1 files changed, 45 insertions, 0 deletions
diff --git a/ipalib/backend.py b/ipalib/backend.py
new file mode 100644
index 00000000..b1e15f33
--- /dev/null
+++ b/ipalib/backend.py
@@ -0,0 +1,45 @@
+# Authors:
+#   Jason Gerard DeRose <jderose@redhat.com>
+#
+# Copyright (C) 2008  Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program 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; version 2 only
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+"""
+Base classes for all backed-end plugins.
+"""
+
+import plugable
+
+
+class Backend(plugable.Plugin):
+    """
+    Base class for all backend plugins.
+    """
+
+    __proxy__ = False # Backend plugins are not wrapped in a PluginProxy
+
+
+class Context(plugable.Plugin):
+    """
+    Base class for plugable context components.
+    """
+
+    __proxy__ = False # Backend plugins are not wrapped in a PluginProxy
+
+    def get_value(self):
+        raise NotImplementedError(
+            '%s.get_value()' % self.__class__.__name__
+        )