let DummyRelationRegistry use real IntIds if available

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1415 fd906abe-77d9-0310-91a1-e0d9ade77398

relation/registry.py

@@ -24,6 +24,7 @@ $Id$
 
 from persistent import Persistent
 from persistent.interfaces import IPersistent
+from zope import component
 from zope.interface import Interface, Attribute, implements
 from zope.app import zapi
 from zope.app.catalog.catalog import Catalog
@@ -54,7 +55,11 @@ class DummyRelationRegistry(object):
             self.objects.append(relation)
         for attr in ('first', 'second', 'third',):
             value = getattr(relation, attr, None)
-            if value is not None and value not in self.objects:
+            if value is not None:
+                intids = component.queryUtility(IIntIds)
+                if intids is not None:
+                    intids.register(value)
+                elif value not in self.objects:
                     self.objects.append(value)
 
     def unregister(self, relation):
@@ -65,6 +70,9 @@ class DummyRelationRegistry(object):
     def getUniqueIdForObject(self, obj):
         if obj == '*': # wild card
             return '*'
+        intids = component.queryUtility(IIntIds)
+        if intids is not None:
+            return intids.register(obj)
         if obj not in self.objects:
             self.objects.append(obj)
         return self.objects.index(obj)