Package org.drools.core

Examples of org.drools.core.RuleBase

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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",
                                                                                    10 ) );
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        assertEquals( builder.getErrors().toString(),
                      0,
                      builder.getErrors().getErrors().length );

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

        Map map = new HashMap();
        map.put( "x",
                 ruleBase );
        map = SerializationHelper.serializeObject( map );
        ruleBase = (RuleBase) map.get( "x" );
        final Rule[] rules = ruleBase.getPackages()[0].getRules();
        assertEquals( 3,
                      rules.length );

        StatefulSession session = ruleBase.newStatefulSession();

        session.setGlobal( "list",
                           new ArrayList() );

        final Primitives p = new Primitives();
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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",
                                    20 ) );
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     *          Only for old data points having type as 'brie' the new rule got fired.
     */
    @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",
                                                                                    20 ) );
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     *  Works Fine if both the scenarios mentioned above are skipped.
     */
    @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",
                                                                                    40 ) );
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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 ) );
        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( (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;
        results.clear();
        session.setGlobal( "results",
                           results );

        // CASE 1: remove rule
        ruleBase.removeRule( "org.drools.compiler.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 = (AbstractWorkingMemory) ksession.session;
        results.clear();
        session.setGlobal( "results",
                           results );

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

        InternalFactHandle stilton4 = (InternalFactHandle) session.insert( new Cheese( "stilton",
                                                                                       20 ) );
        InternalFactHandle brie4 = (InternalFactHandle) session.insert( new Cheese( "brie",
                                                                                    20 ) );
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            // Test package serialization/deserialization
            Package pkg = SerializationHelper.serializeObject( builder.getPackage() );

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

            // Test rulebase serialization/deserialization
            byte[] serializedRulebase = DroolsStreamUtils.streamOut( ruleBase );
            ruleBase = (RuleBase) DroolsStreamUtils.streamIn( serializedRulebase );
        } finally {
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            //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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        //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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        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new StringReader( rule ) );
        assertTrue( builder.getErrors().isEmpty() );
        final Package pkg = builder.getPackage();

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( pkg );

        // Make sure the rete node map is created correctly
        Map<Integer, BaseNode> nodes = RuleBaseNodes.getNodeMap( (InternalRuleBase) ruleBase );
        assertEquals( 2,
                      nodes.size() );
        assertEquals( "InitialFactImpl",
                      ((ClassObjectType) ((ObjectTypeNode) nodes.get( 2 )).getObjectType()).getClassType().getSimpleName() );
        assertEquals( "Rule 1",
                      ((RuleTerminalNode) nodes.get( 4 )).getRule().getName() );

        StatefulSession session = ruleBase.newStatefulSession();

        List list = new ArrayList();
        session.setGlobal( "list",
                           list );
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  • org.acme.insurance.launcher.PricingRuleLauncher
  • org.drools.compiler.CommonTestMethodBase
  • org.drools.compiler.compiler.QueryBuilderTest
  • org.drools.compiler.compiler.RuleBaseLoader
  • org.drools.compiler.compiler.RuleBaseLoaderTest
  • org.drools.compiler.integrationtests.AccumulateTest
  • org.drools.compiler.integrationtests.DroolsTest
  • org.drools.compiler.integrationtests.DynamicRulesTest
  • org.drools.compiler.integrationtests.eventgenerator.example.ExampleScenario
  • org.drools.compiler.integrationtests.eventgenerator.SimpleEventGeneratorTest
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