Package org.drools.marshalling

Examples of org.drools.marshalling.Marshaller

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            kbase = KnowledgeBaseFactory.newKnowledgeBase();
        }
        ObjectMarshallingStrategy [] strategies
            = new ObjectMarshallingStrategy[] { MarshallerFactory.newSerializeMarshallingStrategy() };
        strategies = addProcessInstanceResolverStrategyIfAvailable(strategies);
        Marshaller marshaller = MarshallerFactory.newMarshaller( kbase, strategies );
   
        // Prepare input for marshaller
        ByteArrayInputStream bais = new ByteArrayInputStream( marshalledData.byteArray );
        SessionConfiguration conf = SessionConfiguration.getDefaultInstance();
        Environment env = EnvironmentFactory.newEnvironment();
   
        // Unmarshall
        StatefulKnowledgeSession ksession = marshaller.unmarshall( bais, conf, env );
       
        return ksession;
    }
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                // so we read it, but we don't need it, so just ignore.
                ReteooStatefulSession rsession = (ReteooStatefulSession) ois.readObject();
   
                // now unmarshall that byte[]
                ByteArrayInputStream bais = new ByteArrayInputStream( rsession.bytes );
                Marshaller marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( this ),  new ObjectMarshallingStrategy[] { MarshallerFactory.newSerializeMarshallingStrategy() }   );
               
                Environment environment = EnvironmentFactory.newEnvironment();
                StatefulKnowledgeSession ksession = marshaller.unmarshall( bais,
                                                                           conf,
                                                                           environment );
                session = (StatefulSession) ((StatefulKnowledgeSessionImpl) ksession).session;
   
                if ( keepReference ) {
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        GlobalResolver resolver = session.getGlobalResolver();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        byte[] serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );

        session.dispose();

        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        session.setGlobalResolver( resolver );
        results = (List) session.getGlobal( "results" );

        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3_0.drl" ) ) );
        pkg = SerializationHelper.serializeObject( builder.getPackage() );

        ruleBase.addPackage( pkg );

        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    20 ) );
        InternalFactHandle bob1 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   20 ) );
        InternalFactHandle bob2 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   30 ) );
        session.fireAllRules();

        assertEquals( 4,
                      results.size() );
        assertEquals( stilton2.getObject(),
                      results.get( 1 ) );
        assertEquals( bob2.getObject(),
                      results.get( 2 ) );
        assertEquals( bob1.getObject(),
                      results.get( 3 ) );

        serializedRulebase = null;

        resolver = session.getGlobalResolver();
        baos = new ByteArrayOutputStream();
        ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );

        session.dispose();

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        session.setGlobalResolver( resolver );
        results = (List) session.getGlobal( "results" );

        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic1_2.drl" ) ) );
        pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );

        InternalFactHandle stilton3 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       40 ) );
        InternalFactHandle brie3 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    40 ) );
        InternalFactHandle bob3 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   40 ) );
        InternalFactHandle bob4 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   40 ) );
        InternalFactHandle addr1 = (InternalFactHandle) session.insert( new Address( "bangalore" ) );
        InternalFactHandle addr2 = (InternalFactHandle) session.insert( new Address( "India" ) );

        session.fireAllRules();

        assertEquals( 9,
                      results.size() );
        assertEquals( stilton3.getObject(),
                      results.get( 4 ) );
        assertEquals( bob4.getObject(),
                      results.get( 5 ) );
        assertEquals( bob3.getObject(),
                      results.get( 6 ) );
        assertEquals( addr2.getObject(),
                      results.get( 7 ) );
        assertEquals( addr1.getObject(),
                      results.get( 8 ) );

        serializedRulebase = null;

        resolver = session.getGlobalResolver();
        baos = new ByteArrayOutputStream();
        ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );
        session.dispose();

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        session.setGlobalResolver( resolver );
        results = (List) session.getGlobal( "results" );
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        GlobalResolver resolver = session.getGlobalResolver();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        byte[] serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );

        session.dispose();

        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        results.clear();
        session.setGlobal( "results",
                           results );

        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_Dynamic3_0.drl" ) ) );
        pkg = SerializationHelper.serializeObject( builder.getPackage() );

        ruleBase.addPackage( pkg );

        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    20 ) );
        InternalFactHandle bob1 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   20 ) );
        InternalFactHandle bob2 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   30 ) );
        session.fireAllRules();

        assertEquals( 3,
                      results.size() );
        assertEquals( stilton2.getObject(),
                      results.get( 0 ) );
        assertEquals( bob2.getObject(),
                      results.get( 1 ) );
        assertEquals( bob1.getObject(),
                      results.get( 2 ) );

        serializedRulebase = null;

        baos = new ByteArrayOutputStream();
        ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );

        session.dispose();

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        results.clear();
        session.setGlobal( "results",
                           results );

        // CASE 1: remove rule
        ruleBase.removeRule( "org.drools.test",
                             "like stilton" );

        InternalFactHandle stilton3 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        InternalFactHandle brie3 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    20 ) );
        InternalFactHandle bob3 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   20 ) );
        InternalFactHandle bob4 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   30 ) );
        session.fireAllRules();

        assertEquals( 2,
                      results.size() );
        assertEquals( bob4.getObject(),
                      results.get( 0 ) );
        assertEquals( bob3.getObject(),
                      results.get( 1 ) );

        // now recreate the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        results.clear();
        session.setGlobal( "results",
                           results );

        // CASE 2: remove pkg
        ruleBase.removePackage( "org.drools.test" );

        InternalFactHandle stilton4 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        InternalFactHandle brie4 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    20 ) );
        InternalFactHandle bob5 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   20 ) );
        InternalFactHandle bob6 = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                   30 ) );
        session.fireAllRules();

        assertEquals( 2,
                      results.size() );
        assertEquals( bob6.getObject(),
                      results.get( 0 ) );
        assertEquals( bob5.getObject(),
                      results.get( 1 ) );

        byte[] serializedSession = null;
        serializedRulebase = null;
        baos = new ByteArrayOutputStream();
        ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();
        serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );

        session.dispose();
        // Deserialize the rulebase and the session
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        results.clear();
        session.setGlobal( "results",
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        assertSame( "these two object references should be same",
                    bob,
                    session.getObjects().iterator().next() );

        Marshaller marshaller = createSerializableMarshaller( knowledgeBase );

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream out = new DroolsObjectOutputStream( baos );
        out.writeObject( bob );
        out.writeObject( knowledgeBase );
        marshaller.marshall( out,
                             session );
        out.flush();
        out.close();

        ObjectInputStream in = new DroolsObjectInputStream( new ByteArrayInputStream( baos.toByteArray() ) );
        Person deserializedBob = (Person) in.readObject();
        knowledgeBase = (KnowledgeBase) in.readObject();
        marshaller = createSerializableMarshaller( knowledgeBase );
        session = marshaller.unmarshall( in );
        assertSame( "these two object references should be same",
                    deserializedBob,
                    session.getObjects().iterator().next() );
        in.close();
    }
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            ksession.insert( t2 );
            ksession.insert( t3 );
            ksession.insert( t4 );

            //ksession.fireAllRules();
            Marshaller marshaller = createSerializableMarshaller( knowledgeBase );
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ObjectOutputStream out = new DroolsObjectOutputStream( baos );
            out.writeObject( knowledgeBase );
            marshaller.marshall( out,
                                 ksession );
            out.flush();
            out.close();

            ObjectInputStream in = new DroolsObjectInputStream( new ByteArrayInputStream( baos.toByteArray() ) );
            knowledgeBase = (KnowledgeBase) in.readObject();
            marshaller = createSerializableMarshaller( knowledgeBase );
            ksession = marshaller.unmarshall( in );
            in.close();

            // setting the global again, since it is not serialized with the session
            List<List> results = (List<List>) new ArrayList<List>();
            ksession.setGlobal( "results",
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        knowledgeBase.addKnowledgePackages(Collections.singleton((KnowledgePackage) impl));
        SessionConfiguration config = new SessionConfiguration();
        config.setClockType(ClockType.PSEUDO_CLOCK);
        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession(config, KnowledgeBaseFactory.newEnvironment());
        PseudoClockScheduler scheduler = ksession.getSessionClock();
        Marshaller marshaller = MarshallerFactory.newMarshaller(knowledgeBase);
       


        ksession.insert("cheese");
        assertTrue(fired.isEmpty());
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        return ksession;
    }
   
    private void readWrite(KnowledgeBase knowledgeBase, StatefulKnowledgeSession ksession, KnowledgeSessionConfiguration config) {
        try {
            Marshaller marshaller = MarshallerFactory.newMarshaller(knowledgeBase);
            ByteArrayOutputStream o = new ByteArrayOutputStream();
            marshaller.marshall(o, ksession);
            ksession = marshaller.unmarshall(new ByteArrayInputStream(o.toByteArray()), config, KnowledgeBaseFactory.newEnvironment());
            ksession.fireAllRules();
            //scheduler = ksession.getSessionClock();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
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    private Marshaller createSerializableMarshaller(KnowledgeBase knowledgeBase) {
        ObjectMarshallingStrategyAcceptor acceptor = MarshallerFactory.newClassFilterAcceptor( new String[]{ "*.*" } );
        ObjectMarshallingStrategy strategy = MarshallerFactory.newSerializeMarshallingStrategy( acceptor );
        Marshaller marshaller = MarshallerFactory.newMarshaller( knowledgeBase,
                                                                 new ObjectMarshallingStrategy[]{ strategy } );
        return marshaller;
    }
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                      results.get( 0 ) );

        // serialize session and rulebase out
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (ReteooStatefulSession) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
        marshaller.marshall( baos,
                             ksession );
        baos.close();

        GlobalResolver resolver = session.getGlobalResolver();
        byte[] serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );
        session.dispose();

        // now deserialize the rulebase, deserialize the session and test it
        ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );

        marshaller = MarshallerFactory.newMarshaller( new KnowledgeBaseImpl( ruleBase ) );
        ksession = (StatefulKnowledgeSessionImpl) marshaller.unmarshall( new ByteArrayInputStream( baos.toByteArray() ),
                                                                         KnowledgeBaseFactory.newKnowledgeSessionConfiguration(),
                                                                         EnvironmentFactory.newEnvironment() );
        session = (ReteooStatefulSession) ksession.session;
        session.setGlobalResolver( resolver );
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Related Classes of org.drools.marshalling.Marshaller

  • org.drools.integrationtests.EventAccessorRestoreTest
  • org.drools.integrationtests.marshalling.MarshallingTest
  • org.drools.integrationtests.MarshallingTest
  • org.drools.integrationtests.Misc2Test
  • org.drools.integrationtests.ProcessMarchallingTest
  • org.drools.integrationtests.SerializationHelper
  • org.drools.marshalling.util.MarshallingTestUtil
  • org.drools.reteoo.ReteooRuleBase
  • org.drools.reteoo.ReteooStatefulSession
  • org.jbpm.integrationtests.ProcessMarshallingTest
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