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

1 files changed, 5 insertions, 10 deletions

diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index 96f88dfa17..2ffdefa73e 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -2,7 +2,7 @@
 SQLite3 backend for django.  Requires pysqlite2 (http://pysqlite.org/).
 """
 
-from django.db.backends import BaseDatabaseWrapper, BaseDatabaseOperations, util
+from django.db.backends import BaseDatabaseWrapper, BaseDatabaseFeatures, BaseDatabaseOperations, util
 try:
     try:
         from sqlite3 import dbapi2 as Database
@@ -34,6 +34,9 @@ Database.register_converter("TIMESTAMP", util.typecast_timestamp)
 Database.register_converter("decimal", util.typecast_decimal)
 Database.register_adapter(decimal.Decimal, util.rev_typecast_decimal)
 
+class DatabaseFeatures(BaseDatabaseFeatures):
+    supports_constraints = False
+
 class DatabaseOperations(BaseDatabaseOperations):
     def date_extract_sql(self, lookup_type, field_name):
         # sqlite doesn't support extract, so we fake it with the user-defined
@@ -70,6 +73,7 @@ class DatabaseOperations(BaseDatabaseOperations):
         return sql
 
 class DatabaseWrapper(BaseDatabaseWrapper):
+    features = DatabaseFeatures()
     ops = DatabaseOperations()
 
     def _cursor(self, settings):
@@ -111,15 +115,6 @@ class SQLiteCursorWrapper(Database.Cursor):
     def convert_query(self, query, num_params):
         return query % tuple("?" * num_params)
 
-allows_group_by_ordinal = True
-allows_unique_and_pk = True
-autoindexes_primary_keys = True
-needs_datetime_string_cast = True
-needs_upper_for_iops = False
-supports_constraints = False
-supports_tablespaces = False
-uses_case_insensitive_names = False
-
 def _sqlite_extract(lookup_type, dt):
     try:
         dt = util.typecast_timestamp(dt)