--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/idavoll/storage.py	Fri Apr 08 10:15:02 2005 +0000
@@ -0,0 +1,85 @@
+from zope.interface import Interface
+
+class Error(Exception):
+    msg = None
+
+class NodeNotFound(Error):
+    pass
+
+
+class NodeExists(Error):
+    pass
+
+
+class IStorage(Interface):
+    """ """
+
+    def get_node(self, node_id):
+        """ """
+
+    def get_node_ids(self):
+        """ """
+
+    def create_node(self, node_id, owner, config = None, type='leaf'):
+        """ """
+
+    def delete_node(self, node_id):
+        """ """
+
+    def get_affiliations(self, entity):
+        """ """
+
+    def get_subscriptions(self, entity):
+        """ """
+
+
+class INode(Interface):
+    """ """
+    def get_type(self):
+        """ """
+
+    def get_configuration(self):
+        """ """
+
+    def get_meta_data(self):
+        """ """
+
+    def set_configuration(self, options):
+        """ """
+
+    def get_affiliation(self, entity):
+        """ """
+
+    def add_subscription(self, subscriber, state):
+        """ """
+
+    def remove_subscription(self, subscriber):
+        """ """
+
+    def get_subscribers(self):
+        """ """
+
+    def is_subscribed(self, subscriber):
+        """ """
+
+
+class ILeafNode(Interface):
+    """ """
+    def store_items(self, items, publisher):
+        """ """
+
+    def remove_items(self, item_ids):
+        """ """
+
+    def get_items(self, max_items=None):
+        """ """
+
+    def get_items_by_id(self, item_ids):
+        """ """
+
+    def purge(self):
+        """ """
+
+
+class ISubscription(Interface):
+    """ """