# HG changeset patch
# User Ralph Meijer <ralphm@ik.nu>
# Date 1099674239 0
# Node ID e602ddda2d6ed4df9fe8fd1e0b8d1eb4c174e656
# Parent  0947b46c096827f95f01e91ed29eaa6c5ed4ccfe
Implement NodeCreationService, using the create_node() method of Storage.
Replace get_supported_affiliations() by supports_publisher_affiliation() and
supports_outcast_affiliation() in BackendService.
Add supports_persistent_items() in BackendService.

diff -r 0947b46c0968 -r e602ddda2d6e idavoll/backend.py
--- a/idavoll/backend.py	Wed Nov 03 17:27:57 2004 +0000
+++ b/idavoll/backend.py	Fri Nov 05 17:03:59 2004 +0000
@@ -141,8 +141,14 @@
         utility.EventDispatcher.__init__(self)
         self.storage = storage
 
-    def get_supported_affiliations(self):
-        return ['none', 'owner', 'outcast', 'publisher']
+    def supports_publisher_affiliation(self):
+        return True
+
+    def supports_outcast_affiliation(self):
+        return True
+
+    def supports_persistent_items(self):
+        return True
 
 class PublishService(service.Service):
     
@@ -256,3 +262,18 @@
     def _do_unsubscribe(self, result, node_id, subscriber):
         return self.parent.storage.remove_subscription(node_id,
                                                        subscriber.full())
+
+class NodeCreationService(service.Service):
+
+    __implements__ = INodeCreationService,
+
+    def supports_instant_nodes(self):
+        return False
+
+    def create_node(self, node_id, requestor):
+        if not node_id:
+            raise NoInstantNodes
+
+        d = self.parent.storage.create_node(node_id, requestor.full())
+        d.addCallback(lambda _: node_id)
+        return d