1 files changed, 64 insertions, 0 deletions
diff --git a/src/mailman/database/types.py b/src/mailman/database/types.py
new file mode 100644
index 000000000..2f901fe49
--- /dev/null
+++ b/src/mailman/database/types.py
@@ -0,0 +1,64 @@
+# Copyright (C) 2007-2009 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Storm type conversions."""
+
+
+from __future__ import absolute_import, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    'Enum',
+    ]
+
+
+import sys
+
+from storm.properties import SimpleProperty
+from storm.variables import Variable
+
+
+
+class _EnumVariable(Variable):
+    """Storm variable."""
+
+    def parse_set(self, value, from_db):
+        if value is None:
+            return None
+        if not from_db:
+            return value
+        path, intvalue = value.rsplit(':', 1)
+        modulename, classname = path.rsplit('.', 1)
+        __import__(modulename)
+        cls = getattr(sys.modules[modulename], classname)
+        return cls[int(intvalue)]
+
+    def parse_get(self, value, to_db):
+        if value is None:
+            return None
+        if not to_db:
+            return value
+        return '{0}.{1}:{2}'.format(
+            value.enumclass.__module__,
+            value.enumclass.__name__,
+            int(value))
+
+
+class Enum(SimpleProperty):
+    """Custom munepy.Enum type for Storm."""
+
+    variable_class = _EnumVariable