Package org.drools.marshalling

Examples of org.drools.marshalling.Marshaller

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        GlobalResolver resolver = session.getGlobalResolver();

        // 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();

        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 );
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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 );

        // dynamically add a new package
        builder = new PackageBuilder();
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        GlobalResolver resolver = session.getGlobalResolver();
       
        // 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();
       
        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" );
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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" );

        InternalFactHandle stilton4 = (InternalFactHandle) session.insert( new Cheese( "stilton",
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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",
                           results );
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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 ) );
                StatefulKnowledgeSession ksession = marshaller.unmarshall( bais,
                                                                           SessionConfiguration.getDefaultInstance(),
                                                                           EnvironmentFactory.newEnvironment() );
                session = (StatefulSession) ((StatefulKnowledgeSessionImpl) ksession).session;
   
                if ( keepReference ) {
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    public byte[] bytes;
   
    public void writeExternal(ObjectOutput out) throws IOException {
        // all we do is create marshall to a byte[] and write to the stream
        StatefulKnowledgeSession ksession = (StatefulKnowledgeSession) getKnowledgeRuntime();
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKnowledgeBase() );
       
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        marshaller.marshall( stream, (StatefulKnowledgeSession) getKnowledgeRuntime() );
        stream.close();
       
        byte[] bytes = stream.toByteArray();
        out.writeInt( bytes.length );
        out.write( bytes );
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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() }   );
                StatefulKnowledgeSession ksession = marshaller.unmarshall( bais,
                                                                           conf,
                                                                           EnvironmentFactory.newEnvironment() );
                session = (StatefulSession) ((StatefulKnowledgeSessionImpl) ksession).session;
   
                if ( keepReference ) {
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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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        GlobalResolver resolver = session.getGlobalResolver();

        // 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();

        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 );
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  • org.drools.integrationtests.marshalling.MarshallingTest
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  • org.drools.integrationtests.ProcessMarchallingTest
  • org.drools.integrationtests.SerializationHelper
  • org.drools.marshalling.util.MarshallingTestUtil
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  • org.drools.reteoo.ReteooStatefulSession
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