5caba0a 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@ Maintainer: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
 Build-Depends: debhelper (>= 8), python (>= 2.6.6-3~), python-setuptools
-Standards-Version: 3.9.2
+Standards-Version: 3.9.3
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
 Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
commit 3f009ddf7738790ef5c6750bd2c273c46bf0df20
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Dec 26 18:09:16 2011 +0100

    Releasing debian version 2.2.1-1.

diff --git a/debian/changelog b/debian/changelog
index bd0df3d..115f2d0 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+tryton-proteus (2.2.1-1) unstable; urgency=low
+
+  * Merging upstream version 2.2.1.
+  * Changing license to LGPL-3+ according to upstream.
+  * Bumping X-Python-Version to >=2.6.
+  * Merging upstream version 2.2.0.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Mon, 26 Dec 2011 13:56:23 +0100
+
 tryton-proteus (2.0.0-2) unstable; urgency=low
 
   [ Daniel Baumann ]
commit 9b4795fb96cad745e3a92d04c4c6503fbcb65f6c
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Dec 26 13:35:55 2011 +0100

    Merging upstream version 2.2.1.

diff --git a/CHANGELOG b/CHANGELOG
index f9e9b9a..ff71820 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Version 2.2.1 - 2011-12-26
+* Bug fixes (see mercurial logs for details)
+
 Version 2.2.0 - 2011-10-25
 * Bug fixes (see mercurial logs for details)
 * Change license to LGPL-3
diff --git a/PKG-INFO b/PKG-INFO
index 31eb9b1..5737c16 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
-Metadata-Version: 1.0
+Metadata-Version: 1.1
 Name: proteus
-Version: 2.2.0
+Version: 2.2.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 31eb9b1..5737c16 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
-Metadata-Version: 1.0
+Metadata-Version: 1.1
 Name: proteus
-Version: 2.2.0
+Version: 2.2.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus/__init__.py b/proteus/__init__.py
index 828c209..f07cd72 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.2.0"
+__version__ = "2.2.1"
 __all__ = ['Model', 'Wizard']
 from types import NoneType
 import threading
@@ -91,6 +91,14 @@ class CharDescriptor(FieldDescriptor):
         super(CharDescriptor, self).__set__(instance, value or '')
 
 
+class BinaryDescriptor(FieldDescriptor):
+    default = None
+
+    def __set__(self, instance, value):
+        assert isinstance(value, (basestring, buffer)) or value in (None, False)
+        super(BinaryDescriptor, self).__set__(instance, value or '')
+
+
 class IntegerDescriptor(FieldDescriptor):
     default = 0
 
@@ -295,7 +303,7 @@ class MetaModelFactory(object):
         'char': CharDescriptor,
         'text': CharDescriptor,
         'sha': CharDescriptor,
-        'binary': CharDescriptor,
+        'binary': BinaryDescriptor,
         'selection': CharDescriptor, # TODO implement its own descriptor
         'integer': IntegerDescriptor,
         'biginteger': IntegerDescriptor,
@@ -701,8 +709,12 @@ class Model(object):
                 for vals in value.get('add', []):
                     relation = Model.get(self._fields[field]['relation'],
                             self._config)
+                    record = relation()
+                    for i, j in vals.iteritems():
+                        record._values[i] = j
+                        record._changed.add(i)
                     # append without signal
-                    list.append(getattr(self, field), relation(**vals))
+                    list.append(getattr(self, field), record)
                 for vals in value.get('update', []):
                     if 'id' not in vals:
                         continue
@@ -735,8 +747,6 @@ class Model(object):
                 self._on_change_set(field, value)
             for field, value in later.iteritems():
                 self._on_change_set(field, value)
-            if self._parent:
-                self._parent._changed.add(self._parent_field_name)
         for field, definition in self._fields.iteritems():
             if not definition.get('on_change_with'):
                 continue
@@ -749,6 +759,9 @@ class Model(object):
             res = getattr(self._proxy, 'on_change_with_%s' % field)(args,
                     context)
             self._on_change_set(field, res)
+        if self._parent:
+            self._parent._changed.add(self._parent_field_name)
+            self._parent._on_change(self._parent_field_name)
 
 
 class Wizard(object):
diff --git a/proteus/config.py b/proteus/config.py
index 2eccfff..a374c5b 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -17,10 +17,17 @@ def dump_decimal(self, value, write):
     write(str(value))
     write("</double></value>\n")
 
+def dump_buffer(self, value, write):
+    self.write = write
+    value = xmlrpclib.Binary(value)
+    value.encode(self)
+    del self.write
+
 xmlrpclib.Marshaller.dispatch[Decimal] = dump_decimal
 xmlrpclib.Marshaller.dispatch[datetime.date] = \
         lambda self, value, write: self.dump_datetime(
                 datetime.datetime.combine(value, datetime.time()), write)
+xmlrpclib.Marshaller.dispatch[buffer] = dump_buffer
 
 def _end_double(self, data):
     self.append(Decimal(data))
commit 82fdd813e2140e67e99fc6a61e45fa917954d150
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Dec 26 13:23:26 2011 +0100

    Changing license to LGPL-3+ according to upstream.

diff --git a/debian/copyright b/debian/copyright
index 7159a8f..e0e61d3 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -2,12 +2,29 @@ Files: *
 Copyright:
  (C) 2010-2011 Cedric Krier
  (C) 2010-2011 B2CK SPRL
-License: GPL-3+
+License: LGPL-3+
 
 Files: debian/*
 Copyright: (C) 2011 Mathias Behrle <mathiasb at m9s.biz>
 License: GPL-3+
 
+License: LGPL-3+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation, either version 3 of
+ the License, or (at your option) any later version.
+ .
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Lesser General Public License for more details.
+ .
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program. If not, see <http://www.gnu.org/licenses/>.
+ .
+ The complete text of the GNU Lesser General Public License
+ can be found in /usr/share/common-licenses/LGPL-3 file.
+
 License: GPL-3+
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
commit 5bd5ebaa9e6c6e0f6c152b2378f6d7f136581244
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Sat Dec 17 13:59:46 2011 +0100

    Bumping X-Python-Version to >=2.6.

diff --git a/debian/control b/debian/control
index ed191bc..db81f9e 100644
--- a/debian/control
+++ b/debian/control
@@ -9,7 +9,7 @@ Standards-Version: 3.9.2
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
 Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
-X-Python-Version: >= 2.5
+X-Python-Version: >= 2.6
 
 Package: tryton-proteus
 Architecture: all
commit 2172c5e76ecdbe95b6da2826fa439593223e411b
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Mon Oct 31 16:21:38 2011 +0100

    Merging upstream version 2.2.0.

diff --git a/CHANGELOG b/CHANGELOG
index f604f5a..f9e9b9a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+Version 2.2.0 - 2011-10-25
+* Bug fixes (see mercurial logs for details)
+* Change license to LGPL-3
+* Drop support of Python 2.5
+
 Version 2.0.0 - 2011-04-28
 * Bug fixes (see mercurial logs for details)
 * Manage default values of trytond configuration
diff --git a/COPYRIGHT b/COPYRIGHT
index 34a6d18..de261a6 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,5 +1,5 @@
-Copyright (C) 2010 Cédric Krier.
-Copyright (C) 2010 B2CK SPRL.
+Copyright (C) 2010-2011 Cédric Krier.
+Copyright (C) 2010-2011 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/INSTALL b/INSTALL
index a87c0a0..4267630 100644
--- a/INSTALL
+++ b/INSTALL
@@ -4,7 +4,7 @@ Installing proteus
 Prerequisites
 -------------
 
- * Python 2.5 or later (http://www.python.org/)
+ * Python 2.6 or later (http://www.python.org/)
  * trytond (http://www.tryton.org/)
 
 Installation
diff --git a/LICENSE b/LICENSE
index 94a9ed0..fc8a5de 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,674 +1,165 @@
-                    GNU GENERAL PUBLIC LICENSE
+		   GNU LESSER GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received.  You must make sure that they, too, receive
-or can get the source code.  And you must show them these terms so they
-know their rights.
-
-  Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-  For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software.  For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-  Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the manufacturer
-can do so.  This is fundamentally incompatible with the aim of
-protecting users' freedom to change the software.  The systematic
-pattern of such abuse occurs in the area of products for individuals to
-use, which is precisely where it is most unacceptable.  Therefore, we
-have designed this version of the GPL to prohibit the practice for those
-products.  If such problems arise substantially in other domains, we
-stand ready to extend this provision to those domains in future versions
-of the GPL, as needed to protect the freedom of users.
-
-  Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish to
-avoid the special danger that patents applied to a free program could
-make it effectively proprietary.  To prevent this, the GPL assures that
-patents cannot be used to render the program non-free.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-                       TERMS AND CONDITIONS
-
-  0. Definitions.
-
-  "This License" refers to version 3 of the GNU General Public License.
-
-  "Copyright" also means copyright-like laws that apply to other kinds of
-works, such as semiconductor masks.
-
-  "The Program" refers to any copyrightable work licensed under this
-License.  Each licensee is addressed as "you".  "Licensees" and
-"recipients" may be individuals or organizations.
-
-  To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of an
-exact copy.  The resulting work is called a "modified version" of the
-earlier work or a work "based on" the earlier work.
-
-  A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-  To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy.  Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-  To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies.  Mere interaction with a user through
-a computer network, with no transfer of a copy, is not conveying.
-
-  An interactive user interface displays "Appropriate Legal Notices"
-to the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License.  If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
-  1. Source Code.
-
-  The "source code" for a work means the preferred form of the work
-for making modifications to it.  "Object code" means any non-source
-form of a work.
-
-  A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
-  The "System Libraries" of an executable work include anything, other
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+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version. 
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/PKG-INFO b/PKG-INFO
index 6faf1a5..31eb9b1 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.0.0
+Version: 2.2.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
-License: GPL-3
-Download-URL: http://downloads.tryton.org/2.0/
+License: LGPL-3
+Download-URL: http://downloads.tryton.org/2.2/
 Description: proteus
         =======
         
@@ -142,7 +142,8 @@ Classifier: Environment :: Plugins
 Classifier: Intended Audience :: Developers
 Classifier: Intended Audience :: Financial and Insurance Industry
 Classifier: Intended Audience :: Legal Industry
-Classifier: License :: OSI Approved :: GNU General Public License (GPL)
+Classifier: License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
 Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
 Classifier: Topic :: Office/Business
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 6faf1a5..31eb9b1 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 2.0.0
+Version: 2.2.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
-License: GPL-3
-Download-URL: http://downloads.tryton.org/2.0/
+License: LGPL-3
+Download-URL: http://downloads.tryton.org/2.2/
 Description: proteus
         =======
         
@@ -142,7 +142,8 @@ Classifier: Environment :: Plugins
 Classifier: Intended Audience :: Developers
 Classifier: Intended Audience :: Financial and Insurance Industry
 Classifier: Intended Audience :: Legal Industry
-Classifier: License :: OSI Approved :: GNU General Public License (GPL)
+Classifier: License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
 Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
 Classifier: Topic :: Office/Business
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index 6e4caf7..747ad85 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -1,4 +1,4 @@
 
 
 [trytond]
-trytond >= 2.0, < 2.1
\ No newline at end of file
+trytond >= 2.2, < 2.3
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index 060f0f0..828c209 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "2.0.0"
+__version__ = "2.2.0"
 __all__ = ['Model', 'Wizard']
 from types import NoneType
 import threading
@@ -55,6 +55,7 @@ class FieldDescriptor(object):
         super(FieldDescriptor, self).__init__()
         self.name = name
         self.definition = definition
+        self.__doc__ = definition['string']
 
     def __get__(self, instance, owner):
         if instance.id > 0 and self.name not in instance._values:
@@ -87,7 +88,7 @@ class CharDescriptor(FieldDescriptor):
 
     def __set__(self, instance, value):
         assert isinstance(value, basestring) or value in (None, False)
-        super(CharDescriptor, self).__set__(instance, value)
+        super(CharDescriptor, self).__set__(instance, value or '')
 
 
 class IntegerDescriptor(FieldDescriptor):
@@ -173,6 +174,10 @@ class Many2OneDescriptor(FieldDescriptor):
         super(Many2OneDescriptor, self).__set__(instance, value)
 
 
+class One2OneDescriptor(Many2OneDescriptor):
+    pass
+
+
 class One2ManyDescriptor(FieldDescriptor):
     default = []
 
@@ -218,6 +223,10 @@ class Many2OneValueDescriptor(ValueDescriptor):
         return value and value.id or False
 
 
+class One2OneValueDescriptor(Many2OneValueDescriptor):
+    pass
+
+
 class One2ManyValueDescriptor(ValueDescriptor):
     def __get__(self, instance, owner):
         value = [('add', [])]
@@ -229,8 +238,7 @@ class One2ManyValueDescriptor(ValueDescriptor):
                         fields=record._changed)))
                 value[0][1].append(record.id)
             else:
-                value.append(('create', record._get_values(
-                    fields=record._changed)))
+                value.append(('create', record._get_values()))
         if value_list.record_removed:
             value.append(('unlink', [x.id for x in value_list.record_removed]))
         if value_list.record_deleted:
@@ -268,6 +276,10 @@ class Many2OneEvalDescriptor(EvalDescriptor):
         return False
 
 
+class One2OneEvalDescriptor(Many2OneEvalDescriptor):
+    pass
+
+
 class One2ManyEvalDescriptor(EvalDescriptor):
     def __get__(self, instance, owner):
         return [x.id for x in getattr(instance, self.name)]
@@ -296,18 +308,21 @@ class MetaModelFactory(object):
         'many2one': Many2OneDescriptor,
         'one2many': One2ManyDescriptor,
         'many2many': Many2ManyDescriptor,
+        'one2one': One2OneDescriptor,
     }
     value_descriptors = {
         'reference': ReferenceValueDescriptor,
         'many2one': Many2OneValueDescriptor,
         'one2many': One2ManyValueDescriptor,
         'many2many': Many2ManyValueDescriptor,
+        'one2one': One2OneValueDescriptor,
     }
     eval_descriptors = {
         'reference': ReferenceEvalDescriptor,
         'many2one': Many2OneEvalDescriptor,
         'one2many': One2ManyEvalDescriptor,
         'many2many': Many2ManyEvalDescriptor,
+        'one2one': One2OneEvalDescriptor,
     }
 
     def __init__(self, model_name, config=None):
diff --git a/proteus/config.py b/proteus/config.py
index 3059336..2eccfff 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -48,11 +48,6 @@ class Config(object):
     def get_proxy_methods(self, name):
         raise NotImplementedError
 
-    def __eq__(self, other):
-        if isinstance(other, Config):
-            return repr(self) == repr(other)
-        return NotImplemented
-
 
 class _TrytondMethod(object):
 
@@ -101,10 +96,10 @@ class TrytondConfig(Config):
     'Configuration for trytond'
 
     def __init__(self, database_name=None, user='admin', database_type=None,
-            language='en_US', password=''):
+            language='en_US', password='', config_file=None):
         super(TrytondConfig, self).__init__()
         from trytond.config import CONFIG
-        CONFIG.parse()
+        CONFIG.update_etc(config_file)
         if database_type is not None:
             CONFIG['db_type'] = database_type
         from trytond.modules import register_classes
@@ -121,6 +116,7 @@ class TrytondConfig(Config):
                 database_name = 'test_%s' % int(time.time())
         self.database_name = database_name
         self._user = user
+        self.config_file = config_file
 
         register_classes()
 
@@ -151,10 +147,23 @@ class TrytondConfig(Config):
     __init__.__doc__ = object.__init__.__doc__
 
     def __repr__(self):
-        return "proteus.config.TrytondConfig('%s', '%s', '%s')" % (
-                self.database_name, self._user, self.database_type)
+        return "proteus.config.TrytondConfig('%s', '%s', '%s', config_file=%s)"\
+                % (self.database_name, self._user, self.database_type,
+                self.config_file)
     __repr__.__doc__ = object.__repr__.__doc__
 
+    def __eq__(self, other):
+        if not isinstance(other, TrytondConfig):
+            raise NotImplementedError
+        return (self.database_name == other.database_name
+            and self._user == other._user
+            and self.database_type == other.database_type
+            and self.config_file == other.config_file)
+
+    def __hash__(self):
+        return hash((self.database_name, self._user,
+            self.database_type, self.config_file))
+
     def get_proxy(self, name, type='model'):
         'Return Proxy class'
         return TrytondProxy(name, self, type=type)
@@ -165,10 +174,10 @@ class TrytondConfig(Config):
         return [x for x in proxy._object._rpc]
 
 def set_trytond(database_name=None, user='admin', database_type=None,
-        language='en_US', password=''):
+        language='en_US', password='', config_file=None):
     'Set trytond package as backend'
     _CONFIG.current = TrytondConfig(database_name, user, database_type,
-            language=language, password=password)
+            language=language, password=password, config_file=config_file)
     return _CONFIG.current
 
 
@@ -200,6 +209,14 @@ class XmlrpcConfig(Config):
         return "proteus.config.XmlrpcConfig('%s')" % self.url
     __repr__.__doc__ = object.__repr__.__doc__
 
+    def __eq__(self, other):
+        if not isinstance(other, XmlrpcConfig):
+            raise NotImplementedError
+        return self.url == other.url
+
+    def __hash__(self):
+        return hash(self.url)
+
     def get_proxy(self, name, type='model'):
         'Return Proxy class'
         return XmlrpcProxy(name, self, type=type)
diff --git a/proteus/tests/test_config.py b/proteus/tests/test_config.py
index 8c568b4..35433a3 100644
--- a/proteus/tests/test_config.py
+++ b/proteus/tests/test_config.py
@@ -26,4 +26,4 @@ class TestConfig(TestCase):
         config2 = proteus.config.get_config()
         self.assertEqual(config1, config2)
 
-        self.assertEqual(config1.__eq__(None), NotImplemented)
+        self.assertRaises(NotImplementedError, config1.__eq__, None)
diff --git a/setup.py b/setup.py
index 6ed5377..4d1e957 100644
--- a/setup.py
+++ b/setup.py
@@ -10,10 +10,6 @@ major_version, minor_version, _ = proteus.__version__.split('.', 2)
 major_version = int(major_version)
 minor_version = int(minor_version)
 
-SIMPLEJSON = []
-if sys.version_info < (2, 6):
-    SIMPLEJSON = ['simplejson']
-
 def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
 
@@ -33,13 +29,13 @@ setup(name='proteus',
         'Intended Audience :: Developers',
         'Intended Audience :: Financial and Insurance Industry',
         'Intended Audience :: Legal Industry',
-        'License :: OSI Approved :: GNU General Public License (GPL)',
+        'License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)',
         'Operating System :: OS Independent',
-        'Programming Language :: Python',
+        'Programming Language :: Python :: 2.6',
+        'Programming Language :: Python :: 2.7',
         'Topic :: Office/Business',
     ],
-    license='GPL-3',
-    install_requires=SIMPLEJSON,
+    license='LGPL-3',
     extras_require={
         'trytond': ['trytond >= %s.%s, < %s.%s' %
             (major_version, minor_version, major_version, minor_version + 1)],
commit d70b0222784e15464c01b4a735c0b313624c4f01
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Thu Jul 14 01:26:46 2011 +0200

    Releasing debian version 2.0.0-2.

diff --git a/debian/changelog b/debian/changelog
index 666d191..bd0df3d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,16 @@
+tryton-proteus (2.0.0-2) unstable; urgency=low
+
+  [ Daniel Baumann ]
+  * Not wrapping uploaders field, it does not exceed 80 chars.
+  * Compacting copyright file.
+  * Moving to source format 3.0 (quilt).
+  * Updating manpage.
+
+  [ Mathias Behrle ]
+  * Moving from deprecated python-support to dh_python2.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Thu, 14 Jul 2011 01:26:41 +0200
+
 tryton-proteus (2.0.0-1) unstable; urgency=low
 
   * Updating to standards version 3.9.2.
commit 1ab122b1eb9e1c03a7a3e0bf4a232da70fc697af
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Wed Jul 13 19:36:17 2011 +0200

    Moving from deprecated python-support to dh_python2.

diff --git a/debian/control b/debian/control
index e3b4868..ed191bc 100644
--- a/debian/control
+++ b/debian/control
@@ -4,11 +4,12 @@ Priority: optional
 Maintainer: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
 Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
-Build-Depends: debhelper (>= 8), python, python-setuptools, python-support
+Build-Depends: debhelper (>= 8), python (>= 2.6.6-3~), python-setuptools
 Standards-Version: 3.9.2
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
 Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
+X-Python-Version: >= 2.5
 
 Package: tryton-proteus
 Architecture: all
diff --git a/debian/pycompat b/debian/pycompat
deleted file mode 100644
index 0cfbf08..0000000
--- a/debian/pycompat
+++ /dev/null
@@ -1 +0,0 @@
-2
diff --git a/debian/pyversions b/debian/pyversions
deleted file mode 100644
index b3dc41e..0000000
--- a/debian/pyversions
+++ /dev/null
@@ -1 +0,0 @@
-2.5-
diff --git a/debian/rules b/debian/rules
index 000210b..e32b791 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,4 +1,9 @@
 #!/usr/bin/make -f
 
 %:
-	dh ${@}
+	dh ${@} --with python2
+
+override_dh_auto_clean:
+	dh_auto_clean
+
+	rm -rf *.egg-info
commit cf227d5a9277d8ce956c5e7bfc64dd3d12035417
Author: Daniel Baumann <daniel at debian.org>
Date:   Sun Jul 10 15:10:31 2011 +0200

    Updating manpage.

diff --git a/debian/manpages/proteus.1 b/debian/manpages/proteus.1
index efe040e..c2550ac 100644
--- a/debian/manpages/proteus.1
+++ b/debian/manpages/proteus.1
@@ -1,4 +1,4 @@
-.TH PROTEUS 1 "2011\-01\-15" "1.8" "Tryton Application Platform"
+.TH PROTEUS 1 "2011\-07\-11" "2.0" "Tryton Application Platform"
 
 .SH NAME
 proteus \- Tryton Application Platform (Proteus)
@@ -21,4 +21,4 @@ More information about Tryton Proteus and the Tryton project can be found at <\f
 .SH AUTHOR
 Tryton proteus was written by the Tryton project <\fIhttp://www.tryton.org/\fR>.
 .PP
-This manual page was written by Mathias Behrle <\fImathiasb at m9s.biz\fR>, for the Debian project (but may be used by others).
+This manual page was written by Mathias Behrle <\fImathiasb at m9s.biz\fR>.
commit fede02f4baae4b56b6d4bafe8a0cd57042957cf7
Author: Daniel Baumann <daniel at debian.org>
Date:   Sun Jul 10 15:09:55 2011 +0200

    Moving to source format 3.0 (quilt).

diff --git a/debian/README.source b/debian/README.source
deleted file mode 100644
index 18b6b24..0000000
--- a/debian/README.source
+++ /dev/null
@@ -1,37 +0,0 @@
-Package Repositories
---------------------
-
-Backports for the current stable debian distribution as well as snapshots of
-unreleased versions may be available in repositories listed on the maintainers
-homepage. The current URL of the maintainer homepage can be seen in
-debian/copyright.
-
-
-Source Access
--------------
-
-You can obtain the sources of this package with:
-
-  $ apt-get source ${PACKAGE}
-
-whereas '${PACKAGE}' has to be replaced with the actual name of the package.
-
-This package is maintained with the Git version control system. The current git
-source tree can be obtained with:
-
-  $ git clone ${GIT_URI}
-
-whereas '${GIT_URI}' has to be replaced with the actual URI for the Git
-repository. The current Git URI can be seen in debian/control in the extracted
-package sources.
-
-More information about Git can be found in the git-core package.
-
-This package may use the Quilt patch system to manage all modifications to the
-upstream source. Changes, if any, are stored in the source package as diffs in
-debian/diff and are applied during the build. Current modifications can be
-applied to the source tree with:
-
-  $ QUILT_PATCHES=debian/patches quilt push -a
-
-More information about Quilt can be found in the quilt package.
diff --git a/debian/source/options b/debian/source/options
new file mode 100644
index 0000000..d053b65
--- /dev/null
+++ b/debian/source/options
@@ -0,0 +1,2 @@
+compression = gzip
+compression-level = 9
commit 32ef96f02c9f328a46ed2feb00c3ded20ff6ed32
Author: Daniel Baumann <daniel at debian.org>
Date:   Sun Jul 10 15:09:48 2011 +0200

    Compacting copyright file.

diff --git a/debian/copyright b/debian/copyright
index 1e46969..7159a8f 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,32 +1,14 @@
-Upstream-Contact: Tryton project <tryton at googlegroups.com>
-Upstream-Homepage: http://downloads.tryton.org/
-Maintainer-Contact: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
-Maintainer-Homepage: http://tryton.debian-maintainers.org/
-
 Files: *
 Copyright:
  (C) 2010-2011 Cedric Krier
  (C) 2010-2011 B2CK SPRL
 License: GPL-3+
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
- .
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- .
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- .
- On Debian systems, the complete text of the GNU General Public License
- can be found in /usr/share/common-licenses/GPL-3 file.
 
 Files: debian/*
 Copyright: (C) 2011 Mathias Behrle <mathiasb at m9s.biz>
 License: GPL-3+
+
+License: GPL-3+
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
@@ -40,5 +22,5 @@ License: GPL-3+
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <http://www.gnu.org/licenses/>.
  .
- On Debian systems, the complete text of the GNU General Public License
+ The complete text of the GNU General Public License
  can be found in /usr/share/common-licenses/GPL-3 file.
commit 8813b23295f80e0db177733712c9d2c7ddf67baf
Author: Daniel Baumann <daniel at debian.org>
Date:   Sun Jul 10 15:09:23 2011 +0200

    Not wrapping uploaders field, it does not exceed 80 chars.

diff --git a/debian/control b/debian/control
index f41aa58..e3b4868 100644
--- a/debian/control
+++ b/debian/control
@@ -2,9 +2,7 @@ Source: tryton-proteus
 Section: python
 Priority: optional
 Maintainer: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
-Uploaders:
- Daniel Baumann <daniel at debian.org>,
- Mathias Behrle <mathiasb at m9s.biz>
+Uploaders: Daniel Baumann <daniel at debian.org>, Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
 Build-Depends: debhelper (>= 8), python, python-setuptools, python-support
 Standards-Version: 3.9.2
commit 675a6d7b88b85f8da6295c7891ddf05d13bc0034
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue May 24 21:40:09 2011 +0200

    Releasing debian version 2.0.0-1.

diff --git a/debian/changelog b/debian/changelog
index 3d28bd8..666d191 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+tryton-proteus (2.0.0-1) unstable; urgency=low
+
+  * Updating to standards version 3.9.2.
+  * Merging upstream version 2.0.0.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Tue, 24 May 2011 21:37:33 +0200
+
 tryton-proteus (1.8.1-1) unstable; urgency=low
 
   * Merging upstream version 1.8.1.
commit 75bd795737bb017f1470564be6d4db14a71f7411
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue May 24 19:13:30 2011 +0200

    Merging upstream version 2.0.0.

diff --git a/CHANGELOG b/CHANGELOG
index 7624c29..f604f5a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
-Version 1.8.1 - 2011-02-13
+Version 2.0.0 - 2011-04-28
 * Bug fixes (see mercurial logs for details)
+* Manage default values of trytond configuration
 
 Version 1.8.0 - 2010-12-24
 * Initial release
diff --git a/COPYRIGHT b/COPYRIGHT
index de261a6..34a6d18 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,5 +1,5 @@
-Copyright (C) 2010-2011 Cédric Krier.
-Copyright (C) 2010-2011 B2CK SPRL.
+Copyright (C) 2010 Cédric Krier.
+Copyright (C) 2010 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/INSTALL b/INSTALL
index 04691dd..a87c0a0 100644
--- a/INSTALL
+++ b/INSTALL
@@ -4,7 +4,7 @@ Installing proteus
 Prerequisites
 -------------
 
- * Python 2.4 or later (http://www.python.org/)
+ * Python 2.5 or later (http://www.python.org/)
  * trytond (http://www.tryton.org/)
 
 Installation
diff --git a/PKG-INFO b/PKG-INFO
index ad01dde..6faf1a5 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 1.8.1
+Version: 2.0.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: GPL-3
-Download-URL: http://downloads.tryton.org/1.8/
+Download-URL: http://downloads.tryton.org/2.0/
 Description: proteus
         =======
         
@@ -30,6 +30,8 @@ Description: proteus
             >>> config = config.set_trytond(':memory:', database_type='sqlite')
         
         When connecting to a database that doesn't exist, Proteus will create it.
+        If no database name was given, then Proteus will generate one. It will choose
+        ':memory': for 'sqlite' type otherwise `'test_%' % int(time.time())`.
         
         Installing a module
         ~~~~~~~~~~~~~~~~~~~
diff --git a/README b/README
index b4a4955..7e0a957 100644
--- a/README
+++ b/README
@@ -21,6 +21,8 @@ Configuration to connect to a sqlite memory database using trytond as module.
     >>> config = config.set_trytond(':memory:', database_type='sqlite')
 
 When connecting to a database that doesn't exist, Proteus will create it.
+If no database name was given, then Proteus will generate one. It will choose
+':memory': for 'sqlite' type otherwise `'test_%' % int(time.time())`.
 
 Installing a module
 ~~~~~~~~~~~~~~~~~~~
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index ad01dde..6faf1a5 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,12 +1,12 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 1.8.1
+Version: 2.0.0
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
 Author-email: info at b2ck.com
 License: GPL-3
-Download-URL: http://downloads.tryton.org/1.8/
+Download-URL: http://downloads.tryton.org/2.0/
 Description: proteus
         =======
         
@@ -30,6 +30,8 @@ Description: proteus
             >>> config = config.set_trytond(':memory:', database_type='sqlite')
         
         When connecting to a database that doesn't exist, Proteus will create it.
+        If no database name was given, then Proteus will generate one. It will choose
+        ':memory': for 'sqlite' type otherwise `'test_%' % int(time.time())`.
         
         Installing a module
         ~~~~~~~~~~~~~~~~~~~
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
index 275aecc..6e4caf7 100644
--- a/proteus.egg-info/requires.txt
+++ b/proteus.egg-info/requires.txt
@@ -1,4 +1,4 @@
 
 
 [trytond]
-trytond >= 1.8, < 1.9
\ No newline at end of file
+trytond >= 2.0, < 2.1
\ No newline at end of file
diff --git a/proteus/__init__.py b/proteus/__init__.py
index e76c87b..060f0f0 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "1.8.1"
+__version__ = "2.0.0"
 __all__ = ['Model', 'Wizard']
 from types import NoneType
 import threading
@@ -86,7 +86,7 @@ class CharDescriptor(FieldDescriptor):
     default = None
 
     def __set__(self, instance, value):
-        assert isinstance(value, basestring)
+        assert isinstance(value, basestring) or value in (None, False)
         super(CharDescriptor, self).__set__(instance, value)
 
 
@@ -102,8 +102,7 @@ class FloatDescriptor(FieldDescriptor):
     default = 0.0
 
     def __set__(self, instance, value):
-        assert isinstance(value, float)
-        super(FloatDescriptor, self).__set__(instance, value)
+        super(FloatDescriptor, self).__set__(instance, float(value))
 
 
 class NumericDescriptor(FieldDescriptor):
@@ -145,13 +144,13 @@ class DateDescriptor(FieldDescriptor):
         return value
 
     def __set__(self, instance, value):
-        assert isinstance(value, datetime.date)
+        assert isinstance(value, datetime.date) or value in (None, False)
         super(DateDescriptor, self).__set__(instance, value)
 
 
 class DateTimeDescriptor(FieldDescriptor):
     def __set__(self, instance, value):
-        assert isinstance(value, datetime.datetime)
+        assert isinstance(value, datetime.datetime) or value in (None, False)
         super(DateTimeDescriptor, self).__set__(instance, value)
 
 
@@ -487,10 +486,12 @@ class Model(object):
                         for x in value]
                 getattr(self, field_name).extend(value)
             else:
-                if (definition['type'] == 'many2one'
-                        and isinstance(value, (int, long))):
-                    relation = Model.get(definition['relation'])
-                    value = relation(value)
+                if definition['type'] == 'many2one':
+                    if (isinstance(value, (int, long)) and value is not False):
+                        relation = Model.get(definition['relation'])
+                        value = relation(value)
+                    elif value is False:
+                        value = None
                 setattr(self, field_name, value)
     __init__.__doc__ = object.__init__.__doc__
 
@@ -609,6 +610,12 @@ class Model(object):
         fields.append(name)
         self._values.update(self._proxy.read(self.id, fields,
             self._config.context))
+        for field in fields:
+            if (field in self._fields
+                    and self._fields[field]['type'] == 'float'
+                    and isinstance(self._values[field], Decimal)):
+                # XML-RPC return Decimal for double
+                self._values[field] = float(self._values[field])
 
     def _default_get(self):
         'Set default values'
@@ -715,11 +722,6 @@ class Model(object):
                 self._on_change_set(field, value)
             if self._parent:
                 self._parent._changed.add(self._parent_field_name)
-        if definition.get('change_default'):
-            context = self._config.context
-            default = Model.get('ir.default', config=self._config)
-            self._default_set(default.get_default(self.__class__.__name__,
-                '%s=%s' % (name, self._get_values([name])[name]), context))
         for field, definition in self._fields.iteritems():
             if not definition.get('on_change_with'):
                 continue
diff --git a/proteus/config.py b/proteus/config.py
index 6a7b2a6..3059336 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -10,6 +10,7 @@ import threading
 from decimal import Decimal
 from types import NoneType
 import datetime
+import time
 
 def dump_decimal(self, value, write):
     write("<value><double>")
@@ -21,7 +22,13 @@ xmlrpclib.Marshaller.dispatch[datetime.date] = \
         lambda self, value, write: self.dump_datetime(
                 datetime.datetime.combine(value, datetime.time()), write)
 
+def _end_double(self, data):
+    self.append(Decimal(data))
+    self._value = 0
+xmlrpclib.Unmarshaller.dispatch["double"] = _end_double
+
 _CONFIG = threading.local()
+_CONFIG.current = None
 
 
 class Config(object):
@@ -93,21 +100,27 @@ class TrytondProxy(object):
 class TrytondConfig(Config):
     'Configuration for trytond'
 
-    def __init__(self, database_name, user, database_type, language='en_US',
-            password=''):
+    def __init__(self, database_name=None, user='admin', database_type=None,
+            language='en_US', password=''):
         super(TrytondConfig, self).__init__()
         from trytond.config import CONFIG
-        CONFIG['db_type'] = database_type
         CONFIG.parse()
+        if database_type is not None:
+            CONFIG['db_type'] = database_type
         from trytond.modules import register_classes
         from trytond.pool import Pool
         from trytond.backend import Database
         from trytond.protocols.dispatcher import create
         from trytond.cache import Cache
         from trytond.transaction import Transaction
+        self.database_type = CONFIG['db_type']
+        if database_name is None:
+            if self.database_type == 'sqlite':
+                database_name = ':memory:'
+            else:
+                database_name = 'test_%s' % int(time.time())
         self.database_name = database_name
         self._user = user
-        self.database_type = database_type
 
         register_classes()
 
@@ -151,7 +164,7 @@ class TrytondConfig(Config):
         proxy = self.get_proxy(name, type=type)
         return [x for x in proxy._object._rpc]
 
-def set_trytond(database_name, user='admin', database_type='postgresql',
+def set_trytond(database_name=None, user='admin', database_type=None,
         language='en_US', password=''):
     'Set trytond package as backend'
     _CONFIG.current = TrytondConfig(database_name, user, database_type,
@@ -205,5 +218,4 @@ def set_xmlrpc(url):
     return _CONFIG.current
 
 def get_config():
-    # TODO raise exception if not set
     return _CONFIG.current
diff --git a/proteus/tests/test_config.py b/proteus/tests/test_config.py
index 7190524..8c568b4 100644
--- a/proteus/tests/test_config.py
+++ b/proteus/tests/test_config.py
@@ -7,7 +7,7 @@ import proteus.config
 class TestConfig(TestCase):
 
     def setUp(self):
-        proteus.config.set_trytond(':memory:', database_type='sqlite')
+        proteus.config.set_trytond(database_type='sqlite')
 
     def test_proxy(self):
         config = proteus.config.get_config()
@@ -22,7 +22,7 @@ class TestConfig(TestCase):
 
     def test_trytond_config_eq(self):
         config1 = proteus.config.get_config()
-        proteus.config.set_trytond(':memory:', database_type='sqlite')
+        proteus.config.set_trytond(database_type='sqlite')
         config2 = proteus.config.get_config()
         self.assertEqual(config1, config2)
 
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
index 8d1d760..704722b 100644
--- a/proteus/tests/test_model.py
+++ b/proteus/tests/test_model.py
@@ -7,7 +7,7 @@ from proteus import config, Model
 class TestModel(TestCase):
 
     def setUp(self):
-        config.set_trytond(':memory:', database_type='sqlite')
+        config.set_trytond(database_type='sqlite')
 
     def test_class_cache(self):
         User1 = Model.get('res.user')
@@ -39,6 +39,8 @@ class TestModel(TestCase):
         admin.create_uid = admin
         admin.create_uid = None
 
+        test = User(write_uid=False)
+
     def test_one2many(self):
         Group = Model.get('res.group')
         administration = Group.find([('name', '=', 'Administration')])[0]
diff --git a/proteus/tests/test_wizard.py b/proteus/tests/test_wizard.py
index 4541b8a..2b824c3 100644
--- a/proteus/tests/test_wizard.py
+++ b/proteus/tests/test_wizard.py
@@ -7,7 +7,7 @@ from proteus import config, Wizard, Model
 class TestWizard(TestCase):
 
     def setUp(self):
-        config.set_trytond(':memory:', database_type='sqlite')
+        config.set_trytond(database_type='sqlite')
 
     def test_translation_clean(self):
         translation_clean = Wizard('ir.translation.clean')
commit 894a0acdb13ad4f1890b6b8d92d7d6ff878a0094
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Apr 26 21:08:55 2011 +0200

    Updating to standards version 3.9.2.

diff --git a/debian/control b/debian/control
index 554bedb..f41aa58 100644
--- a/debian/control
+++ b/debian/control
@@ -7,7 +7,7 @@ Uploaders:
  Mathias Behrle <mathiasb at m9s.biz>
 Dm-Upload-Allowed: yes
 Build-Depends: debhelper (>= 8), python, python-setuptools, python-support
-Standards-Version: 3.9.1
+Standards-Version: 3.9.2
 Homepage: http://www.tryton.org/
 Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
 Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
commit bd0d65f6e61a0a3811707b89e9a287aad5aaef25
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Feb 15 13:20:06 2011 +0100

    Releasing debian version 1.8.1-1.

diff --git a/debian/changelog b/debian/changelog
index a2c2a44..3d28bd8 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+tryton-proteus (1.8.1-1) unstable; urgency=low
+
+  * Merging upstream version 1.8.1.
+  * Updating Copyright.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Tue, 15 Feb 2011 13:19:51 +0100
+
 tryton-proteus (1.8.0-1) unstable; urgency=low
 
   * Initial release.
commit d4cfe31dacce61102e9cbdd57bde69ec150db8c0
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Feb 15 12:38:47 2011 +0100

    Updating Copyright.

diff --git a/debian/copyright b/debian/copyright
index d242681..1e46969 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -5,8 +5,8 @@ Maintainer-Homepage: http://tryton.debian-maintainers.org/
 
 Files: *
 Copyright:
- (C) 2010 Cedric Krier
- (C) 2010 B2CK SPRL
+ (C) 2010-2011 Cedric Krier
+ (C) 2010-2011 B2CK SPRL
 License: GPL-3+
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
commit b6d16b2fde247cd7936964ffc5e3490674191d4f
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Tue Feb 15 11:46:35 2011 +0100

    Merging upstream version 1.8.1.

diff --git a/CHANGELOG b/CHANGELOG
index 0c22f94..7624c29 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,2 +1,5 @@
+Version 1.8.1 - 2011-02-13
+* Bug fixes (see mercurial logs for details)
+
 Version 1.8.0 - 2010-12-24
 * Initial release
diff --git a/COPYRIGHT b/COPYRIGHT
index 34a6d18..de261a6 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,5 +1,5 @@
-Copyright (C) 2010 Cédric Krier.
-Copyright (C) 2010 B2CK SPRL.
+Copyright (C) 2010-2011 Cédric Krier.
+Copyright (C) 2010-2011 B2CK SPRL.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
diff --git a/PKG-INFO b/PKG-INFO
index 3b0bb9f..ad01dde 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 1.8.0
+Version: 1.8.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
index 3b0bb9f..ad01dde 100644
--- a/proteus.egg-info/PKG-INFO
+++ b/proteus.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: proteus
-Version: 1.8.0
+Version: 1.8.1
 Summary: Library to access Tryton server as a client
 Home-page: http://www.tryton.org/
 Author: B2CK
diff --git a/proteus/__init__.py b/proteus/__init__.py
index aff60a8..e76c87b 100644
--- a/proteus/__init__.py
+++ b/proteus/__init__.py
@@ -3,7 +3,7 @@
 '''
 A library to access Tryton's models like a client.
 '''
-__version__ = "1.8.0"
+__version__ = "1.8.1"
 __all__ = ['Model', 'Wizard']
 from types import NoneType
 import threading
@@ -152,7 +152,7 @@ class DateDescriptor(FieldDescriptor):
 class DateTimeDescriptor(FieldDescriptor):
     def __set__(self, instance, value):
         assert isinstance(value, datetime.datetime)
-        super(DateTimeDescriptor, self).__set_(instance, value)
+        super(DateTimeDescriptor, self).__set__(instance, value)
 
 
 class Many2OneDescriptor(FieldDescriptor):
commit 196d6877318058f91fd0ba9d0e4ffa97b10d7ae5
Author: Mathias Behrle <mathiasb at m9s.biz>
Date:   Fri Jan 14 14:51:14 2011 +0100

    Adding debian version 1.8.0-1.

diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 0000000..0c22f94
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,2 @@
+Version 1.8.0 - 2010-12-24
+* Initial release
diff --git a/COPYRIGHT b/COPYRIGHT
new file mode 100644
index 0000000..34a6d18
--- /dev/null
+++ b/COPYRIGHT
@@ -0,0 +1,15 @@
+Copyright (C) 2010 Cédric Krier.
+Copyright (C) 2010 B2CK SPRL.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..04691dd
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,26 @@
+Installing proteus
+==================
+
+Prerequisites
+-------------
+
+ * Python 2.4 or later (http://www.python.org/)
+ * trytond (http://www.tryton.org/)
+
+Installation
+------------
+
+Once you've downloaded and unpacked the proteus source release, enter the
+directory where the archive was unpacked, and run:
+
+    python setup.py install
+
+Note that you may need administrator/root privileges for this step, as
+this command will by default attempt to install module to the Python
+site-packages directory on your system.
+
+For advanced options, please refer to the easy_install and/or the distutils
+documentation:
+
+  http://peak.telecommunity.com/DevCenter/EasyInstall
+  http://docs.python.org/inst/inst.html
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
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+pattern of such abuse occurs in the area of products for individuals to
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+  Finally, every program is threatened constantly by software patents.
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+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
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+"recipients" may be individuals or organizations.
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+  To "propagate" a work means to do anything with it that, without
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diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..e109118
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,5 @@
+include LICENSE
+include COPYRIGHT
+include README
+include INSTALL
+include CHANGELOG
diff --git a/PKG-INFO b/PKG-INFO
new file mode 100644
index 0000000..3b0bb9f
--- /dev/null
+++ b/PKG-INFO
@@ -0,0 +1,146 @@
+Metadata-Version: 1.0
+Name: proteus
+Version: 1.8.0
+Summary: Library to access Tryton server as a client
+Home-page: http://www.tryton.org/
+Author: B2CK
+Author-email: info at b2ck.com
+License: GPL-3
+Download-URL: http://downloads.tryton.org/1.8/
+Description: proteus
+        =======
+        
+        A library to access Tryton's models like a client.
+        
+        Installing
+        ----------
+        
+        See INSTALL
+        
+        Example of usage
+        ----------------
+        
+            >>> from proteus import config, Model, Wizard
+        
+        Creating a database
+        ~~~~~~~~~~~~~~~~~~~
+        
+        Configuration to connect to a sqlite memory database using trytond as module.
+        
+            >>> config = config.set_trytond(':memory:', database_type='sqlite')
+        
+        When connecting to a database that doesn't exist, Proteus will create it.
+        
+        Installing a module
+        ~~~~~~~~~~~~~~~~~~~
+        
+        Find the module, call the install button and run the install wizard.
+        
+            >>> Module = Model.get('ir.module.module')
+            >>> (party,) = Module.find([('name', '=', 'party')])
+            >>> Module.button_install([party.id], config.context)
+            >>> Wizard('ir.module.module.install_upgrade').execute('start')
+        
+        Creating a party
+        ~~~~~~~~~~~~~~~~
+        
+        First instanciate a new Party:
+        
+            >>> Party = Model.get('party.party')
+            >>> party = Party()
+            >>> party.id < 0
+            True
+        
+        Fill the fields:
+        
+            >>> party.name = 'ham'
+        
+        Save the instance into the server:
+        
+            >>> party.save()
+            >>> party.name
+            u'ham'
+            >>> party.id > 0
+            True
+        
+        Setting the language of the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        The language on party is a `Many2One` relation field. So it requires to get a
+        `Model` instance as value.
+        
+            >>> Lang = Model.get('ir.lang')
+            >>> (en,) = Lang.find([('code', '=', 'en_US')])
+            >>> party.lang = en
+            >>> party.save()
+            >>> party.lang.code
+            u'en_US'
+        
+        Creating an address for the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        Addresses are store on party with a `One2Many` field. So the new address just
+        needs to be appended to the list `addresses`.
+        
+            >>> Address = Model.get('party.address')
+            >>> address = Address()
+            >>> party.addresses.append(address)
+            >>> party.save()
+            >>> party.addresses #doctest: +ELLIPSIS
+            [proteus.Model.get('party.address')(...)]
+        
+        Adding category to the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        Categories are linked to party with a `Many2Many` field.
+        
+        So first create a category
+        
+            >>> Category = Model.get('party.category')
+            >>> category = Category()
+            >>> category.name = 'spam'
+            >>> category.save()
+        
+        Append it to categories of the party
+        
+            >>> party.categories.append(category)
+            >>> party.save()
+            >>> party.categories #doctest: +ELLIPSIS
+            [proteus.Model.get('party.category')(...)]
+        
+        Support
+        -------
+        
+        If you encounter any problems with Tryton, please don't hesitate to ask
+        questions on the Tryton bug tracker, mailing list, wiki or IRC channel:
+        
+          http://bugs.tryton.org/
+          http://groups.tryton.org/
+          http://wiki.tryton.org/
+          irc://irc.freenode.net/tryton
+        
+        License
+        -------
+        
+        See LICENSE
+        
+        Copyright
+        ---------
+        
+        See COPYRIGHT
+        
+        
+        For more information please visit the Tryton web site:
+        
+          http://www.tryton.org/
+        
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Plugins
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: Financial and Insurance Industry
+Classifier: Intended Audience :: Legal Industry
+Classifier: License :: OSI Approved :: GNU General Public License (GPL)
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Topic :: Office/Business
diff --git a/README b/README
new file mode 100644
index 0000000..b4a4955
--- /dev/null
+++ b/README
@@ -0,0 +1,126 @@
+proteus
+=======
+
+A library to access Tryton's models like a client.
+
+Installing
+----------
+
+See INSTALL
+
+Example of usage
+----------------
+
+    >>> from proteus import config, Model, Wizard
+
+Creating a database
+~~~~~~~~~~~~~~~~~~~
+
+Configuration to connect to a sqlite memory database using trytond as module.
+
+    >>> config = config.set_trytond(':memory:', database_type='sqlite')
+
+When connecting to a database that doesn't exist, Proteus will create it.
+
+Installing a module
+~~~~~~~~~~~~~~~~~~~
+
+Find the module, call the install button and run the install wizard.
+
+    >>> Module = Model.get('ir.module.module')
+    >>> (party,) = Module.find([('name', '=', 'party')])
+    >>> Module.button_install([party.id], config.context)
+    >>> Wizard('ir.module.module.install_upgrade').execute('start')
+
+Creating a party
+~~~~~~~~~~~~~~~~
+
+First instanciate a new Party:
+
+    >>> Party = Model.get('party.party')
+    >>> party = Party()
+    >>> party.id < 0
+    True
+
+Fill the fields:
+
+    >>> party.name = 'ham'
+
+Save the instance into the server:
+
+    >>> party.save()
+    >>> party.name
+    u'ham'
+    >>> party.id > 0
+    True
+
+Setting the language of the party
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The language on party is a `Many2One` relation field. So it requires to get a
+`Model` instance as value.
+
+    >>> Lang = Model.get('ir.lang')
+    >>> (en,) = Lang.find([('code', '=', 'en_US')])
+    >>> party.lang = en
+    >>> party.save()
+    >>> party.lang.code
+    u'en_US'
+
+Creating an address for the party
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Addresses are store on party with a `One2Many` field. So the new address just
+needs to be appended to the list `addresses`.
+
+    >>> Address = Model.get('party.address')
+    >>> address = Address()
+    >>> party.addresses.append(address)
+    >>> party.save()
+    >>> party.addresses #doctest: +ELLIPSIS
+    [proteus.Model.get('party.address')(...)]
+
+Adding category to the party
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Categories are linked to party with a `Many2Many` field.
+
+So first create a category
+
+    >>> Category = Model.get('party.category')
+    >>> category = Category()
+    >>> category.name = 'spam'
+    >>> category.save()
+
+Append it to categories of the party
+
+    >>> party.categories.append(category)
+    >>> party.save()
+    >>> party.categories #doctest: +ELLIPSIS
+    [proteus.Model.get('party.category')(...)]
+
+Support
+-------
+
+If you encounter any problems with Tryton, please don't hesitate to ask
+questions on the Tryton bug tracker, mailing list, wiki or IRC channel:
+
+  http://bugs.tryton.org/
+  http://groups.tryton.org/
+  http://wiki.tryton.org/
+  irc://irc.freenode.net/tryton
+
+License
+-------
+
+See LICENSE
+
+Copyright
+---------
+
+See COPYRIGHT
+
+
+For more information please visit the Tryton web site:
+
+  http://www.tryton.org/
diff --git a/debian/README.source b/debian/README.source
new file mode 100644
index 0000000..18b6b24
--- /dev/null
+++ b/debian/README.source
@@ -0,0 +1,37 @@
+Package Repositories
+--------------------
+
+Backports for the current stable debian distribution as well as snapshots of
+unreleased versions may be available in repositories listed on the maintainers
+homepage. The current URL of the maintainer homepage can be seen in
+debian/copyright.
+
+
+Source Access
+-------------
+
+You can obtain the sources of this package with:
+
+  $ apt-get source ${PACKAGE}
+
+whereas '${PACKAGE}' has to be replaced with the actual name of the package.
+
+This package is maintained with the Git version control system. The current git
+source tree can be obtained with:
+
+  $ git clone ${GIT_URI}
+
+whereas '${GIT_URI}' has to be replaced with the actual URI for the Git
+repository. The current Git URI can be seen in debian/control in the extracted
+package sources.
+
+More information about Git can be found in the git-core package.
+
+This package may use the Quilt patch system to manage all modifications to the
+upstream source. Changes, if any, are stored in the source package as diffs in
+debian/diff and are applied during the build. Current modifications can be
+applied to the source tree with:
+
+  $ QUILT_PATCHES=debian/patches quilt push -a
+
+More information about Quilt can be found in the quilt package.
diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 0000000..a2c2a44
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,5 @@
+tryton-proteus (1.8.0-1) unstable; urgency=low
+
+  * Initial release.
+
+ -- Mathias Behrle <mathiasb at m9s.biz>  Sat, 15 Jan 2011 15:16:31 +0100
diff --git a/debian/compat b/debian/compat
new file mode 100644
index 0000000..45a4fb7
--- /dev/null
+++ b/debian/compat
@@ -0,0 +1 @@
+8
diff --git a/debian/control b/debian/control
new file mode 100644
index 0000000..554bedb
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,27 @@
+Source: tryton-proteus
+Section: python
+Priority: optional
+Maintainer: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
+Uploaders:
+ Daniel Baumann <daniel at debian.org>,
+ Mathias Behrle <mathiasb at m9s.biz>
+Dm-Upload-Allowed: yes
+Build-Depends: debhelper (>= 8), python, python-setuptools, python-support
+Standards-Version: 3.9.1
+Homepage: http://www.tryton.org/
+Vcs-Browser: http://git.debian-maintainers.org/?p=tryton/tryton-proteus.git
+Vcs-Git: git://git.debian-maintainers.org/git/tryton/tryton-proteus.git
+
+Package: tryton-proteus
+Architecture: all
+Depends:
+ ${misc:Depends}, ${python:Depends}, python-simplejson, python-pkg-resources
+Suggests: tryton-server
+Description: Tryton Application Platform (Proteus)
+ Tryton is a high-level general purpose application platform written in Python
+ and using PostgreSQL as database engine. It is the core base of a complete
+ business solution.
+ .
+ This package contains Proteus, a library to access a Tryton server as a
+ client. This library can access Tryton's models by connecting to a Tryton
+ server via XML-RPC or by using trytond as a module.
diff --git a/debian/copyright b/debian/copyright
new file mode 100644
index 0000000..d242681
--- /dev/null
+++ b/debian/copyright
@@ -0,0 +1,44 @@
+Upstream-Contact: Tryton project <tryton at googlegroups.com>
+Upstream-Homepage: http://downloads.tryton.org/
+Maintainer-Contact: Debian Tryton Maintainers <tryton at lists.debian-maintainers.org>
+Maintainer-Homepage: http://tryton.debian-maintainers.org/
+
+Files: *
+Copyright:
+ (C) 2010 Cedric Krier
+ (C) 2010 B2CK SPRL
+License: GPL-3+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ .
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ .
+ On Debian systems, the complete text of the GNU General Public License
+ can be found in /usr/share/common-licenses/GPL-3 file.
+
+Files: debian/*
+Copyright: (C) 2011 Mathias Behrle <mathiasb at m9s.biz>
+License: GPL-3+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ .
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ .
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ .
+ On Debian systems, the complete text of the GNU General Public License
+ can be found in /usr/share/common-licenses/GPL-3 file.
diff --git a/debian/manpages/proteus.1 b/debian/manpages/proteus.1
new file mode 100644
index 0000000..efe040e
--- /dev/null
+++ b/debian/manpages/proteus.1
@@ -0,0 +1,24 @@
+.TH PROTEUS 1 "2011\-01\-15" "1.8" "Tryton Application Platform"
+
+.SH NAME
+proteus \- Tryton Application Platform (Proteus)
+
+.SH SYNOPSIS
+\fBtryton\fR
+
+.SH DESCRIPTION
+Tryton is a high-level general purpose application platform written in Python and using PostgreSQL as database engine. It is the core base of an ERP.
+
+.SH OPTIONS
+\fBproteus\fR has no options.
+
+.SH SEE ALSO
+\fItrytond\fR(8)
+
+.SH HOMEPAGE
+More information about Tryton Proteus and the Tryton project can be found at <\fIhttp://www.tryton.org/\fR>.
+
+.SH AUTHOR
+Tryton proteus was written by the Tryton project <\fIhttp://www.tryton.org/\fR>.
+.PP
+This manual page was written by Mathias Behrle <\fImathiasb at m9s.biz\fR>, for the Debian project (but may be used by others).
diff --git a/debian/pycompat b/debian/pycompat
new file mode 100644
index 0000000..0cfbf08
--- /dev/null
+++ b/debian/pycompat
@@ -0,0 +1 @@
+2
diff --git a/debian/pyversions b/debian/pyversions
new file mode 100644
index 0000000..b3dc41e
--- /dev/null
+++ b/debian/pyversions
@@ -0,0 +1 @@
+2.5-
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 0000000..000210b
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,4 @@
+#!/usr/bin/make -f
+
+%:
+	dh ${@}
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)
diff --git a/debian/tryton-proteus.examples b/debian/tryton-proteus.examples
new file mode 100644
index 0000000..e845566
--- /dev/null
+++ b/debian/tryton-proteus.examples
@@ -0,0 +1 @@
+README
diff --git a/debian/tryton-proteus.manpages b/debian/tryton-proteus.manpages
new file mode 100644
index 0000000..2fb19fb
--- /dev/null
+++ b/debian/tryton-proteus.manpages
@@ -0,0 +1 @@
+debian/manpages/*
diff --git a/debian/tryton.proteus.links b/debian/tryton.proteus.links
new file mode 100644
index 0000000..32b9a52
--- /dev/null
+++ b/debian/tryton.proteus.links
@@ -0,0 +1,2 @@
+/usr/bin/proteus			/usr/bin/tryton-proteus
+/usr/share/man/man1/proteus.1.gz	/usr/share/man/man1/tryton-proteus.1.gz
diff --git a/proteus.egg-info/PKG-INFO b/proteus.egg-info/PKG-INFO
new file mode 100644
index 0000000..3b0bb9f
--- /dev/null
+++ b/proteus.egg-info/PKG-INFO
@@ -0,0 +1,146 @@
+Metadata-Version: 1.0
+Name: proteus
+Version: 1.8.0
+Summary: Library to access Tryton server as a client
+Home-page: http://www.tryton.org/
+Author: B2CK
+Author-email: info at b2ck.com
+License: GPL-3
+Download-URL: http://downloads.tryton.org/1.8/
+Description: proteus
+        =======
+        
+        A library to access Tryton's models like a client.
+        
+        Installing
+        ----------
+        
+        See INSTALL
+        
+        Example of usage
+        ----------------
+        
+            >>> from proteus import config, Model, Wizard
+        
+        Creating a database
+        ~~~~~~~~~~~~~~~~~~~
+        
+        Configuration to connect to a sqlite memory database using trytond as module.
+        
+            >>> config = config.set_trytond(':memory:', database_type='sqlite')
+        
+        When connecting to a database that doesn't exist, Proteus will create it.
+        
+        Installing a module
+        ~~~~~~~~~~~~~~~~~~~
+        
+        Find the module, call the install button and run the install wizard.
+        
+            >>> Module = Model.get('ir.module.module')
+            >>> (party,) = Module.find([('name', '=', 'party')])
+            >>> Module.button_install([party.id], config.context)
+            >>> Wizard('ir.module.module.install_upgrade').execute('start')
+        
+        Creating a party
+        ~~~~~~~~~~~~~~~~
+        
+        First instanciate a new Party:
+        
+            >>> Party = Model.get('party.party')
+            >>> party = Party()
+            >>> party.id < 0
+            True
+        
+        Fill the fields:
+        
+            >>> party.name = 'ham'
+        
+        Save the instance into the server:
+        
+            >>> party.save()
+            >>> party.name
+            u'ham'
+            >>> party.id > 0
+            True
+        
+        Setting the language of the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        The language on party is a `Many2One` relation field. So it requires to get a
+        `Model` instance as value.
+        
+            >>> Lang = Model.get('ir.lang')
+            >>> (en,) = Lang.find([('code', '=', 'en_US')])
+            >>> party.lang = en
+            >>> party.save()
+            >>> party.lang.code
+            u'en_US'
+        
+        Creating an address for the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        Addresses are store on party with a `One2Many` field. So the new address just
+        needs to be appended to the list `addresses`.
+        
+            >>> Address = Model.get('party.address')
+            >>> address = Address()
+            >>> party.addresses.append(address)
+            >>> party.save()
+            >>> party.addresses #doctest: +ELLIPSIS
+            [proteus.Model.get('party.address')(...)]
+        
+        Adding category to the party
+        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        
+        Categories are linked to party with a `Many2Many` field.
+        
+        So first create a category
+        
+            >>> Category = Model.get('party.category')
+            >>> category = Category()
+            >>> category.name = 'spam'
+            >>> category.save()
+        
+        Append it to categories of the party
+        
+            >>> party.categories.append(category)
+            >>> party.save()
+            >>> party.categories #doctest: +ELLIPSIS
+            [proteus.Model.get('party.category')(...)]
+        
+        Support
+        -------
+        
+        If you encounter any problems with Tryton, please don't hesitate to ask
+        questions on the Tryton bug tracker, mailing list, wiki or IRC channel:
+        
+          http://bugs.tryton.org/
+          http://groups.tryton.org/
+          http://wiki.tryton.org/
+          irc://irc.freenode.net/tryton
+        
+        License
+        -------
+        
+        See LICENSE
+        
+        Copyright
+        ---------
+        
+        See COPYRIGHT
+        
+        
+        For more information please visit the Tryton web site:
+        
+          http://www.tryton.org/
+        
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Plugins
+Classifier: Intended Audience :: Developers
+Classifier: Intended Audience :: Financial and Insurance Industry
+Classifier: Intended Audience :: Legal Industry
+Classifier: License :: OSI Approved :: GNU General Public License (GPL)
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Topic :: Office/Business
diff --git a/proteus.egg-info/SOURCES.txt b/proteus.egg-info/SOURCES.txt
new file mode 100644
index 0000000..c415452
--- /dev/null
+++ b/proteus.egg-info/SOURCES.txt
@@ -0,0 +1,19 @@
+CHANGELOG
+COPYRIGHT
+INSTALL
+LICENSE
+MANIFEST.in
+README
+setup.py
+proteus/__init__.py
+proteus/config.py
+proteus/pyson.py
+proteus.egg-info/PKG-INFO
+proteus.egg-info/SOURCES.txt
+proteus.egg-info/dependency_links.txt
+proteus.egg-info/requires.txt
+proteus.egg-info/top_level.txt
+proteus/tests/__init__.py
+proteus/tests/test_config.py
+proteus/tests/test_model.py
+proteus/tests/test_wizard.py
\ No newline at end of file
diff --git a/proteus.egg-info/dependency_links.txt b/proteus.egg-info/dependency_links.txt
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/proteus.egg-info/dependency_links.txt
@@ -0,0 +1 @@
+
diff --git a/proteus.egg-info/requires.txt b/proteus.egg-info/requires.txt
new file mode 100644
index 0000000..275aecc
--- /dev/null
+++ b/proteus.egg-info/requires.txt
@@ -0,0 +1,4 @@
+
+
+[trytond]
+trytond >= 1.8, < 1.9
\ No newline at end of file
diff --git a/proteus.egg-info/top_level.txt b/proteus.egg-info/top_level.txt
new file mode 100644
index 0000000..aa36ae0
--- /dev/null
+++ b/proteus.egg-info/top_level.txt
@@ -0,0 +1 @@
+proteus
diff --git a/proteus/__init__.py b/proteus/__init__.py
new file mode 100644
index 0000000..aff60a8
--- /dev/null
+++ b/proteus/__init__.py
@@ -0,0 +1,803 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+'''
+A library to access Tryton's models like a client.
+'''
+__version__ = "1.8.0"
+__all__ = ['Model', 'Wizard']
+from types import NoneType
+import threading
+import datetime
+from decimal import Decimal
+import proteus.config
+from proteus.pyson import PYSONDecoder
+
+_MODELS = threading.local()
+
+class _EvalEnvironment(dict):
+    'Dictionary for evaluation'
+    def __init__(self, parent):
+        super(_EvalEnvironment, self).__init__()
+        self.parent = parent
+
+    def __getitem__(self, item):
+        if item == '_parent_' + self.parent._parent_field_name \
+                and self.parent.parent:
+            return _EvalEnvironment(self.parent.parent)
+        return self.parent._get_eval()[item]
+
+    def __getattr__(self, item):
+        return self.__getitem__(item)
+
+    def get(self, item, default=None):
+        try:
+            return self.__getattr__(item)
+        except:
+            pass
+        return super(_EvalEnvironment, self).get(item, default)
+
+    def __nonzero__(self):
+        return True
+
+    def __str__(self):
+        return str(self.parent)
+
+    __repr__ = __str__
+
+    def __contains__(self, item):
+        return item in self.parent._fields
+
+
+class FieldDescriptor(object):
+    default = None
+
+    def __init__(self, name, definition):
+        super(FieldDescriptor, self).__init__()
+        self.name = name
+        self.definition = definition
+
+    def __get__(self, instance, owner):
+        if instance.id > 0 and self.name not in instance._values:
+            instance._read(self.name)
+        return instance._values.get(self.name, self.default)
+
+    def __set__(self, instance, value):
+        if instance.id > 0 and self.name not in instance._values:
+            instance._read(self.name)
+        previous = getattr(instance, self.name)
+        instance._values[self.name] = value
+        if previous != getattr(instance, self.name):
+            instance._changed.add(self.name)
+            instance._on_change(self.name)
+            if instance._parent:
+                instance._parent._changed.add(instance._parent_field_name)
+                instance._parent._on_change(instance._parent_field_name)
+
+
+class BooleanDescriptor(FieldDescriptor):
+    default = False
+
+    def __set__(self, instance, value):
+        assert isinstance(value, bool)
+        super(BooleanDescriptor, self).__set__(instance, value)
+
+
+class CharDescriptor(FieldDescriptor):
+    default = None
+
+    def __set__(self, instance, value):
+        assert isinstance(value, basestring)
+        super(CharDescriptor, self).__set__(instance, value)
+
+
+class IntegerDescriptor(FieldDescriptor):
+    default = 0
+
+    def __set__(self, instance, value):
+        assert isinstance(value, (int, long))
+        super(IntegerDescriptor, self).__set__(instance, value)
+
+
+class FloatDescriptor(FieldDescriptor):
+    default = 0.0
+
+    def __set__(self, instance, value):
+        assert isinstance(value, float)
+        super(FloatDescriptor, self).__set__(instance, value)
+
+
+class NumericDescriptor(FieldDescriptor):
+    default = Decimal('0.0')
+
+    def __set__(self, instance, value):
+        assert isinstance(value, Decimal)
+        # TODO add digits validation
+        super(NumericDescriptor, self).__set__(instance, value)
+
+
+class ReferenceDescriptor(FieldDescriptor):
+    def __get__(self, instance, owner):
+        value = super(ReferenceDescriptor, self).__get__(instance, owner)
+        if isinstance(value, basestring):
+            model_name, id = value.split(',', 1)
+            if model_name:
+                relation = Model.get(model_name, instance._config)
+                value = relation(int(id))
+                instance._values[self.name] = value
+        return value
+
+    def __set__(self, instance, value):
+        assert isinstance(value, (Model, NoneType, basestring))
+        if isinstance(value, basestring):
+            assert value.startswith(',')
+        elif isinstance(value, Model):
+            assert value.id > 0 and not value._changed
+            assert value._config == instance._config
+        super(ReferenceDescriptor, self).__set__(instance, value)
+
+
+class DateDescriptor(FieldDescriptor):
+    def __get__(self, instance, owner):
+        value = super(DateDescriptor, self).__get__(instance, owner)
+        if isinstance(value, datetime.datetime):
+            value = value.date()
+            instance._values[self.name] = value
+        return value
+
+    def __set__(self, instance, value):
+        assert isinstance(value, datetime.date)
+        super(DateDescriptor, self).__set__(instance, value)
+
+
+class DateTimeDescriptor(FieldDescriptor):
+    def __set__(self, instance, value):
+        assert isinstance(value, datetime.datetime)
+        super(DateTimeDescriptor, self).__set_(instance, value)
+
+
+class Many2OneDescriptor(FieldDescriptor):
+    def __get__(self, instance, owner):
+        relation = Model.get(self.definition['relation'], instance._config)
+        value = super(Many2OneDescriptor, self).__get__(instance, owner)
+        if isinstance(value, (int, long)) and value is not False:
+            value = relation(value)
+        elif not value:
+            value = None
+        instance._values[self.name] = value
+        return value
+
+    def __set__(self, instance, value):
+        assert isinstance(value, (Model, NoneType))
+        if value:
+            assert value.id > 0 and not value._changed
+            assert value._config == instance._config
+        super(Many2OneDescriptor, self).__set__(instance, value)
+
+
+class One2ManyDescriptor(FieldDescriptor):
+    default = []
+
+    def __get__(self, instance, owner):
+        relation = Model.get(self.definition['relation'], instance._config)
+        value = super(One2ManyDescriptor, self).__get__(instance, owner)
+        if not isinstance(value, ModelList):
+            value = ModelList((relation(id)
+                for id in value or []), instance, self.name,
+                self.definition.get('relation_field'))
+            instance._values[self.name] = value
+        return value
+
+    def __set__(self, instance, value):
+        raise AttributeError
+
+
+class Many2ManyDescriptor(One2ManyDescriptor):
+    pass
+
+
+class ValueDescriptor(object):
+    def __init__(self, name, definition):
+        super(ValueDescriptor, self).__init__()
+        self.name = name
+        self.definition = definition
+
+    def __get__(self, instance, owner):
+        return getattr(instance, self.name)
+
+
+class ReferenceValueDescriptor(ValueDescriptor):
+    def __get__(self, instance, owner):
+        value = super(ReferenceValueDescriptor, self).__get__(instance, owner)
+        if isinstance(value, Model):
+            value = '%s,%s' % (value.__class__.__name__, value.id)
+        return value or False
+
+
+class Many2OneValueDescriptor(ValueDescriptor):
+    def __get__(self, instance, owner):
+        value = super(Many2OneValueDescriptor, self).__get__(instance, owner)
+        return value and value.id or False
+
+
+class One2ManyValueDescriptor(ValueDescriptor):
+    def __get__(self, instance, owner):
+        value = [('add', [])]
+        value_list = getattr(instance, self.name)
+        for record in value_list:
+            if record.id > 0:
+                if record._changed:
+                    value.append(('write', record.id, record._get_values(
+                        fields=record._changed)))
+                value[0][1].append(record.id)
+            else:
+                value.append(('create', record._get_values(
+                    fields=record._changed)))
+        if value_list.record_removed:
+            value.append(('unlink', [x.id for x in value_list.record_removed]))
+        if value_list.record_deleted:
+            value.append(('delete', [x.id for x in value_list.record_deleted]))
+        return value
+
+
+class Many2ManyValueDescriptor(One2ManyValueDescriptor):
+    pass
+
+
+class EvalDescriptor(object):
+    def __init__(self, name, definition):
+        super(EvalDescriptor, self).__init__()
+        self.name = name
+        self.definition = definition
+
+    def __get__(self, instance, owner):
+        return getattr(instance, self.name)
+
+
+class ReferenceEvalDescriptor(EvalDescriptor):
+    def __get__(self, instance, owner):
+        value = super(ReferenceEvalDescriptor, self).__get__(instance, owner)
+        if isinstance(value, Model):
+            value = '%s,%s' % (value.__class__.__name__, value.id)
+        return value or False
+
+
+class Many2OneEvalDescriptor(EvalDescriptor):
+    def __get__(self, instance, owner):
+        value = super(Many2OneEvalDescriptor, self).__get__(instance, owner)
+        if value:
+            return value.id
+        return False
+
+
+class One2ManyEvalDescriptor(EvalDescriptor):
+    def __get__(self, instance, owner):
+        return [x.id for x in getattr(instance, self.name)]
+
+
+class Many2ManyEvalDescriptor(One2ManyEvalDescriptor):
+    pass
+
+
+class MetaModelFactory(object):
+    descriptors = {
+        'boolean': BooleanDescriptor,
+        'char': CharDescriptor,
+        'text': CharDescriptor,
+        'sha': CharDescriptor,
+        'binary': CharDescriptor,
+        'selection': CharDescriptor, # TODO implement its own descriptor
+        'integer': IntegerDescriptor,
+        'biginteger': IntegerDescriptor,
+        'float': FloatDescriptor,
+        'float_time': FloatDescriptor,
+        'numeric': NumericDescriptor,
+        'reference': ReferenceDescriptor,
+        'date': DateDescriptor,
+        'datetime': DateTimeDescriptor,
+        'many2one': Many2OneDescriptor,
+        'one2many': One2ManyDescriptor,
+        'many2many': Many2ManyDescriptor,
+    }
+    value_descriptors = {
+        'reference': ReferenceValueDescriptor,
+        'many2one': Many2OneValueDescriptor,
+        'one2many': One2ManyValueDescriptor,
+        'many2many': Many2ManyValueDescriptor,
+    }
+    eval_descriptors = {
+        'reference': ReferenceEvalDescriptor,
+        'many2one': Many2OneEvalDescriptor,
+        'one2many': One2ManyEvalDescriptor,
+        'many2many': Many2ManyEvalDescriptor,
+    }
+
+    def __init__(self, model_name, config=None):
+        super(MetaModelFactory, self).__init__()
+        self.model_name = model_name
+        self.config = config or proteus.config.get_config()
+
+    def __call__(self):
+        models_key = 'c%s' % id(self.config)
+        if not hasattr(_MODELS, models_key):
+            setattr(_MODELS, models_key, {})
+        class MetaModel(type):
+            'Meta class for Model'
+            def __new__(mcs, name, bases, dict):
+                if self.model_name in getattr(_MODELS, models_key):
+                    return getattr(_MODELS, models_key)[self.model_name]
+                proxy = self.config.get_proxy(self.model_name)
+                context = self.config.context
+                name = self.model_name
+                dict['_proxy'] = proxy
+                dict['_config'] = self.config
+                dict['_fields'] = proxy.fields_get(None, context)
+                for field_name, definition in dict['_fields'].iteritems():
+                    if field_name == 'id':
+                        continue
+                    Descriptor = self.descriptors[definition['type']]
+                    dict[field_name] = Descriptor(field_name, definition)
+                    VDescriptor = self.value_descriptors.get(
+                            definition['type'], ValueDescriptor)
+                    dict['__%s_value' % field_name] = VDescriptor(
+                            field_name, definition)
+                    EDescriptor = self.eval_descriptors.get(
+                            definition['type'], EvalDescriptor)
+                    dict['__%s_eval' % field_name] = EDescriptor(
+                            field_name, definition)
+                for method in self.config.get_proxy_methods(self.model_name):
+                    setattr(mcs, method, getattr(proxy, method))
+                res = type.__new__(mcs, name, bases, dict)
+                getattr(_MODELS, models_key)[self.model_name] = res
+                return res
+            __new__.__doc__ = type.__new__.__doc__
+        return MetaModel
+
+
+class ModelList(list):
+    'List for Model'
+
+    def __init__(self, sequence=None, parent=None, parent_field_name='',
+            parent_name=''):
+        if sequence is None:
+            sequence = []
+        self.parent = parent
+        if parent:
+            assert parent_field_name
+        self.parent_field_name = parent_field_name
+        self.parent_name = parent_name
+        self.record_removed = set()
+        self.record_deleted = set()
+        result = super(ModelList, self).__init__(sequence)
+        for record in self:
+            record._parent = parent
+            record._parent_field_name = parent_field_name
+            record._parent_name = parent_name
+        return result
+    __init__.__doc__ = list.__init__.__doc__
+
+    def _changed(self):
+        'Signal change to parent'
+        if self.parent:
+            self.parent._changed.add(self.parent_field_name)
+            self.parent._on_change(self.parent_field_name)
+
+    def append(self, record):
+        assert isinstance(record, Model)
+        if self.parent:
+            assert record._config == self.parent._config
+        elif self:
+            assert record._config == self[0]._config
+        assert record._parent is None
+        assert not record._parent_field_name
+        assert not record._parent_name
+        record._parent = self.parent
+        record._parent_field_name = self.parent_field_name
+        record._parent_name = self.parent_name
+        res = super(ModelList, self).append(record)
+        self._changed()
+        return res
+    append.__doc__ = list.append.__doc__
+
+    def extend(self, iterable):
+        iterable = list(iterable)
+        config = None
+        for record in iterable:
+            assert isinstance(record, Model)
+            if self.parent:
+                assert record._config == self.parent._config
+            elif self:
+                assert record._config == self[0]._config
+            elif config:
+                assert record._config == config
+            else:
+                config = record._config
+        for record in iterable:
+            assert record._parent is None
+            assert not record._parent_field_name
+            assert not record._parent_name
+            record._parent = self.parent
+            record._parent_field_name = self.parent_field_name
+            record._parent_name = self.parent_name
+        res = super(ModelList, self).extend(iterable)
+        self._changed()
+        return res
+    extend.__doc__ = list.extend.__doc__
+
+    def insert(self, index, record):
+        raise NotImplementedError
+    insert.__doc__ = list.insert.__doc__
+
+    def pop(self, index=-1):
+        self.record_removed.add(self[index])
+        self[index]._parent = None
+        self[index]._parent_field_name = None
+        self[index]._parent_name = None
+        res = super(ModelList, self).pop(index)
+        self._changed()
+        return res
+    pop.__doc__ = list.pop.__doc__
+
+    def remove(self, record):
+        self.record_deleted.add(record)
+        record._parent = None
+        record._parent_field_name = None
+        record._parent_name = None
+        res = super(ModelList, self).remove(record)
+        self._changed()
+        return res
+    remove.__doc__ = list.remove.__doc__
+
+    def reverse(self):
+        raise NotImplementedError
+    reverse.__doc__ = list.reverse.__doc__
+
+    def sort(self):
+        raise NotImplementedError
+    sort.__doc__ = list.sort.__doc__
+
+
+class Model(object):
+    'Model class for Tryton records'
+
+    __counter = -1
+    _proxy = None
+    _config = None
+    _fields = None
+
+    def __init__(self, id=None, **kwargs):
+        super(Model, self).__init__()
+        if id:
+            assert not kwargs
+        self.__id = id or Model.__counter
+        if self.__id < 0:
+            Model.__counter -= 1
+        self._values = {} # store the values of fields
+        self._changed = set() # store the changed fields
+        self._parent = None # store the parent record
+        self._parent_field_name = '' # store the field name in parent record
+        self._parent_name = '' # store the field name to parent record
+        if self.id < 0:
+            self._default_get()
+
+        for field_name, value in kwargs.iteritems():
+            definition = self._fields[field_name]
+            if definition['type'] in ('one2many', 'many2many'):
+                relation = Model.get(definition['relation'])
+                value = [isinstance(x, (int, long)) and relation(x) or x
+                        for x in value]
+                getattr(self, field_name).extend(value)
+            else:
+                if (definition['type'] == 'many2one'
+                        and isinstance(value, (int, long))):
+                    relation = Model.get(definition['relation'])
+                    value = relation(value)
+                setattr(self, field_name, value)
+    __init__.__doc__ = object.__init__.__doc__
+
+    @classmethod
+    def get(cls, name, config=None):
+        'Get a class for the named Model'
+        class Spam(Model):
+            __metaclass__ = MetaModelFactory(name, config=config)()
+        return Spam
+
+    @classmethod
+    def reset(cls, config=None, *names):
+        'Reset class definition for Models named'
+        config = config or proteus.config.get_config()
+        models_key = 'c%s' % id(config)
+        if not names:
+            setattr(_MODELS, models_key, {})
+        else:
+            models = getattr(_MODELS, models_key, {})
+            for name in names:
+                del models[name]
+
+    def __str__(self):
+        return '<%s(%d)>' % (self.__class__.__name__, self.id)
+    __str__.__doc__ = object.__str__.__doc__
+
+    def __repr__(self):
+        if self._config == proteus.config.get_config():
+            return "proteus.Model.get('%s')(%d)" % (self.__class__.__name__,
+                    self.id)
+        return "proteus.Model.get('%s', %s)(%d)" % (self.__class__.__name__,
+                repr(self._config), self.id)
+    __repr__.__doc__ = object.__repr__.__doc__
+
+    def __cmp__(self, other):
+        'Compare with other'
+        if isinstance(other, Model):
+            return cmp(self.id, other.id)
+        if isinstance(other, (bool, NoneType)):
+            return 1
+        raise NotImplementedError
+
+    @property
+    def id(self):
+        'The unique ID'
+        return self.__id
+
+    @classmethod
+    def find(cls, condition=None, offset=0, limit=None, order=None):
+        'Return records matching condition'
+        if condition is None:
+            condition = []
+        ids = cls._proxy.search(condition, offset, limit, order,
+                cls._config.context)
+        return [cls(id) for id in ids]
+
+    def reload(self):
+        'Reload record'
+        self._values = {}
+        self._changed = set()
+
+    def save(self):
+        'Save the record'
+        context = self._config.context
+        if self.id < 0:
+            values = self._get_values(fields=self._changed)
+            self.__id = self._proxy.create(values, context)
+        else:
+            if not self._changed:
+                return
+            values = self._get_values(fields=self._changed)
+            context['_timestamp'] = self._get_timestamp()
+            self._proxy.write(self.id, values, context)
+        self.reload()
+
+    def delete(self):
+        'Delete the record'
+        if self.id > 0:
+            context = self._config.context
+            context['_timestamp'] = self._get_timestamp()
+            return self._proxy.delete(self.id, context)
+        self.reload()
+        return True
+
+    def _get_values(self, fields=None):
+        'Return dictionary values'
+        if fields is None:
+            fields = self._values.keys()
+        return dict((x, getattr(self, '__%s_value' % x)) for x in fields
+                if x not in ('id', '_timestamp'))
+
+    @property
+    def _timestamp(self):
+        'Get _timestamp'
+        return self._values.get('_timestamp')
+
+    def _get_timestamp(self):
+        'Return dictionary with timestamps'
+        result = {'%s,%s' % (self.__class__.__name__, self.id):
+                self._timestamp}
+        for field, definition in self._fields.iteritems():
+            if field not in self._values:
+                continue
+            if definition['type'] in ('one2many', 'many2many'):
+                for record in getattr(self, field):
+                    result.update(record._get_timestamp())
+        return result
+
+    def _read(self, name):
+        'Read field'
+        fields = []
+        if not self._values:
+            fields = [x for x, y in self._fields.iteritems()
+                    if y['type'] not in ('one2many', 'many2many', 'binary')]
+            fields.append('_timestamp')
+        fields.append(name)
+        self._values.update(self._proxy.read(self.id, fields,
+            self._config.context))
+
+    def _default_get(self):
+        'Set default values'
+        fields = self._fields.keys()
+        self._default_set(self._proxy.default_get(fields, False,
+            self._config.context))
+
+    def _default_set(self, values):
+        for field, value in values.iteritems():
+            definition = self._fields[field]
+            if definition['type'] in ('one2many', 'many2many'):
+                if value and len(value) and isinstance(value[0], (int, long)):
+                    self._values[field] = value
+                    continue
+                relation = Model.get(definition['relation'], self._config)
+                records = []
+                for vals in (value or []):
+                    record = relation()
+                    record._default_set(vals)
+                    records.append(record)
+                self._values[field] = ModelList(records, self, field,
+                        definition.get('relation_field', ''))
+            else:
+                self._values[field] = value
+
+    def _get_eval(self):
+        values = dict((x, getattr(self, '__%s_eval' % x))
+                for x in self._fields if x != 'id')
+        values['id'] = self.id
+        return values
+
+    def _on_change_args(self, args):
+        res = {}
+        values = self._get_eval()
+        del values['id']
+        for field, definition in self._fields.iteritems():
+            if definition['type'] in ('one2many', 'many2many'):
+                values[field] = [x._get_eval() for x in getattr(self, field)]
+        if self._parent:
+            values['_parent_%s' % self._parent_name] = \
+                    _EvalEnvironment(self._parent)
+        for arg in args:
+            scope = values
+            for i in arg.split('.'):
+                if i not in scope:
+                    scope = False
+                    break
+                scope = scope[i]
+            res[arg] = scope
+        return res
+
+    def _on_change_set(self, field, value):
+        if self._fields[field]['type'] in ('one2many', 'many2many'):
+            if isinstance(value, (list, tuple)):
+                self._values[field] = value
+                self._changed.add(field)
+                return
+            to_remove = []
+            if value and value.get('remove'):
+                for record_id in value['remove']:
+                    for record in getattr(self, field):
+                        if record.id == record_id:
+                            to_remove.append(record)
+            for record in to_remove:
+                # remove without signal
+                list.remove(getattr(self, field), record)
+            if value and value.get('add') or value.get('update'):
+                for vals in value.get('add', []):
+                    relation = Model.get(self._fields[field]['relation'],
+                            self._config)
+                    # append without signal
+                    list.append(getattr(self, field), relation(**vals))
+                for vals in value.get('update', []):
+                    if 'id' not in vals:
+                        continue
+                    for record in getattr(self, field):
+                        if record.id == vals['id']:
+                            for i, j in vals.iteritems():
+                                record._values[i] = j
+                                record._changed.add(i)
+        else:
+            self._values[field] = value
+            self._changed.add(field)
+
+    def _on_change(self, name):
+        'Call on_change for field'
+        definition = self._fields[name]
+        if definition.get('on_change'):
+            if isinstance(definition['on_change'], basestring):
+                definition['on_change'] = PYSONDecoder().decode(
+                        definition['on_change'])
+            args = self._on_change_args(definition['on_change'])
+            context = self._config.context
+            res = getattr(self._proxy, 'on_change_%s' % name)(args, context)
+            later = {}
+            for field, value in res.iteritems():
+                if field not in self._fields:
+                    continue
+                if self._fields[field]['type'] in ('one2many', 'many2many'):
+                    later[field] = value
+                    continue
+                self._on_change_set(field, value)
+            for field, value in later.iteritems():
+                self._on_change_set(field, value)
+            if self._parent:
+                self._parent._changed.add(self._parent_field_name)
+        if definition.get('change_default'):
+            context = self._config.context
+            default = Model.get('ir.default', config=self._config)
+            self._default_set(default.get_default(self.__class__.__name__,
+                '%s=%s' % (name, self._get_values([name])[name]), context))
+        for field, definition in self._fields.iteritems():
+            if not definition.get('on_change_with'):
+                continue
+            if name not in definition['on_change_with']:
+                continue
+            if field == name:
+                continue
+            args = self._on_change_args(definition['on_change_with'])
+            context = self._config.context
+            res = getattr(self._proxy, 'on_change_with_%s' % field)(args,
+                    context)
+            self._on_change_set(field, res)
+
+
+class Wizard(object):
+    'Wizard class for Tryton wizards'
+
+    def __init__(self, name, models=None, config=None, context=None):
+        if models:
+            assert len(set(type(x) for x in models)) == 1
+        super(Wizard, self).__init__()
+        self.name = name
+        self.state = None
+        self.states = ['init']
+        self.form = None
+        self._config = config or proteus.config.get_config()
+        self._context = context or {}
+        self._proxy = self._config.get_proxy(name, type='wizard')
+        self.id = self._proxy.create(self._config.context)
+        if models:
+            self.datas = {
+                    'model': models[0].__class__.__name__,
+                    'id': models[0].id,
+                    'ids': [model.id for model in models]
+                    }
+        else:
+            self.datas = {}
+        self.execute('init')
+
+    def execute(self, state):
+        assert state in self.states
+
+        if 'form' not in self.datas:
+            self.datas['form'] = {}
+
+        if self.form:
+            self.datas['form'].update(self.form._get_values())
+
+        self.state = state
+        while self.state != 'end':
+            ctx = self._context.copy()
+            ctx.update(self._config.context)
+            ctx['active_id'] = self.datas.get('id')
+            ctx['active_ids'] = self.datas.get('ids')
+
+            res = self._proxy.execute(self.id, self.datas, self.state, ctx)
+            if not res:
+                break
+
+            if 'datas' in res:
+                self.datas['form'] = res['datas']
+            elif res['type'] == 'form':
+                self.datas['form'] = {}
+
+            if res['type'] == 'form':
+                self.states = [x[0] for x in res['state']]
+                # XXX set context
+                self.form = Model.get(res['object'])()
+                self.form._default_set(self.datas['form'])
+                return
+            elif res['type'] == 'action':
+                # TODO run action
+                self.state = res['state']
+            elif res['type'] == 'print':
+                # TODO run print
+                self.state = res['state']
+            elif res['type'] == 'state':
+                self.state = res['state']
+
+        if self.state == 'end':
+            self._proxy.delete(self.id, self._config.context)
diff --git a/proteus/config.py b/proteus/config.py
new file mode 100644
index 0000000..6a7b2a6
--- /dev/null
+++ b/proteus/config.py
@@ -0,0 +1,209 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+"""
+Configuration functions for the proteus package for Tryton.
+"""
+from __future__ import with_statement
+__all__ = ['set_trytond', 'set_xmlrpc', 'get_config']
+import xmlrpclib
+import threading
+from decimal import Decimal
+from types import NoneType
+import datetime
+
+def dump_decimal(self, value, write):
+    write("<value><double>")
+    write(str(value))
+    write("</double></value>\n")
+
+xmlrpclib.Marshaller.dispatch[Decimal] = dump_decimal
+xmlrpclib.Marshaller.dispatch[datetime.date] = \
+        lambda self, value, write: self.dump_datetime(
+                datetime.datetime.combine(value, datetime.time()), write)
+
+_CONFIG = threading.local()
+
+
+class Config(object):
+    'Config interface'
+
+    def __init__(self):
+        super(Config, self).__init__()
+        self._context = {}
+
+    @property
+    def context(self):
+        return self._context.copy()
+
+    def get_proxy(self, name):
+        raise NotImplementedError
+
+    def get_proxy_methods(self, name):
+        raise NotImplementedError
+
+    def __eq__(self, other):
+        if isinstance(other, Config):
+            return repr(self) == repr(other)
+        return NotImplemented
+
+
+class _TrytondMethod(object):
+
+    def __init__(self, name, model, config):
+        super(_TrytondMethod, self).__init__()
+        self._name = name
+        self._object = model
+        self._config = config
+
+    def __call__(self, *args):
+        from trytond.cache import Cache
+        from trytond.transaction import Transaction
+
+        assert self._name in self._object._rpc
+
+        with Transaction().start(self._config.database_name,
+                self._config.user) as transaction:
+            Cache.clean(self._config.database_name)
+            args = list(args)
+            context = args.pop()
+            if '_timestamp' in context:
+                transaction.timestamp = context['_timestamp']
+                del context['_timestamp']
+            transaction.context = context
+            res = getattr(self._object, self._name)(*args)
+            if self._object._rpc[self._name]:
+                transaction.cursor.commit()
+        Cache.resets(self._config.database_name)
+        return res
+
+class TrytondProxy(object):
+    'Proxy for function call for trytond'
+
+    def __init__(self, name, config, type='model'):
+        super(TrytondProxy, self).__init__()
+        self._config = config
+        self._object = config.pool.get(name, type=type)
+    __init__.__doc__ = object.__init__.__doc__
+
+    def __getattr__(self, name):
+        'Return attribute value'
+        return _TrytondMethod(name, self._object, self._config)
+
+
+class TrytondConfig(Config):
+    'Configuration for trytond'
+
+    def __init__(self, database_name, user, database_type, language='en_US',
+            password=''):
+        super(TrytondConfig, self).__init__()
+        from trytond.config import CONFIG
+        CONFIG['db_type'] = database_type
+        CONFIG.parse()
+        from trytond.modules import register_classes
+        from trytond.pool import Pool
+        from trytond.backend import Database
+        from trytond.protocols.dispatcher import create
+        from trytond.cache import Cache
+        from trytond.transaction import Transaction
+        self.database_name = database_name
+        self._user = user
+        self.database_type = database_type
+
+        register_classes()
+
+        database = Database().connect()
+        cursor = database.cursor()
+        try:
+            databases = database.list(cursor)
+        finally:
+            cursor.close()
+        if database_name not in databases:
+            create(database_name, CONFIG['admin_passwd'], language, password)
+
+        database_list = Pool.database_list()
+        self.pool = Pool(database_name)
+        if database_name not in database_list:
+            self.pool.init()
+
+        with Transaction().start(self.database_name, 0) as transaction:
+            Cache.clean(database_name)
+            user_obj = self.pool.get('res.user')
+            transaction.context = self.context
+            self.user = user_obj.search([
+                ('login', '=', user),
+                ], limit=1)[0]
+            with transaction.set_user(self.user):
+                self._context = user_obj.get_preferences(context_only=True)
+        Cache.resets(database_name)
+    __init__.__doc__ = object.__init__.__doc__
+
+    def __repr__(self):
+        return "proteus.config.TrytondConfig('%s', '%s', '%s')" % (
+                self.database_name, self._user, self.database_type)
+    __repr__.__doc__ = object.__repr__.__doc__
+
+    def get_proxy(self, name, type='model'):
+        'Return Proxy class'
+        return TrytondProxy(name, self, type=type)
+
+    def get_proxy_methods(self, name, type='model'):
+        'Return list of methods'
+        proxy = self.get_proxy(name, type=type)
+        return [x for x in proxy._object._rpc]
+
+def set_trytond(database_name, user='admin', database_type='postgresql',
+        language='en_US', password=''):
+    'Set trytond package as backend'
+    _CONFIG.current = TrytondConfig(database_name, user, database_type,
+            language=language, password=password)
+    return _CONFIG.current
+
+
+class XmlrpcProxy(object):
+    'Proxy for function call for XML-RPC'
+
+    def __init__(self, name, config, type='model'):
+        super(XmlrpcProxy, self).__init__()
+        self._config = config
+        self._object = getattr(config.server, '%s.%s' % (type, name))
+    __init__.__doc__ = object.__init__.__doc__
+
+    def __getattr__(self, name):
+        'Return attribute value'
+        return getattr(self._object, name)
+
+class XmlrpcConfig(Config):
+    'Configuration for XML-RPC'
+
+    def __init__(self, url):
+        super(XmlrpcConfig, self).__init__()
+        self.url = url
+        self.server = xmlrpclib.ServerProxy(url, allow_none=1, use_datetime=1)
+        # TODO add user
+        self._context = self.server.model.res.user.get_preferences(True, {})
+    __init__.__doc__ = object.__init__.__doc__
+
+    def __repr__(self):
+        return "proteus.config.XmlrpcConfig('%s')" % self.url
+    __repr__.__doc__ = object.__repr__.__doc__
+
+    def get_proxy(self, name, type='model'):
+        'Return Proxy class'
+        return XmlrpcProxy(name, self, type=type)
+
+    def get_proxy_methods(self, name, type='model'):
+        'Return list of methods'
+        object_ = '%s.%s' % (type, name)
+        return [x[len(object_) + 1:]
+                for x in self.server.system.listMethods()
+                if x.startswith(object_)
+                and '.' not in x[len(object_) + 1:]]
+
+def set_xmlrpc(url):
+    'Set XML-RPC as backend'
+    _CONFIG.current = XmlrpcConfig(url)
+    return _CONFIG.current
+
+def get_config():
+    # TODO raise exception if not set
+    return _CONFIG.current
diff --git a/proteus/pyson.py b/proteus/pyson.py
new file mode 100644
index 0000000..5eca3cb
--- /dev/null
+++ b/proteus/pyson.py
@@ -0,0 +1,494 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+__all__ = ['PYSONEncoder', 'PYSONDecoder', 'Eval', 'Not', 'Bool', 'And', 'Or',
+        'Equal', 'Greater', 'Less', 'If', 'Get', 'In', 'Date', 'DateTime']
+import sys
+if sys.version_info < (2, 6):
+    import simplejson as json
+else:
+    import json
+import datetime
+
+
+class PYSON(object):
+
+    def pyson(self):
+        raise NotImplementedError
+
+    def types(self):
+        raise NotImplementedError
+
+    @staticmethod
+    def eval(dct, context):
+        raise NotImplementedError
+
+
+class PYSONEncoder(json.JSONEncoder):
+
+    def default(self, obj):
+        if isinstance(obj, PYSON):
+            return obj.pyson()
+        elif isinstance(obj, datetime.date):
+            if isinstance(obj, datetime.datetime):
+                return DateTime(obj.year, obj.month, obj.day,
+                        obj.hour, obj.minute, obj.second, obj.microsecond
+                        ).pyson()
+            else:
+                return Date(obj.year, obj.month, obj.day).pyson()
+        return super(PYSONEncoder, self).default(obj)
+
+
+class PYSONDecoder(json.JSONDecoder):
+
+    def __init__(self, context=None):
+        self.__context = context or {}
+        super(PYSONDecoder, self).__init__(object_hook=self._object_hook)
+
+    def _object_hook(self, dct):
+        if '__class__' in dct:
+            klass = globals().get(dct['__class__'])
+            if klass and hasattr(klass, 'eval'):
+                return klass.eval(dct, self.__context)
+        return dct
+
+
+class Eval(PYSON):
+
+    def __init__(self, value, default=''):
+        super(Eval, self).__init__()
+        self._value = value
+        self._default = default
+
+    def pyson(self):
+        return {
+            '__class__': 'Eval',
+            'v': self._value,
+            'd': self._default,
+            }
+
+    def types(self):
+        if isinstance(self._default, PYSON):
+            return self._default.types()
+        else:
+            return set([type(self._default)])
+
+    @staticmethod
+    def eval(dct, context):
+        return context.get(dct['v'], dct['d'])
+
+
+class Not(PYSON):
+
+    def __init__(self, value):
+        super(Not, self).__init__()
+        if isinstance(value, PYSON):
+            assert value.types() == set([bool]), 'value must be boolean'
+        else:
+            assert isinstance(value, bool), 'value must be boolean'
+        self._value = value
+
+    def pyson(self):
+        return {
+            '__class__': 'Not',
+            'v': self._value,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        return not dct['v']
+
+
+class Bool(PYSON):
+
+    def __init__(self, value):
+        super(Bool, self).__init__()
+        self._value = value
+
+    def pyson(self):
+        return {
+            '__class__': 'Bool',
+            'v': self._value,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        return bool(dct['v'])
+
+
+class And(PYSON):
+
+    def __init__(self, *statements):
+        super(And, self).__init__()
+        for statement in statements:
+            if isinstance(statement, PYSON):
+                assert statement.types() == set([bool]), \
+                        'statement must be boolean'
+            else:
+                assert isinstance(statement, bool), \
+                        'statement must be boolean'
+        assert len(statements) >= 2, 'must have at least 2 statements'
+        self._statements = statements
+
+    def pyson(self):
+        return {
+            '__class__': 'And',
+            's': self._statements,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        return bool(reduce(lambda x, y: x and y, dct['s']))
+
+
+class Or(And):
+
+    def pyson(self):
+        res = super(Or, self).pyson()
+        res['__class__'] = 'Or'
+        return res
+
+    @staticmethod
+    def eval(dct, context):
+        return bool(reduce(lambda x, y: x or y, dct['s']))
+
+
+class Equal(PYSON):
+
+    def __init__(self, statement1, statement2):
+        super(Equal, self).__init__()
+        if isinstance(statement1, PYSON):
+            types1 = statement1.types()
+        else:
+            types1 = set([type(statement1)])
+        if isinstance(statement2, PYSON):
+            types2 = statement2.types()
+        else:
+            types2 = set([type(statement2)])
+        assert types1 == types2, 'statements must have the same type'
+        self._statement1 = statement1
+        self._statement2 = statement2
+
+    def pyson(self):
+        return {
+            '__class__': 'Equal',
+            's1': self._statement1,
+            's2': self._statement2,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        return dct['s1'] == dct['s2']
+
+
+class Greater(PYSON):
+
+    def __init__(self, statement1, statement2, equal=False):
+        super(Greater, self).__init__()
+        for i in (statement1, statement2):
+            if isinstance(i, PYSON):
+                assert i.types().issubset(set([int, long, float])), \
+                        'statement must be an integer or a float'
+            else:
+                assert isinstance(i, (int, long, float)), \
+                        'statement must be an integer or a float'
+        if isinstance(equal, PYSON):
+            assert equal.types() == set([bool])
+        else:
+            assert isinstance(equal, bool)
+        self._statement1 = statement1
+        self._statement2 = statement2
+        self._equal = equal
+
+    def pyson(self):
+        return {
+            '__class__': 'Greater',
+            's1': self._statement1,
+            's2': self._statement2,
+            'e': self._equal,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        if dct['e']:
+            return dct['s1'] >= dct['s2']
+        else:
+            return dct['s1'] > dct['s2']
+
+
+class Less(Greater):
+
+    def pyson(self):
+        res = super(Less, self).pyson()
+        res['__class__'] = 'Less'
+        return res
+
+    @staticmethod
+    def eval(dct, context):
+        if dct['e']:
+            return dct['s1'] <= dct['s2']
+        else:
+            return dct['s1'] < dct['s2']
+
+
+class If(PYSON):
+
+    def __init__(self, condition, then_statement, else_statement=None):
+        super(If, self).__init__()
+        if isinstance(condition, PYSON):
+            assert condition.types() == set([bool]), 'condition must be boolean'
+        else:
+            assert isinstance(condition, bool), 'condition must be boolean'
+        if isinstance(then_statement, PYSON):
+            then_types = then_statement.types()
+        else:
+            then_types = set([type(then_statement)])
+        if isinstance(else_statement, PYSON):
+            assert then_types == else_statement.types(), \
+                    'then and else statements must be the same type'
+        else:
+            assert then_types == set([type(else_statement)]), \
+                    'then and else statements must be the same type'
+        self._condition = condition
+        self._then_statement = then_statement
+        self._else_statement = else_statement
+
+    def pyson(self):
+        return {
+            '__class__': 'If',
+            'c': self._condition,
+            't': self._then_statement,
+            'e': self._else_statement,
+            }
+
+    def types(self):
+        if isinstance(self._then_statement, PYSON):
+            return self._then_statement.types()
+        else:
+            return set([type(self._then_statement)])
+
+    @staticmethod
+    def eval(dct, context):
+        if dct['c']:
+            return dct['t']
+        else:
+            return dct['e']
+
+
+class Get(PYSON):
+
+    def __init__(self, obj, key, default=''):
+        super(Get, self).__init__()
+        if isinstance(obj, PYSON):
+            assert obj.types() == set([dict]), 'obj must be a dict'
+        else:
+            assert isinstance(obj, dict), 'obj must be a dict'
+        self._obj = obj
+        if isinstance(key, PYSON):
+            assert key.types() == set([str]), 'key must be a string'
+        else:
+            assert type(key) == str, 'key must be a string'
+        self._key = key
+        self._default = default
+
+    def pyson(self):
+        return {
+            '__class__': 'Get',
+            'v': self._obj,
+            'k': self._key,
+            'd': self._default,
+            }
+
+    def types(self):
+        if isinstance(self._default, PYSON):
+            return self._default.types()
+        else:
+            return set([type(self._default)])
+
+    @staticmethod
+    def eval(dct, context):
+        return dct['v'].get(dct['k'], dct['d'])
+
+
+class In(PYSON):
+
+    def __init__(self, key, obj):
+        super(In, self).__init__()
+        if isinstance(key, PYSON):
+            assert key.types().issubset(set([str, int, long])), \
+                    'key must be a string or an integer or a long'
+        else:
+            assert type(key) in [str, int, long], \
+                    'key must be a string or an integer or a long'
+        if isinstance(obj, PYSON):
+            assert obj.types().issubset(set([dict, list])), \
+                    'obj must be a dict or a list'
+            if obj.types() == set([dict]):
+                assert type(key) == str, 'key must be a string'
+        else:
+            assert type(obj) in [dict, list]
+            if type(obj) == dict:
+                assert type(key) == str, 'key must be a string'
+        self._key = key
+        self._obj = obj
+
+    def pyson(self):
+        return {
+            '__class__': 'In',
+            'k': self._key,
+            'v': self._obj,
+            }
+
+    def types(self):
+        return set([bool])
+
+    @staticmethod
+    def eval(dct, context):
+        return dct['k'] in dct['v']
+
+
+class Date(PYSON):
+
+    def __init__(self, year=None, month=None, day=None,
+            delta_years=0, delta_months=0, delta_days=0):
+        super(Date, self).__init__()
+        for i in (year, month, day, delta_years, delta_months, delta_days):
+            if isinstance(i, PYSON):
+                assert i.types().issubset(set([int, long, type(None)])), \
+                        '%s must be an integer or None' % (i,)
+            else:
+                assert isinstance(i, (int, long, type(None))), \
+                        '%s must be an integer or None' % (i,)
+        self._year = year
+        self._month = month
+        self._day = day
+        self._delta_years = delta_years
+        self._delta_months = delta_months
+        self._delta_days = delta_days
+
+    def pyson(self):
+        return {
+            '__class__': 'Date',
+            'y': self._year,
+            'M': self._month,
+            'd': self._day,
+            'dy': self._delta_years,
+            'dM': self._delta_months,
+            'dd': self._delta_days,
+            }
+
+    def types(self):
+        return set([datetime.date])
+
+    @staticmethod
+    def eval(dct, context):
+        date = datetime.date.today()
+        replace = {}
+        for i, j in (('y', 'year'), ('M', 'month'), ('d', 'day')):
+            if dct[i] is not None:
+                replace[j] = dct[i]
+        date = date.replace(**replace)
+        if dct['dy']:
+            year = date.year + dct['dy']
+            date = date.replace(year=year)
+        if dct['dM']:
+            month = date.month + dct['dM']
+            year = date.year + month / 12
+            month = month % 12
+            date = date.replace(year=year, month=month)
+        if dct['dd']:
+            date += datetime.timedelta(days=dct['dd'])
+        return date
+
+
+class DateTime(Date):
+
+    def __init__(self, year=None, month=None, day=None,
+            hour=None, minute=None, second=None, microsecond=None,
+            delta_years=0, delta_months=0, delta_days=0,
+            delta_hours=0, delta_minutes=0, delta_seconds=0,
+            delta_microseconds=0):
+        super(DateTime, self).__init__(year=year, month=month, day=day,
+                delta_years=delta_years, delta_months=delta_months,
+                delta_days=delta_days)
+        for i in (hour, minute, second, microsecond,
+                delta_hours, delta_minutes, delta_seconds, delta_microseconds):
+            if isinstance(i, PYSON):
+                assert i.types() == set([int, long, type(None)]), \
+                        '%s must be an integer or None' % (i,)
+            else:
+                assert isinstance(i, (int, long, type(None))), \
+                        '%s must be an integer or None' % (i,)
+        self._hour = hour
+        self._minute = minute
+        self._second = second
+        self._microsecond = microsecond
+        self._delta_hours = delta_hours
+        self._delta_minutes = delta_minutes
+        self._delta_seconds = delta_seconds
+        self._delta_microseconds = delta_microseconds
+
+    def pyson(self):
+        res = super(DateTime, self).pyson()
+        res['__class__'] = 'DateTime'
+        res['h'] = self._hour
+        res['m'] = self._minute
+        res['s'] = self._second
+        res['ms'] = self._microsecond
+        res['dh'] = self._delta_hours
+        res['dm'] = self._delta_minutes
+        res['ds'] = self._delta_seconds
+        res['dms'] = self._delta_microseconds
+        return res
+
+    def types(self):
+        return set([datetime.datetime])
+
+    @staticmethod
+    def eval(dct, context):
+        date = Date.eval(dct, context)
+        datetime_ = datetime.datetime.combine(date,
+                datetime.datetime.now().time())
+        replace = {}
+        for i, j in (('h', 'hour'), ('m', 'minute'), ('s', 'second'),
+                ('ms', 'microsecond')):
+            if dct[i] is not None:
+                replace[j] = dct[i]
+        datetime_ = datetime_.replace(**replace)
+        delta = {}
+        for i, j in (('dh', 'hours'), ('dm', 'minutes'), ('ds', 'seconds'),
+                ('dms', 'microseconds')):
+            if dct[i]:
+                delta[j] = dct[i]
+        datetime_ += datetime.timedelta(**delta)
+        return datetime_
+
+CONTEXT = {
+    'Eval': Eval,
+    'Not': Not,
+    'Bool': Bool,
+    'And': And,
+    'Or': Or,
+    'Equal': Equal,
+    'Greater': Greater,
+    'Less': Less,
+    'If': If,
+    'Get': Get,
+    'In': In,
+    'Date': Date,
+    'DateTime': DateTime,
+}
diff --git a/proteus/tests/__init__.py b/proteus/tests/__init__.py
new file mode 100644
index 0000000..fe882b9
--- /dev/null
+++ b/proteus/tests/__init__.py
@@ -0,0 +1,26 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+import os
+import sys
+import unittest
+
+def test_suite():
+    suite = unittest.TestSuite()
+    loader = unittest.TestLoader()
+    for filename in os.listdir(os.path.dirname(__file__)):
+        if filename.startswith("test") and filename.endswith(".py"):
+            modname = "proteus.tests." + filename[:-3]
+            __import__(modname)
+            module = sys.modules[modname]
+            suite.addTests(loader.loadTestsFromModule(module))
+    return suite
+
+def main():
+    suite = test_suite()
+    runner = unittest.TextTestRunner()
+    runner.run(suite)
+
+if __name__ == '__main__':
+    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(
+        os.path.abspath(__file__)))))
+    main()
diff --git a/proteus/tests/test_config.py b/proteus/tests/test_config.py
new file mode 100644
index 0000000..7190524
--- /dev/null
+++ b/proteus/tests/test_config.py
@@ -0,0 +1,29 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+from unittest import TestCase
+import proteus.config
+
+
+class TestConfig(TestCase):
+
+    def setUp(self):
+        proteus.config.set_trytond(':memory:', database_type='sqlite')
+
+    def test_proxy(self):
+        config = proteus.config.get_config()
+        user_proxy = config.get_proxy('res.user')
+        user_id = user_proxy.search([('login', '=', 'admin')], 0, 1, None,
+                config.context)[0]
+        self.assert_(user_id == config.user)
+
+    def test_proxy_methods(self):
+        config = proteus.config.get_config()
+        self.assert_('search' in config.get_proxy_methods('res.user'))
+
+    def test_trytond_config_eq(self):
+        config1 = proteus.config.get_config()
+        proteus.config.set_trytond(':memory:', database_type='sqlite')
+        config2 = proteus.config.get_config()
+        self.assertEqual(config1, config2)
+
+        self.assertEqual(config1.__eq__(None), NotImplemented)
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
new file mode 100644
index 0000000..8d1d760
--- /dev/null
+++ b/proteus/tests/test_model.py
@@ -0,0 +1,315 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+from unittest import TestCase
+from proteus import config, Model
+
+
+class TestModel(TestCase):
+
+    def setUp(self):
+        config.set_trytond(':memory:', database_type='sqlite')
+
+    def test_class_cache(self):
+        User1 = Model.get('res.user')
+        User2 = Model.get('res.user')
+        self.assertEqual(id(User1), id(User2))
+
+        Model.reset()
+        User3 = Model.get('res.user')
+        self.assertNotEqual(id(User1), id(User3))
+
+    def test_class_method(self):
+        User = Model.get('res.user')
+        self.assert_(len(User.search([('login', '=', 'admin')], {})))
+
+    def test_find(self):
+        User = Model.get('res.user')
+        admin = User.find([('login', '=', 'admin')])[0]
+        self.assertEqual(admin.login, 'admin')
+
+    def test_many2one(self):
+        User = Model.get('res.user')
+        admin = User.find([('login', '=', 'admin')])[0]
+        self.assert_(isinstance(admin.create_uid, User))
+        try:
+            admin.create_uid = 'test'
+            self.fail()
+        except AssertionError:
+            pass
+        admin.create_uid = admin
+        admin.create_uid = None
+
+    def test_one2many(self):
+        Group = Model.get('res.group')
+        administration = Group.find([('name', '=', 'Administration')])[0]
+        self.assert_(isinstance(administration.model_access, list))
+        self.assert_(isinstance(administration.model_access[0],
+            Model.get('ir.model.access')))
+        try:
+            administration.model_access = []
+            self.fail()
+        except AttributeError:
+            pass
+
+    def test_many2many(self):
+        User = Model.get('res.user')
+        admin = User.find([('login', '=', 'admin')])[0]
+        self.assert_(isinstance(admin.groups, list))
+        self.assert_(isinstance(admin.groups[0],
+            Model.get('res.group')))
+        try:
+            admin.groups = []
+            self.fail()
+        except AttributeError:
+            pass
+
+    # TODO test date
+
+    def test_reference(self):
+        Attachment = Model.get('ir.attachment')
+        User = Model.get('res.user')
+        admin = User.find([('login', '=', 'admin')])[0]
+        attachment = Attachment()
+        attachment.name = 'Test'
+        attachment.resource = admin
+        attachment.save()
+        self.assertEqual(attachment.resource, admin)
+
+    def test_id_counter(self):
+        User = Model.get('res.user')
+        test1 = User()
+        self.assert_(test1.id < 0)
+        test2 = User()
+        self.assert_(test2.id < 0)
+        self.assertNotEqual(test1.id, test2.id)
+
+    def test_init(self):
+        User = Model.get('res.user')
+        self.assertEqual(User(1).id, 1)
+        self.assertEqual(User(name='Foo').name, 'Foo')
+
+        Lang = Model.get('ir.lang')
+        en_US = Lang.find([('code', '=', 'en_US')])[0]
+        self.assertEqual(User(language=en_US).language, en_US)
+        self.assertEqual(User(language=en_US.id).language, en_US)
+
+        Group = Model.get('res.group')
+        groups = Group.find()
+        self.assertEqual(len(User(groups=groups).groups), len(groups))
+        self.assertEqual(len(User(groups=[x.id for x in groups]).groups),
+                len(groups))
+
+    def test_save(self):
+        User = Model.get('res.user')
+        test = User()
+        test.name = 'Test'
+        test.login = 'test'
+        test.save()
+        self.assert_(test.id > 0)
+
+        test = User(test.id)
+        self.assertEqual(test.name, 'Test')
+        self.assertEqual(test.login, 'test')
+        self.assert_(test.active)
+
+        test.signature = 'Test signature'
+        self.assertEqual(test.signature, 'Test signature')
+        test.save()
+        self.assertEqual(test.signature, 'Test signature')
+        test = User(test.id)
+        self.assertEqual(test.signature, 'Test signature')
+
+        Group = Model.get('res.group')
+        test2 = User(name='Test 2', login='test2',
+                groups=[Group(name='Test 2')])
+        test2.save()
+        self.assert_(test2.id > 0)
+        self.assertEqual(test2.name, 'Test 2')
+        self.assertEqual(test2.login, 'test2')
+
+    def test_save_many2one(self):
+        User = Model.get('res.user')
+        test = User()
+        test.name = 'Test save many2one'
+        test.login = 'test_save_many2one'
+        test.save()
+
+        Lang = Model.get('ir.lang')
+        en_US = Lang.find([('code', '=', 'en_US')])[0]
+        test.language = en_US
+        test.save()
+        self.assertEqual(test.language, en_US)
+
+        test.language = None
+        test.save()
+        self.assertFalse(test.language)
+
+    def test_save_one2many(self):
+        Group = Model.get('res.group')
+        group = Group()
+        group.name = 'Test save one2many'
+        group.save()
+
+        ModelAccess = Model.get('ir.model.access')
+        Model_ = Model.get('ir.model')
+        model_access = ModelAccess()
+        model_access.model = Model_.find([('model', '=', 'res.group')])[0]
+        model_access.perm_read = True
+        model_access.perm_write = True
+        model_access.perm_create = True
+        model_access.perm_delete = True
+
+        group.model_access.append(model_access)
+        group.save()
+        self.assertEqual(len(group.model_access), 1)
+
+        model_access_id = group.model_access[0].id
+
+        group.name = 'Test save one2many bis'
+        group.model_access[0].description = 'Test save one2many'
+        group.save()
+        self.assertEqual(group.model_access[0].description,
+                'Test save one2many')
+
+        group.model_access.pop()
+        group.save()
+        self.assertEqual(group.model_access, [])
+        self.assertEqual(len(ModelAccess.find([('id', '=', model_access_id)])),
+                1)
+
+        group.model_access.append(ModelAccess(model_access_id))
+        group.save()
+        self.assertEqual(len(group.model_access), 1)
+
+        group.model_access.remove(group.model_access[0])
+        group.save()
+        self.assertEqual(group.model_access, [])
+        self.assertEqual(len(ModelAccess.find([('id', '=', model_access_id)])),
+                0)
+
+    def test_save_many2many(self):
+        User = Model.get('res.user')
+        test = User()
+        test.name = 'Test save many2many'
+        test.login = 'test_save_many2many'
+        test.save()
+
+        Group = Model.get('res.group')
+        group = Group()
+        group.name = 'Test save many2many'
+        group.save()
+
+        test.groups.append(group)
+        test.save()
+        self.assertEqual(len(test.groups), 1)
+
+        group_id = test.groups[0].id
+
+        test.name = 'Test save many2many bis'
+        test.groups[0].name = 'Test save many2many bis'
+        test.save()
+        self.assertEqual(test.groups[0].name,
+                'Test save many2many bis')
+
+        test.groups.pop()
+        test.save()
+        self.assertEqual(test.groups, [])
+        self.assertEqual(len(Group.find([('id', '=', group_id)])), 1)
+
+        test.groups.append(Group(group_id))
+        test.save()
+        self.assertEqual(len(test.groups), 1)
+
+        test.groups.remove(test.groups[0])
+        test.save()
+        self.assertEqual(test.groups, [])
+        self.assertEqual(len(Group.find([('id', '=', group_id)])), 0)
+
+    def test_cmp(self):
+        User = Model.get('res.user')
+        test = User()
+        test.name = 'Test cmp'
+        test.login = 'test_cmp'
+        test.save()
+        admin1 = User.find([('login', '=', 'admin')])[0]
+        admin2 = User.find([('login', '=', 'admin')])[0]
+
+        self.assertEqual(admin1, admin2)
+        self.assertNotEqual(admin1, test)
+        self.assertNotEqual(admin1, None)
+        self.assertNotEqual(admin1, False)
+
+        self.failUnlessRaises(NotImplementedError, lambda: admin1 == 1)
+
+    def test_default_set(self):
+        User = Model.get('res.user')
+        Group = Model.get('res.group')
+        group_ids = [x.id for x in Group.find()]
+        test = User()
+        test._default_set({
+            'name': 'Test',
+            'groups': group_ids,
+            })
+        self.assertEqual(test.name, 'Test')
+        self.assertEqual([x.id for x in test.groups], group_ids)
+
+        test = User()
+        test._default_set({
+            'name': 'Test',
+            'groups': [
+                {
+                    'name': 'Group 1',
+                },
+                {
+                    'name': 'Group 2',
+                },
+                ],
+            })
+        self.assertEqual(test.name, 'Test')
+        self.assertEqual([x.name for x in test.groups], ['Group 1', 'Group 2'])
+
+    def test_delete(self):
+        User = Model.get('res.user')
+        test = User()
+        test.name = 'Test delete'
+        test.login = 'test delete'
+        test.save()
+        self.assert_(test.delete())
+
+    def test_on_change(self):
+        Trigger = Model.get('ir.trigger')
+
+        trigger = Trigger()
+
+        trigger.on_time = True
+        self.assertEqual(trigger.on_create, False)
+
+        trigger.on_create = True
+        self.assertEqual(trigger.on_time, False)
+
+    def test_on_change_set(self):
+        User = Model.get('res.user')
+        Group = Model.get('res.group')
+
+        test = User()
+        test._on_change_set('name', 'Test')
+        self.assertEqual(test.name, 'Test')
+        group_ids = [x.id for x in Group.find()]
+        test._on_change_set('groups', group_ids)
+        self.assertEqual([x.id for x in test.groups], group_ids)
+
+        test._on_change_set('groups', {'remove': [group_ids[0]]})
+        self.assertEqual([x.id for x in test.groups], group_ids[1:])
+
+        test._on_change_set('groups', {'add': [{
+            'name': 'Bar',
+            }]})
+        self.assert_([x for x in test.groups if x.name == 'Bar'])
+
+        test.groups.extend(Group.find())
+        group = test.groups[0]
+        test._on_change_set('groups', {'update': [{
+            'id': group.id,
+            'name': 'Foo',
+            }]})
+        self.assert_([x for x in test.groups if x.name == 'Foo'])
diff --git a/proteus/tests/test_wizard.py b/proteus/tests/test_wizard.py
new file mode 100644
index 0000000..4541b8a
--- /dev/null
+++ b/proteus/tests/test_wizard.py
@@ -0,0 +1,41 @@
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+from unittest import TestCase
+from proteus import config, Wizard, Model
+
+
+class TestWizard(TestCase):
+
+    def setUp(self):
+        config.set_trytond(':memory:', database_type='sqlite')
+
+    def test_translation_clean(self):
+        translation_clean = Wizard('ir.translation.clean')
+        self.assertEqual(translation_clean.form.__class__.__name__,
+                'ir.translation.clean.init')
+        translation_clean.execute('start')
+
+    def test_translation_export(self):
+        translation_export = Wizard('ir.translation.export')
+        translation_export.form.lang = 'en_US'
+        translation_export.form.module = 'ir'
+        translation_export.execute('start')
+        self.assert_(translation_export.form.file)
+        translation_export.execute('end')
+
+    def test_user_config(self):
+        User = Model.get('res.user')
+
+        user_config = Wizard('res.user.config')
+        user_config.execute('user')
+        user_config.form.name = 'Foo'
+        user_config.form.login = 'foo'
+        user_config.execute('add')
+        self.assertEqual(user_config.form.name, None)
+        self.assertEqual(user_config.form.login, None)
+        user_config.form.name = 'Bar'
+        user_config.form.login = 'bar'
+        user_config.execute('end')
+
+        self.assert_(User.find([('name', '=', 'Foo')]))
+        self.assertFalse(User.find([('name', '=', 'Bar')]))
diff --git a/setup.cfg b/setup.cfg
new file mode 100644
index 0000000..861a9f5
--- /dev/null
+++ b/setup.cfg
@@ -0,0 +1,5 @@
+[egg_info]
+tag_build = 
+tag_date = 0
+tag_svn_revision = 0
+
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..6ed5377
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+#This file is part of Tryton.  The COPYRIGHT file at the top level of
+#this repository contains the full copyright notices and license terms.
+from setuptools import setup, find_packages
+import sys
+import os
+import proteus
+
+major_version, minor_version, _ = proteus.__version__.split('.', 2)
+major_version = int(major_version)
+minor_version = int(minor_version)
+
+SIMPLEJSON = []
+if sys.version_info < (2, 6):
+    SIMPLEJSON = ['simplejson']
+
+def read(fname):
+    return open(os.path.join(os.path.dirname(__file__), fname)).read()
+
+setup(name='proteus',
+    version=proteus.__version__,
+    description='Library to access Tryton server as a client',
+    long_description=read('README'),
+    author='B2CK',
+    author_email='info at b2ck.com',
+    url='http://www.tryton.org/',
+    download_url="http://downloads.tryton.org/" + \
+            proteus.__version__.rsplit('.', 1)[0] + '/',
+    packages=find_packages(),
+    classifiers=[
+        'Development Status :: 5 - Production/Stable',
+        'Environment :: Plugins',
+        'Intended Audience :: Developers',
+        'Intended Audience :: Financial and Insurance Industry',
+        'Intended Audience :: Legal Industry',
+        'License :: OSI Approved :: GNU General Public License (GPL)',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python',
+        'Topic :: Office/Business',
+    ],
+    license='GPL-3',
+    install_requires=SIMPLEJSON,
+    extras_require={
+        'trytond': ['trytond >= %s.%s, < %s.%s' %
+            (major_version, minor_version, major_version, minor_version + 1)],
+    },
+    test_suite='proteus.tests',
+    tests_require=('trytond >= %s.%s, < %s.%s' %
+        (major_version, minor_version, major_version, minor_version + 1))
+)
-- 
tryton-proteus



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