Fixed #12702 -- Introduced a common implementation of DatabaseError and IntegrityError, so that database backends can (re)raise common error classes. Thanks for Waldemar Kornewald for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12352 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 13 insertions, 0 deletions

diff --git a/django/db/utils.py b/django/db/utils.py
index fe5d7944aa..00b3568cb0 100644
--- a/django/db/utils.py
+++ b/django/db/utils.py
@@ -7,6 +7,16 @@ from django.utils.importlib import import_module
 
 DEFAULT_DB_ALIAS = 'default'
 
+# Define some exceptions that mirror the PEP249 interface.
+# We will rethrow any backend-specific errors using these
+# common wrappers
+class DatabaseError(Exception):
+    pass
+
+class IntegrityError(DatabaseError):
+    pass
+
+
 def load_backend(backend_name):
     try:
         module = import_module('.base', 'django.db.backends.%s' % backend_name)
@@ -40,9 +50,11 @@ def load_backend(backend_name):
             else:
                 raise # If there's some other error, this must be an error in Django itself.
 
+
 class ConnectionDoesNotExist(Exception):
     pass
 
+
 class ConnectionHandler(object):
     def __init__(self, databases):
         self.databases = databases
@@ -87,6 +99,7 @@ class ConnectionHandler(object):
     def all(self):
         return [self[alias] for alias in self]
 
+
 class ConnectionRouter(object):
     def __init__(self, routers):
         self.routers = []