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>

        if (kbuilder.hasErrors())
        {
            throw new ConfigurationException(MessageFactory.createStaticMessage("Errors while parsing ruleset defined in file " + rulesFile + " : " + kbuilder.getErrors().toString()));
        }        


        KnowledgeBaseConfiguration conf = 
            KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null, Thread.currentThread().getContextClassLoader());
        if (rules.getConfiguration() != null)
        {
            conf.setOption((KnowledgeBaseOption) rules.getConfiguration());
        }
        else if (rules.isCepMode())
        {
            conf.setOption(EventProcessingOption.STREAM);
        }
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(conf);
        kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());            
        
        if (rules.isStateless())

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    @Ignore
    public void testCompareInstances() throws Exception {


        StatefulKnowledgeSession ksessionA = null;
        {
            KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
            config.setOption(EventProcessingOption.STREAM);
            KnowledgeBase knowledgeBaseA = KnowledgeBaseFactory.newKnowledgeBase(config);
            KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
            ksconf.setOption(ClockTypeOption.get("pseudo"));
            ((SessionConfiguration) ksconf).setTimerJobFactoryManager(new TrackableTimeJobFactoryManager());
            ksessionA = knowledgeBaseA.newStatefulKnowledgeSession(ksconf, null);
        }


        StatefulKnowledgeSession ksessionB = null;
        {
            KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
            config.setOption(EventProcessingOption.STREAM);
            KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase(config);
            KnowledgeSessionConfiguration ksconf = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
            ksconf.setOption(ClockTypeOption.get("pseudo"));
            ((SessionConfiguration) ksconf).setTimerJobFactoryManager(new TrackableTimeJobFactoryManager());
            ksessionB = knowledgeBase.newStatefulKnowledgeSession(ksconf, null);

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        if ( !errors.isEmpty() ) {
            throw new RuntimeException( errors.toString() );
        }


        //KnowledgeBase
        KnowledgeBaseConfiguration kbaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(null, DroolsBlueprintBean.class.getClassLoader());
        KnowledgeBase kbase = node.get( KnowledgeBaseFactoryService.class ).newKnowledgeBase(kbaseConfig);
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        return kbase;
    }

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                throw new InitialisationException(CoreMessages.cannotLoadFromClasspath(rulesFile), this);
            }


            KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();
            builder.add(ResourceFactory.newInputStreamResource(is), ResourceType.DRL);
            KnowledgeBaseConfiguration conf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
            conf.setOption(EventProcessingOption.STREAM);
            KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(conf);
            kbase.addKnowledgePackages(builder.getKnowledgePackages());            
            
            session = kbase.newStatefulKnowledgeSession();

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        KnowledgeBuilder kbuilder =  KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL );
        if ( kbuilder.hasErrors() ) {
            fail( kbuilder.getErrors().toString() );
        }
        KnowledgeBaseConfiguration kbConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
                kbConf.setOption(AssertBehaviorOption.EQUALITY);
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbConf );
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        java.util.List list = new java.util.ArrayList();

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        if ( kbuilder.hasErrors() ) {
            System.out.println( kbuilder.getErrors().toString() );
            System.exit( 1 );
        }


        KnowledgeBaseConfiguration kbaseConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kbaseConf.setOption( AssertBehaviorOption.EQUALITY );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbaseConf );
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        Counter c = new Counter();

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        assertTrue(eps.contains(s3));
    }


    @Test
    public void testEventDoesNotExpireIfNotInPattern() throws Exception {
        KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption(EventProcessingOption.STREAM);
        KnowledgeBase kbase = loadKnowledgeBase("test_EventExpiration.drl",
                kconf);


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

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                equalTo(0));
    }


    @Test
    public void testEventExpirationSetToZero() throws Exception {
        KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption(EventProcessingOption.STREAM);
        KnowledgeBase kbase = loadKnowledgeBase("test_EventExpirationSetToZero.drl",
                kconf);


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

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                ResourceType.DRL);
        kbuilder.add(ResourceFactory.newByteArrayResource(drl2.getBytes()),
                ResourceType.DRL);
        assertFalse(kbuilder.getErrors().toString(),
                kbuilder.hasErrors());
        KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption( EventProcessingOption.STREAM );
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kconf );
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        List<ObjectTypeNode> otns = ( (ReteooRuleBase) ( (KnowledgeBaseImpl) kbase ).getRuleBase() ).getRete().getObjectTypeNodes();
        ObjectType stot = new ClassObjectType( StockTick.class );

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                "    accumulate( $s : StockTick( price > 20 ) from window RedHatTicks,\n" +
                "                $sum : sum( $s.getPrice() ),\n" +
                "                $cnt : count( $s ) )\n" +
                "then\n" +
                "end\n";
        KnowledgeBaseConfiguration kconf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kconf.setOption(EventProcessingOption.STREAM);
        KnowledgeBase kbase = loadKnowledgeBaseFromString(kconf,
                drl);


        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        AgendaEventListener ael = mock(AgendaEventListener.class);

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