Hello, I still have a problem loading facts using XStream. The last line of the following code triggers a com.thoughtworks.xstream.mapper.CannotResolveClassException. // load up the knowledge base KnowledgeBase kbase = readKnowledgeBase(); StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession(); // Make the results, in this case the FactHandles, available to the user Action executeResultHandler = PipelineFactory.newExecuteResultHandler(); // Insert the transformed object into the session associated with the PipelineContext KnowledgeRuntimeCommand insertStage = PipelineFactory.newStatefulKnowledgeSessionInsert(); insertStage.setReceiver( executeResultHandler ); // Create the transformer instance and create the Transformer stage, where we are going from Xml to Pojo. XStream xstream = new XStream(); Transformer transformer = PipelineFactory.newXStreamFromXmlTransformer( xstream ); transformer.setReceiver( insertStage ); // Create the start adapter Pipeline for StatefulKnowledgeSessions Pipeline pipeline = PipelineFactory.newStatelessKnowledgeSessionPipeline( ksession ); pipeline.setReceiver( transformer ); // Instantiate a simple result handler and load and insert the XML ResultHandlerImpl resultHandler = new ResultHandlerImpl(); InputStream is = new FileInputStream("D:/workspaces/prise_main_drools/src/main/rules/lproduits.xml"); pipeline.insert( is, resultHandler ); Any idea ? Thank you in advance. Regards, Benoît _________________________________________________________________ Consultez gratuitement vos emails Orange, Gmail, Free, ... directement dans HOTMAIL ! http://www.windowslive.fr/hotmail/agregation/