[jackrabbit][core] Invalid node identifier

[Abhinav Atul]

Hi,
   Is there some way to verify beforehand whether an identifier is a valid node 
identifier without depending on concrete implementations? Or could the 
cause(IllegalArgumentException) be embedded in 
org.apache.jackrabbit.core.SessionImpl#getNodeByIdentifier as below


         } catch (IllegalArgumentException iae) {
-            throw new RepositoryException("invalid identifier: " + id);
+            throw new RepositoryException("invalid identifier: " + id,iae);
         }

Thanks
Abhinav