[soc2010/query-refactor] Implement a few methods to the point of test…

…s actually running under mongodb (all failing of course).

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2010/query-refactor@13331 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/mongodb/base.py

@@ -1,5 +1,38 @@
+from pymongo import Connection
+
 from django.db.backends import BaseDatabaseWrapper
+from django.db.backends.signals import connection_created
+from django.contrib.mongodb.creation import DatabaseCreation
+
+
+class DatabaseFeatures(object):
+    interprets_empty_strings_as_nulls = False
+
+
+class DatabaseOperations(object):
+    def max_name_length(self):
+        return 254
+
+    def value_to_db_datetime(self, value):
+        return value
 
 
 class DatabaseWrapper(BaseDatabaseWrapper):
-    pass
+    def __init__(self, *args, **kwargs):
+        super(DatabaseWrapper, self).__init__(*args, **kwargs)
+        self.features = DatabaseFeatures()
+        self.ops = DatabaseOperations()
+        self.creation = DatabaseCreation(self)
+        self._connection = None
+
+    @property
+    def connection(self):
+        if self._connection is None:
+            self._connection = Connection(self.settings_dict["HOST"],
+                self.settings_dict["PORT"] or None)
+            connection_created.send(sender=self.__class__)
+        return self._connection
+
+    def _rollback(self):
+        # TODO: ???
+        pass

django/contrib/mongodb/creation.py

@@ -0,0 +1,20 @@
+from django.db.backends.creation import TEST_DATABASE_PREFIX
+
+
+class DatabaseCreation(object):
+    def __init__(self, connection):
+        self.connection = connection
+
+    def create_test_db(self, verbosity, autoclobber):
+        if self.connection.settings_dict['TEST_NAME']:
+            test_database_name = self.connection.settings_dict['TEST_NAME']
+        else:
+            test_database_name = TEST_DATABASE_PREFIX + self.connection.settings_dict['NAME']
+        self.connection.settings_dict["NAME"] = test_database_name
+        return test_database_name
+
+    def destroy_test_db(self, old_database_name, verbosity=1):
+        if verbosity >= 1:
+            print "Destroying test database '%s'..." % self.connection.alias
+        self.connection.connection.drop_database(self.connection.settings_dict["NAME"])
+        self.connection.settings_dict["NAME"] = old_database_name