Examples of org.drools.compiler.compiler.PackageBuilder

org.drools.compiler.compiler.PackageBuilder
This is the main compiler class for parsing and compiling rules and assembling or merging them into a binary Package instance. This can be done by merging into existing binary packages, or totally from source. If you are using the Java dialect the JavaDialectConfiguration will attempt to validate that the specified compiler is in the classpath, using ClassLoader.loasClass(String). If you intented to just Janino sa the compiler you must either overload the compiler property before instantiating this class or the PackageBuilder, or make sure Eclipse is in the classpath, as Eclipse is the default. Normally, a complete package is built using one of the applicable addPackageFromXXX methods. It is however possible to construct a package incrementally by adding individual component parts. When a package is built incrementally package level attributes are cached and applied to Rules subsequently added. Caution should be exercised when using the same PackageBuilder to construct packages from multiple sources as the cached package level attributes will still apply even if the resource added to PackageBuilder does not explicitly include package level attributes.

    @Test
    public void testSerializeWorkingMemoryAndRuleBase3() throws Exception {
        // has the first newStatefulSession after the ruleBase is serialised
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "../test_Serializable.drl" ) );


        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( reader );
        final Package pkg = SerializationHelper.serializeObject( builder.getPackage() );


        assertEquals( 0,
                      builder.getErrors().getErrors().length );


        RuleBase ruleBase = getRuleBase();
        StatefulSession session = ruleBase.newStatefulSession();


        ruleBase.addPackage( pkg );

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    @Test
    public void testSerializeAdd() throws Exception {


        //Create a rulebase, a session, and test it
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1.drl" ) ) );
        Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );
        ruleBase = SerializationHelper.serializeObject( ruleBase );


        StatefulSession session = ruleBase.newStatefulSession();
        List list = new ArrayList();
        session.setGlobal( "list",
                           list );


        InternalFactHandle stilton = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                      10 ) );
        InternalFactHandle brie = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                   10 ) );
        session.fireAllRules();


        assertEquals( list.size(),
                      1 );
        assertEquals( "stilton",
                      list.get( 0 ) );


        // now recreate the rulebase, deserialize the session and test it
        session = SerializationHelper.getSerialisedStatefulSession( session,
                                                                    ruleBase );
        list = (List) session.getGlobal( "list" );


        assertNotNull( list );
        assertEquals( list.size(),
                      1 );
        assertEquals( "stilton",
                      list.get( 0 ) );


        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic3.drl" ) ) );
        pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );


        InternalFactHandle stilton2 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie2 = (InternalFactHandle) session.insert( new Cheese( "brie",

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    @Test
    public void testSerializationOfIndexedWM() throws Exception {
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "../test_Serializable2.drl" ) );


        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( reader );
        final Package pkg = builder.getPackage();


        assertEquals( builder.getErrors().toString(),
                      0,
                      builder.getErrors().getErrors().length );


        RuleBase ruleBase = getRuleBase( pkg );// RuleBaseFactory.newRuleBase();


        Map map = new HashMap();
        map.put( "x",

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    @Test
    public void testSerializeAdd2() throws Exception {


        //Create a rulebase, a session, and test it
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );
        Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );


        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );


        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        session.insert( new Cheese( "brie",
                                    10 ) );
        InternalFactHandle bob = (InternalFactHandle) session.insert( new Person( "bob",
                                                                                  10 ) );


        // fire rules
        session.fireAllRules();
        // check the results are correct
        assertEquals( 1,
                      results.size() );
        assertEquals( stilton1.getObject(),
                      results.get( 0 ) );


        // serialize session and rulebase out
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (AbstractWorkingMemory) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKieBase() );
        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 = (AbstractWorkingMemory) ksession.session;
        session.setGlobalResolver( resolver );


        // dynamically add a new package
        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 ) );
        session.insert( new Cheese( "brie",

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     */
    @Test
    public void testSerializeAdd_newRuleNotFiredForNewData() throws Exception {
        //Create a rulebase, a session, and test it
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );
        Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );


        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );


        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();


        GlobalResolver resolver = session.getGlobalResolver();


        // serialize session and rulebase out
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (AbstractWorkingMemory) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKieBase() );
        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 = (AbstractWorkingMemory) ksession.session;
        session.setGlobalResolver( resolver );


        results = (List) session.getGlobal( "results" );


        builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_1.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",

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     */
    @Test
    public void testSerializeAdd3() throws Exception {
        //Create a rulebase, a session, and test it
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );
        Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );


        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );


        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();


        GlobalResolver resolver = session.getGlobalResolver();


        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (AbstractWorkingMemory) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKieBase() );
        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 = (AbstractWorkingMemory) 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( (AbstractWorkingMemory) session );
        marshaller = MarshallerFactory.newMarshaller( ksession.getKieBase() );
        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 = (AbstractWorkingMemory) 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",

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    @Test
    public void testSerializeAddRemove_NoClassDefFoundError() throws Exception {


        //Create a rulebase, a session, and test it
        RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );
        Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
        ruleBase.addPackage( pkg );


        List results = new ArrayList();
        StatefulSession session = ruleBase.newStatefulSession();
        session.setGlobal( "results",
                           results );


        InternalFactHandle stilton1 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       10 ) );
        InternalFactHandle brie1 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    10 ) );
        session.fireAllRules();


        GlobalResolver resolver = session.getGlobalResolver();


        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        StatefulKnowledgeSessionImpl ksession = new StatefulKnowledgeSessionImpl( (AbstractWorkingMemory) session );
        Marshaller marshaller = MarshallerFactory.newMarshaller( ksession.getKieBase() );
        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 = (AbstractWorkingMemory) 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 ) );

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        try {
            setPrivateKeyProperties();
            setPublicKeyProperties();


            //Compile a package
            PackageBuilder builder = new PackageBuilder();
            builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );


            // Test package serialization/deserialization
            Package pkg = SerializationHelper.serializeObject( builder.getPackage() );


            // Create a rulebase
            RuleBase ruleBase = RuleBaseFactory.newRuleBase();
            ruleBase.addPackage( pkg );

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        try {
            // set only the serialisation properties, but not the deserialization
            setPrivateKeyProperties();


            //Compile a package
            PackageBuilder builder = new PackageBuilder();
            builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );


            try {
                // Test package serialization/deserialization
                Package pkg = SerializationHelper.serializeObject( builder.getPackage() );
                fail( "Deserialisation should have failed." );
            } catch ( Exception e ) {
                // success
            }
        } finally {

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        try {
            // set only the serialisation properties, but not the deserialization
            setPrivateKeyProperties();


            //Compile a package
            PackageBuilder builder = new PackageBuilder();
            builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "../test_Dynamic1_0.drl" ) ) );


            // Create a rulebase
            RuleBase ruleBase = RuleBaseFactory.newRuleBase();
            ruleBase.addPackage( builder.getPackage() );


            // Test rulebase serialization/deserialization
            byte[] serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );


            try {

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Related Classes of org.drools.compiler.compiler.PackageBuilder

org.drools.compiler.builder.impl.KnowledgeBuilderFactoryServiceImpl

org.drools.compiler.CommonTestMethodBase

org.drools.compiler.compiler.xml.XmlPackageReader

org.drools.compiler.integrationtests.ConsequenceOffsetTest

org.drools.compiler.integrationtests.DynamicRulesTest

org.drools.compiler.integrationtests.ExecutionFlowControlTest

org.drools.compiler.integrationtests.FirstOrderLogicTest

org.drools.compiler.integrationtests.KnowledgeBuilderTest

org.drools.compiler.integrationtests.LargeRuleBase

org.drools.compiler.integrationtests.LargeRuleBaseSerializationTest

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