[multi-db] Fixed psycopg2 backend. Removed inheritence from local from all backend DatabaseWrappers.

git-svn-id: http://code.djangoproject.com/svn/django/branches/multiple-db-support@3756 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/ado_mssql/base.py

@@ -47,14 +47,7 @@ def variantToPython(variant, adType):
     return res
 Database.convertVariantToPython = variantToPython
 
-try:
-    # Only exists in Python 2.4+
-    from threading import local
-except ImportError:
-    # Import copy of _thread_local.py from Python 2.4
-    from django.utils._threading_local import local
-
-class DatabaseWrapper(local):
+class DatabaseWrapper(object):
     def __init__(self, settings):
         self.settings = settings
         self.connection = None

django/db/backends/mysql/base.py

@@ -50,14 +50,8 @@ class MysqlDebugWrapper:
         else:
             return getattr(self.cursor, attr)
 
-try:
-    # Only exists in Python 2.4+
-    from threading import local
-except ImportError:
-    # Import copy of _thread_local.py from Python 2.4
-    from django.utils._threading_local import local
 
-class DatabaseWrapper(local):
+class DatabaseWrapper(object):
     def __init__(self, settings):
         self.settings = settings
         self.connection = None

django/db/backends/oracle/base.py

@@ -13,14 +13,7 @@ except ImportError, e:
 
 DatabaseError = Database.Error
 
-try:
-    # Only exists in Python 2.4+
-    from threading import local
-except ImportError:
-    # Import copy of _thread_local.py from Python 2.4
-    from django.utils._threading_local import local
-
-class DatabaseWrapper(local):
+class DatabaseWrapper(object):
     def __init__(self, settings):
         self.settings = settings
         self.connection = None

django/db/backends/postgresql/base.py

@@ -13,14 +13,7 @@ except ImportError, e:
 
 DatabaseError = Database.DatabaseError
 
-try:
-    # Only exists in Python 2.4+
-    from threading import local
-except ImportError:
-    # Import copy of _thread_local.py from Python 2.4
-    from django.utils._threading_local import local
-
-class DatabaseWrapper(local):
+class DatabaseWrapper(object):
     def __init__(self, settings):
         self.settings = settings
         self.connection = None

django/db/backends/postgresql_psycopg2/base.py

@@ -13,20 +13,14 @@ except ImportError, e:
 
 DatabaseError = Database.DatabaseError
 
-try:
-    # Only exists in Python 2.4+
-    from threading import local
-except ImportError:
-    # Import copy of _thread_local.py from Python 2.4
-    from django.utils._threading_local import local
-
-class DatabaseWrapper(local):
-    def __init__(self):
+class DatabaseWrapper(object):
+    def __init__(self, settings):
+        self.settings = settings
         self.connection = None
         self.queries = []
 
     def cursor(self):
-        from django.conf import settings
+        settings = self.settings
         if self.connection is None:
             if settings.DATABASE_NAME == '':
                 from django.core.exceptions import ImproperlyConfigured