Examples of org.drools.KnowledgeBase

org.drools.KnowledgeBase
The KnowlegeBase is a repository of all the application's knowledge definitions. It will contain rules, processes, functions, type models. The KnowledgeBase itself does not contain data, instead sessions are created from the KnowledgeBase in which data can be inserted and process instances started. Creating the KnowlegeBase can be heavy, where as session creation is very light, so it is recommended that KnowleBase's be cached where possible to allow for repeated session creation. The KnowledgeAgent can be used for this purpose. The KnowledgeBase is created from the KnowledgeBaseFactory, and a KnowledgeBaseConfiguration can be used.
```
 KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); 
```
Create sequential KnowledgeBase using the given ClassLoader.
```
 Properties properties = new Properties(); properties.setProperty( "org.drools.sequential", "true"); KnowledgeBaseConfiguration kbConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(properties, myClassLoader); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(kbConf); 
```
@see org.drools.KnowledgeBaseFactory

        ds1.close();
    }


  public void testLogger1() throws Exception {
        // load the process
        KnowledgeBase kbase = createKnowledgeBase();
        // create a new session
        EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );
        Environment env = KnowledgeBaseFactory.newEnvironment();
        env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
                 emf );

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        log.dispose();
  }
  
  public void testLogger2() {
        // load the process
        KnowledgeBase kbase = createKnowledgeBase();
        // create a new session
        EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );
        Environment env = KnowledgeBaseFactory.newEnvironment();
        env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
                 emf );

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        log.dispose();
  }
  
  public void testLogger3() {
        // load the process
        KnowledgeBase kbase = createKnowledgeBase();
        // create a new session
        EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );
        Environment env = KnowledgeBaseFactory.newEnvironment();
        env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
                 emf );

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        log.dispose();
  }
  
  public void testLogger4() throws Exception {
        // load the process
        KnowledgeBase kbase = createKnowledgeBase();
        // create a new session
        EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );
        Environment env = KnowledgeBaseFactory.newEnvironment();
        env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
                 emf );

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        log.dispose();
  }
  
  public void testLogger4LargeVariable() throws Exception {
        // load the process
        KnowledgeBase kbase = createKnowledgeBase();
        // create a new session
        EntityManagerFactory emf = Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );
        Environment env = KnowledgeBaseFactory.newEnvironment();
        env.set( EnvironmentName.ENTITY_MANAGER_FACTORY,
                 emf );

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    private KnowledgeBase createKnowledgeBase() {
      KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
      kbuilder.add(new ClassPathResource("ruleflow.rf"), ResourceType.DRF);
      kbuilder.add(new ClassPathResource("ruleflow2.rf"), ResourceType.DRF);
      kbuilder.add(new ClassPathResource("ruleflow3.rf"), ResourceType.DRF);
      KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
      kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
        return kbase;
    }

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        ProcessDialectRegistry.getDialect(JavaDialect.ID).addProcess( context );
        javaDialect.compileAll();
        assertEquals( 0, javaDialect.getResults().size() );


        final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        List<KnowledgePackage> packages = new ArrayList<KnowledgePackage>();
        packages.add( new KnowledgePackageImp(pkgBuilder.getPackage()) );
        kbase.addKnowledgePackages( packages );
        final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        ksession.setGlobal( "value", true );


        RuleFlowProcessInstance processInstance = new RuleFlowProcessInstance();
        processInstance.setKnowledgeRuntime( (InternalKnowledgeRuntime) ksession );

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                "    <connection from=\"2\" to=\"3\" />\n" +
                "  </connections>\n" +
                "</process>");
      KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(ResourceFactory.newReaderResource(source), ResourceType.DRF);
    KnowledgeBase kbase = kbuilder.newKnowledgeBase();
    StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
    KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
    TestWorkItemHandler handler = new TestWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", handler);
    // start a new process instance
    ProcessInstance processInstance = (ProcessInstance) ksession.startProcess("org.drools.dynamic");

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                "  </connections>\n" +
                "</process>");
      KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(ResourceFactory.newReaderResource(source), ResourceType.DRF);
    kbuilder.add(ResourceFactory.newReaderResource(source2), ResourceType.DRF);
    KnowledgeBase kbase = kbuilder.newKnowledgeBase();
    StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
    KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
    TestWorkItemHandler handler = new TestWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", handler);
    // start a new process instance
    ProcessInstance processInstance = (ProcessInstance) ksession.startProcess("org.drools.dynamic");

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        builder.build( context,
                       node,
                       descr,
                       null );


        final KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        List<KnowledgePackage> packages = new ArrayList<KnowledgePackage>();
        packages.add( new KnowledgePackageImp(pkgBuilder.getPackage()) );
        kbase.addKnowledgePackages( packages );
        final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        ksession.setGlobal( "value", true );        


        RuleFlowProcessInstance processInstance = new RuleFlowProcessInstance();
        processInstance.setKnowledgeRuntime( (InternalKnowledgeRuntime) ksession );

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