lib/active_rdf/federation/federation_manager.rb in activerdf-1.2.2 vs lib/active_rdf/federation/federation_manager.rb in activerdf-1.2.3

@@ -5,9 +5,10 @@
 
 class FederationManager
   # add triple s,p,o to the currently selected write-adapter
   def FederationManager.add(s,p,o)
     # TODO: allow addition of full graphs
+    raise ActiveRdfError, "cannot write without a write-adapter" unless ConnectionPool.write_adapter
     ConnectionPool.write_adapter.add(s,p,o)
   end
 
   # executes read-only queries
   # by distributing query over complete read-pool