[imp] multiple inheritancies
[odoo/odoo.git] / bin / osv / osv.py
index 32fdfd1..6f795fe 100644 (file)
@@ -1,22 +1,21 @@
-# -*- encoding: utf-8 -*-
+# -*- coding: utf-8 -*-
 ##############################################################################
-#
-#    OpenERP, Open Source Management Solution  
-#    Copyright (C) 2004-2008 Tiny SPRL (<http://tiny.be>). All Rights Reserved
-#    $Id$
+#    
+#    OpenERP, Open Source Management Solution
+#    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
 #
 #    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.
+#    it under the terms of the GNU Affero 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.
+#    GNU Affero 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/>.
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.     
 #
 ##############################################################################
 
@@ -34,6 +33,8 @@ from psycopg2 import IntegrityError
 from netsvc import Logger, LOG_ERROR
 from tools.misc import UpdateableDict
 
+from tools.translate import _
+
 module_list = []
 module_class_list = {}
 class_pool = {}
@@ -47,9 +48,37 @@ class except_osv(Exception):
         self.args = (exc_type, name)
 
 
+from tools.func import wraps
 class osv_pool(netsvc.Service):
+   
+    def check(f):
+        @wraps(f)
+        def wrapper(self, dbname, *args, **kwargs):
+            try:
+                if not pooler.get_pool(dbname)._ready:
+                    raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
+                return f(self, dbname, *args, **kwargs)
+            except orm.except_orm, inst:
+                self.abortResponse(1, inst.name, 'warning', inst.value)
+            except except_osv, inst:
+                self.abortResponse(1, inst.name, inst.exc_type, inst.value)
+            except IntegrityError, inst:
+                for key in self._sql_error.keys():
+                    if key in inst[0]:
+                        self.abortResponse(1, _('Constraint Error'), 'warning', _(self._sql_error[key]))
+                self.abortResponse(1, 'Integrity Error', 'warning', inst[0])
+            except Exception, e:
+                import traceback, sys
+                tb_s = "".join(traceback.format_exception(*sys.exc_info()))
+                logger = Logger()
+                logger.notifyChannel('web-services', LOG_ERROR, tb_s)
+                raise
+
+        return wrapper
+
 
     def __init__(self):
+        self._ready = False
         self.obj_pool = {}
         self.module_object_list = {}
         self.created = []
@@ -58,47 +87,30 @@ class osv_pool(netsvc.Service):
         self._init = True
         self._init_parent = {}
         netsvc.Service.__init__(self, 'object_proxy', audience='')
-        self.joinGroup('web-services')
-        self.exportMethod(self.exportedMethods)
         self.exportMethod(self.obj_list)
         self.exportMethod(self.exec_workflow)
         self.exportMethod(self.execute)
-        self.exportMethod(self.execute_cr)
 
     def init_set(self, cr, mode):
-        if mode <> self._init:
+        different = mode != self._init
+        if different:
             if mode:
                 self._init_parent = {}
             if not mode:
                 for o in self._init_parent:
                     self.get(o)._parent_store_compute(cr)
             self._init = mode
-            return True
-        return False
-
+        
+        self._ready = True
+        return different
+   
     def execute_cr(self, cr, uid, obj, method, *args, **kw):
-        try:
-            object = pooler.get_pool(cr.dbname).get(obj)
-            if not object:
-                self.abortResponse(1, 'Object Error', 'warning',
-                'Object %s doesn\'t exist' % str(obj))
-            return getattr(object, method)(cr, uid, *args, **kw)
-        except orm.except_orm, inst:
-            self.abortResponse(1, inst.name, 'warning', inst.value)
-        except except_osv, inst:
-            self.abortResponse(1, inst.name, inst.exc_type, inst.value)
-        except IntegrityError, inst:
-            for key in self._sql_error.keys():
-                if key in inst[0]:
-                    self.abortResponse(1, 'Constraint Error', 'warning', self._sql_error[key])
-            self.abortResponse(1, 'Integrity Error', 'warning', inst[0])
-        except Exception, e:
-            import traceback
-            tb_s = reduce(lambda x, y: x+y, traceback.format_exception( sys.exc_type, sys.exc_value, sys.exc_traceback))
-            logger = Logger()
-            logger.notifyChannel('web-services', LOG_ERROR, tb_s)
-            raise
-
+        object = pooler.get_pool(cr.dbname).get(obj)
+        if not object:
+            raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
+        return getattr(object, method)(cr, uid, *args, **kw)
+    
+    @check
     def execute(self, db, uid, obj, method, *args, **kw):
         db, pool = pooler.get_db_and_pool(db)
         cr = db.cursor()
@@ -117,18 +129,16 @@ class osv_pool(netsvc.Service):
         wf_service = netsvc.LocalService("workflow")
         return wf_service.trg_validate(uid, obj, args[0], method, cr)
 
+    @check
     def exec_workflow(self, db, uid, obj, method, *args):
         cr = pooler.get_db(db).cursor()
         try:
             try:
                 res = self.exec_workflow_cr(cr, uid, obj, method, *args)
                 cr.commit()
-            except orm.except_orm, inst:
-                cr.rollback()
-                self.abortResponse(1, inst.name, 'warning', inst.value)
-            except except_osv, inst:
+            except Exception:
                 cr.rollback()
-                self.abortResponse(1, inst.name, inst[0], inst.value)
+                raise
         finally:
             cr.close()
         return res
@@ -148,7 +158,7 @@ class osv_pool(netsvc.Service):
         module = module.split('.')[0][2:]
         self.module_object_list.setdefault(module, []).append(obj_inst)
 
-    # Return False if object does not exist
+    # Return None if object does not exist
     def get(self, name):
         obj = self.obj_pool.get(name, None)
         return obj
@@ -182,9 +192,22 @@ class osv_memory(orm.orm_memory):
     #
     def createInstance(cls, pool, module, cr):
         name = hasattr(cls, '_name') and cls._name or cls._inherit
-        parent_name = hasattr(cls, '_inherit') and cls._inherit
-        if parent_name:
-            print 'Inherit not supported in osv_memory object !'
+        parent_names = hasattr(cls, '_inherit') and cls._inherit
+        if parent_names:
+            for parent_name in ((type(parent_names)==list) and parent_names or [parent_names]):
+                parent_class = pool.get(parent_name).__class__
+                assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
+                nattr = {}
+                for s in ('_columns', '_defaults'):
+                    new = copy.copy(getattr(pool.get(parent_name), s))
+                    if hasattr(new, 'update'):
+                        new.update(cls.__dict__.get(s, {}))
+                    else:
+                        new.extend(cls.__dict__.get(s, []))
+                    nattr[s] = new
+                name = hasattr(cls, '_name') and cls._name or cls._inherit
+                cls = type(name, (cls, parent_class), nattr)
+
         obj = object.__new__(cls)
         obj.__init__(pool, cr)
         return obj
@@ -216,31 +239,32 @@ class osv(orm.orm):
     #       put objects in the pool var
     #
     def createInstance(cls, pool, module, cr):
-        parent_name = hasattr(cls, '_inherit') and cls._inherit
-        if parent_name:
-            parent_class = pool.get(parent_name).__class__
-            assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
-            nattr = {}
-            for s in ('_columns', '_defaults', '_inherits', '_constraints', '_sql_constraints'):
-                new = copy.copy(getattr(pool.get(parent_name), s))
-                if hasattr(new, 'update'):
-                    new.update(cls.__dict__.get(s, {}))
-                else:
-                    if s=='_constraints':
-                        for c in cls.__dict__.get(s, []):
-                            exist = False
-                            for c2 in range(len(new)):
-                                if new[c2][2]==c[2]:
-                                    new[c2] = c
-                                    exist = True
-                                    break
-                            if not exist:
-                                new.append(c)
+        parent_names = hasattr(cls, '_inherit') and cls._inherit
+        if parent_names:
+            for parent_name in ((type(parent_names)==list) and parent_names or [parent_names]):
+                parent_class = pool.get(parent_name).__class__
+                assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
+                nattr = {}
+                for s in ('_columns', '_defaults', '_inherits', '_constraints', '_sql_constraints'):
+                    new = copy.copy(getattr(pool.get(parent_name), s))
+                    if hasattr(new, 'update'):
+                        new.update(cls.__dict__.get(s, {}))
                     else:
-                        new.extend(cls.__dict__.get(s, []))
-                nattr[s] = new
-            name = hasattr(cls, '_name') and cls._name or cls._inherit
-            cls = type(name, (cls, parent_class), nattr)
+                        if s=='_constraints':
+                            for c in cls.__dict__.get(s, []):
+                                exist = False
+                                for c2 in range(len(new)):
+                                    if new[c2][2]==c[2]:
+                                        new[c2] = c
+                                        exist = True
+                                        break
+                                if not exist:
+                                    new.append(c)
+                        else:
+                            new.extend(cls.__dict__.get(s, []))
+                    nattr[s] = new
+                name = hasattr(cls, '_name') and cls._name or cls._inherit
+                cls = type(name, (cls, parent_class), nattr)
         obj = object.__new__(cls)
         obj.__init__(pool, cr)
         return obj
@@ -251,122 +275,5 @@ class osv(orm.orm):
         self.pool = pool
         orm.orm.__init__(self, cr)
 
-
-class Cacheable(object):
-
-    _cache = UpdateableDict()
-
-    def add(self, key, value):
-        self._cache[key] = value
-
-    def invalidate(self, key):
-        del self._cache[key]
-
-    def get(self, key):
-        try:
-            w = self._cache[key]
-            return w
-        except KeyError:
-            return None
-
-    def clear(self):
-        self._cache.clear()
-        self._items = []
-
-
-def filter_dict(d, fields):
-    res = {}
-    for f in fields + ['id']:
-        if f in d:
-            res[f] = d[f]
-    return res
-
-
-class cacheable_osv(osv, Cacheable):
-
-    _relevant = ['lang']
-
-    def __init__(self):
-        super(cacheable_osv, self).__init__()
-
-    def read(self, cr, user, ids, fields=None, context=None, load='_classic_read'):
-        if not fields:
-            fields = []
-        if not context:
-            context = {}
-        fields = fields or self._columns.keys()
-        ctx = [context.get(x, False) for x in self._relevant]
-        result, tofetch = [], []
-        for id in ids:
-            res = self.get(self._name, id, ctx)
-            if not res:
-                tofetch.append(id)
-            else:
-                result.append(filter_dict(res, fields))
-
-        # gen the list of "local" (ie not inherited) fields which are classic or many2one
-        nfields = filter(lambda x: x[1]._classic_write, self._columns.items())
-        # gen the list of inherited fields
-        inherits = map(lambda x: (x[0], x[1][2]), self._inherit_fields.items())
-        # complete the field list with the inherited fields which are classic or many2one
-        nfields += filter(lambda x: x[1]._classic_write, inherits)
-        nfields = [x[0] for x in nfields]
-
-        res = super(cacheable_osv, self).read(cr, user, tofetch, nfields, context, load)
-        for r in res:
-            self.add((self._name, r['id'], ctx), r)
-            result.append(filter_dict(r, fields))
-
-        # Appel de fonction si necessaire
-        tofetch = []
-        for f in fields:
-            if f not in nfields:
-                tofetch.append(f)
-        for f in tofetch:
-            fvals = self._columns[f].get(cr, self, ids, f, user, context=context)
-            for r in result:
-                r[f] = fvals[r['id']]
-
-        # TODO: tri par self._order !!
-        return result
-
-    def invalidate(self, key):
-        del self._cache[key[0]][key[1]]
-
-    def write(self, cr, user, ids, values, context=None):
-        if not context:
-            context = {}
-        for id in ids:
-            self.invalidate((self._name, id))
-        return super(cacheable_osv, self).write(cr, user, ids, values, context)
-
-    def unlink(self, cr, user, ids):
-        self.clear()
-        return super(cacheable_osv, self).unlink(cr, user, ids)
-
-#cacheable_osv = osv
-
-
-#class FakePool(object):
-#   def __init__(self, module):
-#       self.preferred_module = module
-
-#   def get(self, name):
-#       localpool = module_objects_dict.get(self.preferred_module, {'dict': {}})['dict']
-#       if name in localpool:
-#           obj = localpool[name]
-#       else:
-#           obj = pooler.get_pool(cr.dbname).get(name)
-#       return obj
-
-#       fake_pool = self
-#       class fake_class(obj.__class__):
-#           def __init__(self):
-#               super(fake_class, self).__init__()
-#               self.pool = fake_pool
-
-#       return fake_class()
-
-
 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: