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>

                System.out.println( "Error: " + error.getMessage() );


            }
            fail("KnowledgeBase did not build");
        }
        KnowledgeBaseConfiguration kbaseConf = remoteN1.get( KnowledgeBaseFactoryService.class ).newKnowledgeBaseConfiguration();
        kbaseConf.setProperty(AssertBehaviorOption.PROPERTY_NAME, "equality");
        KnowledgeBase kbase = remoteN1.get( KnowledgeBaseFactoryService.class ).newKnowledgeBase(kbaseConf);


        assertNotNull( kbase );


        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

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                throw new IllegalStateException("DRL errors");
            }
        }


        // Add the package to a knowledge base (deploy the rule package).
        KnowledgeBaseConfiguration kBaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();


        KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(kBaseConfig);
        kBase.addKnowledgePackages(kBuilder.getKnowledgePackages());
        return kBase;
    }

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        if ( kbuilder.hasErrors() ) {
            System.out.println( kbuilder.getErrors() );
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }


        KnowledgeBaseConfiguration kbaseConf = knowledgeBaseFactoryService.newKnowledgeBaseConfiguration( null,                                                                                                          
                                                                                                          getClass().getClassLoader() );


        KnowledgeBase kbase = knowledgeBaseFactoryService.newKnowledgeBase( kbaseConf );
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

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        KnowledgeBuilderFactoryService knowledgeBuilderFactoryService = registry.get( KnowledgeBuilderFactoryService.class );
        KnowledgeBaseFactoryService knowledgeBaseFactoryService = registry.get( KnowledgeBaseFactoryService.class );
        ResourceFactoryService resourceFactoryService = registry.get( ResourceFactoryService.class );


        KnowledgeBaseConfiguration kbaseConf = knowledgeBaseFactoryService.newKnowledgeBaseConfiguration( null,
                                                                                                          getClass().getClassLoader() );


        System.out.println( "test dtables started" );


        KnowledgeBuilderConfiguration kbConf = knowledgeBuilderFactoryService.newKnowledgeBuilderConfiguration( null,

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        kbuilder.add( ResourceFactory.newClassPathResource( "waltzdb.drl",
                                                                    WaltzDbBenchmark.class ),
                              ResourceType.DRL );
        Collection<KnowledgePackage> pkgs = kbuilder.getKnowledgePackages();


        KnowledgeBaseConfiguration kbaseConfiguration = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kbaseConfiguration.setProperty( "drools.removeIdentities",
                                        "true" );


        final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbaseConfiguration );
        //                final RuleBase ruleBase = RuleBaseFactory.newRuleBase( RuleBase.RETEOO,
        //                                                               conf );

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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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                        .add( newClassPathResource( "ui.drl", getClass() ), DRL ).build();   
        if ( kbuilder.hasErrors() ) {
            throw new RuntimeException( kbuilder.getErrors().toString() );
        }
        
        KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        config.setOption( EventProcessingOption.STREAM );
        
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( config );        
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

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        //Use the following instead of above if you are using a DSL:
        //builder.addPackageFromDrl( source, dsl );


        //add the package to a rulebase (deploy the rule package).
        KnowledgeBaseConfiguration kbaseconfiguration = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kbaseconfiguration.setProperty( "drools.removeIdentities",
                                   "true" );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbaseconfiguration );
        //        RuleBase ruleBase = RuleBaseFactory.newRuleBase( RuleBase.RETEOO,
        //                                                         conf );

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        kbuilder.add( ResourceFactory.newClassPathResource( "waltzdb.drl",
                                                                    WaltzDbBenchmark.class ),
                              ResourceType.DRL );
        Collection<KnowledgePackage> pkgs = kbuilder.getKnowledgePackages();


        KnowledgeBaseConfiguration kbaseConfiguration = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
        kbaseConfiguration.setProperty( "drools.removeIdentities",
                                        "true" );


        final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase( kbaseConfiguration );
        //                final RuleBase ruleBase = RuleBaseFactory.newRuleBase( RuleBase.RETEOO,
        //                                                               conf );

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        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());
        StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession();
        ksession.insert(new A());
        MarshallerFactory.newMarshaller(knowledgeBase).marshall(new ByteArrayOutputStream(), ksession);

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