1 files changed, 26 insertions, 0 deletions
diff --git a/src/olpc/datastore/hg_backingstore.py b/src/olpc/datastore/hg_backingstore.py
index 7a4d1ba..dad8987 100644
--- a/src/olpc/datastore/hg_backingstore.py
+++ b/src/olpc/datastore/hg_backingstore.py
@@ -315,6 +315,32 @@ class HgBackingStore(FileBackingStore):
         return open(target, 'rw')
 
 
+    def tags(self, uid, tags):
+        """ apply tags to a version of a document, there are cases
+        where some tags apply to all versions of a document and others
+        where they apply to a specific revision.
+
+        By default tags apply to all revisions but if they end with :0
+        then they are demarked as being version specific
+
+        for example
+
+        >>> ds.tags(uid, "foo bar")
+
+        would mark all instances of uid with the tags foo and bar
+
+        while
+
+        >>> ds.tags(uid, "foo bar:0")
+
+        would mark all instances of this uid with "foo" and this
+        specific instance with "bar". No version changes would be
+        created to any versions using this call.
+        """
+        pass
+    
+        
+
     def checkin(self, props, filelike):
         """create or update the content object, creating a new
         version"""