Fixed re-raising of ORA-01400 as an IntegrityError in a way that works on Python 2.3 and 2.4 as well.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8965 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/oracle/base.py

@@ -361,8 +361,8 @@ class FormatStylePlaceholderCursor(Database.Cursor):
             return Database.Cursor.execute(self, query, self._param_generator(params))
         except DatabaseError, e:
             # cx_Oracle <= 4.4.0 wrongly raises a DatabaseError for ORA-01400.
-            if e.message.code == 1400 and type(e) != IntegrityError:
-                e = IntegrityError(e.message)
+            if e.args[0].code == 1400 and not isinstance(e, IntegrityError):
+                e = IntegrityError(e.args[0])
             raise e
 
     def executemany(self, query, params=None):
@@ -384,8 +384,8 @@ class FormatStylePlaceholderCursor(Database.Cursor):
             return Database.Cursor.executemany(self, query, [self._param_generator(p) for p in formatted])
         except DatabaseError, e:
             # cx_Oracle <= 4.4.0 wrongly raises a DatabaseError for ORA-01400.
-            if e.message.code == 1400 and type(e) != IntegrityError:
-                e = IntegrityError(e.message)
+            if e.args[0].code == 1400 and not isinstance(e, IntegrityError):
+                e = IntegrityError(e.args[0])
             raise e
 
     def fetchone(self):