Implemented BaseDatabaseFeatures and changed all code to access it -- connection.features.foo instead of backend.foo

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5974 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/mysql_old/base.py

@@ -4,7 +4,7 @@ MySQL database backend for Django.
 Requires MySQLdb: http://sourceforge.net/projects/mysql-python
 """
 
-from django.db.backends import BaseDatabaseWrapper, BaseDatabaseOperations, util
+from django.db.backends import BaseDatabaseWrapper, BaseDatabaseFeatures, BaseDatabaseOperations, util
 from django.utils.encoding import force_unicode
 try:
     import MySQLdb as Database
@@ -63,6 +63,9 @@ class MysqlDebugWrapper:
         else:
             return getattr(self.cursor, attr)
 
+class DatabaseFeatures(BaseDatabaseFeatures):
+    autoindexes_primary_keys = False
+
 class DatabaseOperations(BaseDatabaseOperations):
     def date_extract_sql(self, lookup_type, field_name):
         # http://dev.mysql.com/doc/mysql/en/date-and-time-functions.html
@@ -126,6 +129,7 @@ class DatabaseOperations(BaseDatabaseOperations):
             return []
 
 class DatabaseWrapper(BaseDatabaseWrapper):
+    features = DatabaseFeatures()
     ops = DatabaseOperations()
 
     def __init__(self, **kwargs):
@@ -194,15 +198,6 @@ class DatabaseWrapper(BaseDatabaseWrapper):
             self.server_version = tuple([int(x) for x in m.groups()])
         return self.server_version
 
-allows_group_by_ordinal = True
-allows_unique_and_pk = True
-autoindexes_primary_keys = False
-needs_datetime_string_cast = True     # MySQLdb requires a typecast for dates
-needs_upper_for_iops = False
-supports_constraints = True
-supports_tablespaces = False
-uses_case_insensitive_names = False
-
 OPERATOR_MAPPING = {
     'exact': '= %s',
     'iexact': 'LIKE %s',