Merge "db: Remove layer of indirection"

1 files changed, 65 insertions, 0 deletions

diff --git a/heat/db/types.py b/heat/db/types.py
new file mode 100644
index 000000000..d454024c6
--- /dev/null
+++ b/heat/db/types.py
@@ -0,0 +1,65 @@
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from oslo_serialization import jsonutils
+from sqlalchemy.dialects import mysql
+from sqlalchemy import types
+
+
+dumps = jsonutils.dumps
+loads = jsonutils.loads
+
+
+class LongText(types.TypeDecorator):
+
+    impl = types.Text
+    cache_ok = True
+
+    def load_dialect_impl(self, dialect):
+        if dialect.name == 'mysql':
+            return dialect.type_descriptor(mysql.LONGTEXT())
+        else:
+            return self.impl
+
+
+class Json(LongText):
+
+    cache_ok = True
+
+    def process_bind_param(self, value, dialect):
+        return dumps(value)
+
+    def process_result_value(self, value, dialect):
+        if value is None:
+            return None
+        return loads(value)
+
+
+class List(types.TypeDecorator):
+
+    impl = types.Text
+    cache_ok = True
+
+    def load_dialect_impl(self, dialect):
+        if dialect.name == 'mysql':
+            return dialect.type_descriptor(mysql.LONGTEXT())
+        else:
+            return self.impl
+
+    def process_bind_param(self, value, dialect):
+        return dumps(value)
+
+    def process_result_value(self, value, dialect):
+        if value is None:
+            return None
+        return loads(value)