Examples of org.drools.KnowledgeBaseConfiguration

org.drools.KnowledgeBaseConfiguration
A class to store KnowledgeBase related configuration. It must be used at KnowledgeBase instantiation time or not used at all.

This class will automatically load default values from a number of places, accumulating properties from each location. This list of locations, in given priority is: System properties, home directory, working directory, META-INF/ of optionally provided classLoader META-INF/ of Thread.currentThread().getContextClassLoader() and META-INF/ of ClassLoader.getSystemClassLoader()

So if you want to set a default configuration value for all your new KnowledgeBase, you can simply set the property as a System property.

After the KnowledgeBase is created, it makes the configuration immutable and there is no way to make it mutable again. This is to avoid inconsistent behaviour inside KnowledgeBase.

The following properties are supported:
- drools.maintainTms = <true|false>
- drools.assertBehaviour = <identity|equality>
- drools.logicalOverride = <discard|preserve>
- drools.sequential = <true|false>
- drools.sequential.agenda = <sequential|dynamic>
- drools.removeIdentities = <true|false>
- drools.shareAlphaNodes = <true|false>
- drools.shareBetaNodes = <true|false>
- drools.alphaNodeHashingThreshold = <1...n>
- drools.compositeKeyDepth = <1..3>
- drools.indexLeftBetaMemory = <true/false>
- drools.indexRightBetaMemory = <true/false>
- drools.consequenceExceptionHandler = <qualified class name>
- drools.maxThreads = <-1|1..n>
- drools.multithreadEvaluation = <true|false>
The follow properties have not yet been migrated from the Drools 4.0 api:
- drools.executorService = <qualified class name>
- drools.conflictResolver = <qualified class name>
- drools.ruleBaseUpdateHandler = <qualified class name>

        kbuilder.add( ResourceFactory.newReaderResource( new StringReader( str ) ),
                      ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        ksconf.setOption( ClockTypeOption.get( "pseudo" ) );

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                      ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }                
        
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        
        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

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                      ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }                
        
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        
        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

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                      ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }                
        
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        
        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

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                      ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }                
        
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        
        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

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    @Test
    public void testEventExpiration4() throws Exception {
        // read in the source
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "test_CEP_EventExpiration4.drl" ) );
        final KnowledgeBaseConfiguration conf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        conf.setOption( EventProcessingOption.STREAM );
        final KnowledgeBase kbase = loadKnowledgeBase( reader,
                                                       conf );


        final KnowledgeSessionConfiguration sconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        sconf.setOption( ClockTypeOption.get( "pseudo" ) );

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    @Test
    public void testBeforeOperator() throws Exception {
        // read in the source
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "test_CEP_BeforeOperator.drl" ) );
        final KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption( EventProcessingOption.STREAM );
        final KnowledgeBase kbase = loadKnowledgeBase( reader,
                                                       kconf );


        KnowledgeSessionConfiguration sconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        sconf.setOption( ClockTypeOption.get( ClockType.PSEUDO_CLOCK.getId() ) );

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    @Test
    public void testMetByOperator() throws Exception {
        // read in the source
        final Reader reader = new InputStreamReader( getClass().getResourceAsStream( "test_CEP_MetByOperator.drl" ) );
        final KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption( EventProcessingOption.STREAM );
        final KnowledgeBase kbase = loadKnowledgeBase( reader,
                                                       kconf );


        KnowledgeSessionConfiguration sconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        sconf.setOption( ClockTypeOption.get( ClockType.PSEUDO_CLOCK.getId() ) );

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        }
    }


    @Test
    public void testCollectWithWindows() throws Exception {
        final KnowledgeBaseConfiguration kbconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kbconf.setOption( EventProcessingOption.STREAM );
        final KnowledgeBase kbase = loadKnowledgeBase( "test_CEP_CollectWithWindows.drl",
                                                       kbconf,
                                                       true );


        KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();

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        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newReaderResource( new StringReader( str ) ),
                      ResourceType.DRL );
        assertFalse( kbuilder.getErrors().toString(),
                     kbuilder.hasErrors() );
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );


        KnowledgeSessionConfiguration sessionConfig = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
        sessionConfig.setOption( ClockTypeOption.get( "pseudo" ) );
        KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase( config );
        knowledgeBase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

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