[rules-users] Drools and serialize

Hi, I want to serialize a StatefulKnowledgeSession in drools (which have rule and fact) Actually i know how to serialize a KnowledgeBase. Here is my code for serialize a KnowledgeBase: KnowledgeBuilder kBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kBuilder.add( ResourceFactory.newFileResource( "Sample.drl" ), ResourceType.DRL ); if( kBuilder.hasErrors() ){ for( KnowledgeBuilderError err: kBuilder.getErrors() ){ System.err.println( err.toString() ); } throw new IllegalStateException( "DRL errors" ); } KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(); kBase.addKnowledgePackages( kBuilder.getKnowledgePackages() ); OutputStream os = new FileOutputStream( "droolsCompiledFile" ); ObjectOutputStream oos = new ObjectOutputStream( os ); oos.writeObject( kBase ); oos.close(); This work fine, no problem here. Here is my code for serialize a StatefulKnowledgeSession: KnowledgeBuilder kBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kBuilder.add( ResourceFactory.newFileResource( "Sample.drl" ), ResourceType.DRL ); if( kBuilder.hasErrors() ){ for( KnowledgeBuilderError err: kBuilder.getErrors() ){ System.err.println( err.toString() ); } throw new IllegalStateException( "DRL errors" ); } KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(); kBase.addKnowledgePackages( kBuilder.getKnowledgePackages() ); try { KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); Message message = new Message(); message.setMessage("Hello World"); message.setStatus(Message.HELLO); ksession.insert(message); Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase(), new ObjectMarshallingStrategy[]{ MarshallerFactory.newSerializeMarshallingStrategy() } ); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectMarshallingStrategy oms = MarshallerFactory.newIdentityMarshallingStrategy(); marshaller.marshall( baos, ksession ); ObjectOutputStream out = new ObjectOutputStream( baos ); out.writeObject( marshaller ); out.close(); baos.close(); ksession.fireAllRules(); } catch (Throwable t) { t.printStackTrace(); } } But this didn't work. I get always the same error: "java.io.NotSerializableException" I have try to not implement the "marshall" but this didn't work. I don't know what I must do. Can someone help me? Thank. Best regards, Clement Pernot -- View this message in context: http://drools.46999.n3.nabble.com/Drools-and-serialize-tp3161882p3161882.... Sent from the Drools: User forum mailing list archive at Nabble.com.