--- a/schemas/base.py Thu Jul 23 14:12:34 2009 +0200
+++ b/schemas/base.py Thu Jul 23 14:13:43 2009 +0200
@@ -205,6 +205,29 @@
"""generic relation to link one entity to another"""
symetric = True
+class ExternalUri(EntityType):
+ """a URI representing an object in external data store"""
+ uri = String(required=True, unique=True, maxsize=256,
+ description=_('the URI of the object'))
+
+class same_as(RelationType):
+ """generic relation to specify that an external entity represent the same
+ object as a local one:
+ http://www.w3.org/TR/owl-ref/#sameAs-def
+
+ NOTE: You'll have to explicitly declare which entity types can have a
+ same_as relation
+ """
+ permissions = {
+ 'read': ('managers', 'users', 'guests',),
+ 'add': ('managers', 'users'),
+ 'delete': ('managers', 'owners'),
+ }
+ cardinality = '*1'
+ symetric = True
+ # NOTE: the 'object = ExternalUri' declaration will still be mandatory
+ # in the cube's schema.
+ object = 'ExternalUri'
class CWCache(EntityType):
"""a simple cache entity characterized by a name and