Examples with KnowledgeBuilder org.drools.builder.KnowledgeBuilder used on opensource projects

Example 36 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder in project jBPM5-Developer-Guide by Salaboy.

the class NewCommonIntegrationPatternsTest method testSimpleDecisionWithReactiveRulesUsingListener.

@Test
public void testSimpleDecisionWithReactiveRulesUsingListener() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("new_common/scoring.drl"), ResourceType.DRL);
    kbuilder.add(new ClassPathResource("new_common/process-drl-decision.bpmn"), ResourceType.BPMN2);
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        fail(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    final StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
    // Uncomment to see all the logs
    // KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession);
    ksession.addEventListener(new DefaultAgendaEventListener() {

        @Override
        public void activationCreated(ActivationCreatedEvent event) {
            System.out.println(">>> Firing All the Rules after activation created! " + event);
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }
    });
    ksession.addEventListener(new DefaultProcessEventListener() {

        @Override
        public void afterProcessStarted(ProcessStartedEvent event) {
            System.out.println(">>> Firing All the Rules after process started! " + event);
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }
    });
    Person person = new Person("Salaboy", 28);
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("person", person);
    ProcessInstance processInstance = ksession.createProcessInstance("com.salaboy.process.SimpleDecision", params);
    ksession.insert(processInstance);
    ksession.insert(person);
    ksession.insert(new RatesToday(3, 5));
    assertEquals(processInstance.getState(), ProcessInstance.STATE_PENDING);
    ksession.startProcessInstance(processInstance.getId());
    assertEquals(84, person.getScore());
    assertEquals(processInstance.getState(), ProcessInstance.STATE_COMPLETED);
}

Example 37 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder in project jBPM5-Developer-Guide by Salaboy.

the class EventsTesterJFrame method createKnowledgeSession.

private StatefulKnowledgeSession createKnowledgeSession() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("simpleEventAnalysis.drl"), ResourceType.DRL);
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(" >>> Error:" + error.getMessage() + "\n");
        }
        throw new IllegalStateException(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
    config.setOption(EventProcessingOption.STREAM);
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config);
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    KnowledgeSessionConfiguration sessionConfig = KnowledgeBaseFactory.newKnowledgeSessionConfiguration();
    sessionConfig.setOption(ClockTypeOption.get("realtime"));
    return kbase.newStatefulKnowledgeSession(sessionConfig, null);
}

Example 38 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder in project jBPM5-Developer-Guide by Salaboy.

the class SessionsPatternsTestsBase method createKnowledgeSession.

/**
 * Creates a new Knowledge Base with the passed resources and returns a fresh
 * ksession from it. This method register the created kbase in {@link #kbases}
 * with the key passed as parameter. The returned session is configured as
 * persistent.
 * @param key the key used to register the generated kbase in {@link #kbases}.
 * @param resources The resources to be placed inside the generated kbase.
 * @return
 */
protected StatefulKnowledgeSession createKnowledgeSession(String key, Map<Resource, ResourceType> resources) {
    // Creates a new kbuilder
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    // Adds al the given resources
    for (Map.Entry<Resource, ResourceType> entry : resources.entrySet()) {
        kbuilder.add(entry.getKey(), entry.getValue());
    }
    // If there is any compilation error then fail!
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        Assert.fail(">>> Knowledge couldn't be parsed! ");
    }
    // Creates a new kbase
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    // Add the generated knowledge packages from kbuilder.
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    // Register the kbase in this.kbases
    kbases.put(key, kbase);
    // Creates a Persistence Knowledge Session
    System.out.println(" >>> Let's create a Persistent Knowledge Session");
    final StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, createEnvironment());
    return ksession;
}

Example 39 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder in project jBPM5-Developer-Guide by Salaboy.

the class PersistentProcessTest method processInstancePersistentTest.

@Test
public void processInstancePersistentTest() throws Exception {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("process-async-interactions.bpmn"), ResourceType.BPMN2);
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        fail(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    Environment env = EnvironmentFactory.newEnvironment();
    EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.runtime");
    env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);
    env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices.getTransactionManager());
    // Let's create a Persistence Knowledge Session
    System.out.println(" >>> Let's create a Persistent Knowledge Session");
    final StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int sessionId = ksession.getId();
    assertNotNull(sessionId);
    assertTrue(sessionId != 0);
    // We need to register the WorkItems and Listeners that the session will use
    MockHTWorkItemHandler mockHTWorkItemHandler = new MockHTWorkItemHandler();
    MockExternalServiceWorkItemHandler mockExternalServiceWorkItemHandler = new MockExternalServiceWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", mockHTWorkItemHandler);
    ksession.getWorkItemManager().registerWorkItemHandler("External Service Call", mockExternalServiceWorkItemHandler);
    // KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession);
    // Let's create a Process Instance
    Person person = new Person("Salaboy", 29);
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("person", person);
    // Each Command will generate an interaction
    System.out.println(">>> Let's Create Process Instance");
    ProcessInstance processInstance = ksession.createProcessInstance("com.salaboy.process.AsyncInteractions", params);
    System.out.println(">>> Let's Start the Process Instance");
    long processInstanceOne = processInstance.getId();
    ksession.startProcessInstance(processInstanceOne);
    // We need to dispose the session, because the reference to this ksession object will no longer be valid
    // because another thread could load the same session and execute a different command.
    System.out.println(">>> Disposing Session");
    ksession.dispose();
    // Let's reload the session and create a different process instance inside it
    StatefulKnowledgeSession loadedKsession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, null, env);
    // All the listeners and WorkItemHandlers are volatile, so we need to register them each time that we reload the session
    // from the DB.
    loadedKsession.getWorkItemManager().registerWorkItemHandler("Human Task", mockHTWorkItemHandler);
    loadedKsession.getWorkItemManager().registerWorkItemHandler("External Service Call", mockExternalServiceWorkItemHandler);
    // KnowledgeRuntimeLoggerFactory.newConsoleLogger(loadedKsession);
    // Let's create another instance and start it.
    System.out.println(">>> Let's Create Process Instance");
    processInstance = loadedKsession.createProcessInstance("com.salaboy.process.AsyncInteractions", params);
    System.out.println(">>> Let's Start the Process Instance");
    long processInstanceTwo = processInstance.getId();
    loadedKsession.startProcessInstance(processInstanceTwo);
    System.out.println(">>> Disposing Session");
    loadedKsession.dispose();
    StatefulKnowledgeSession checkKsession = JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, kbase, null, env);
    assertEquals(0, checkKsession.getProcessInstances().size());
    checkKsession.dispose();
}

Example 40 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder in project jBPM5-Developer-Guide by Salaboy.

the class PersistentProcessTest method processInstancesPersistenceFaultRecoveryTest.

@Test
public void processInstancesPersistenceFaultRecoveryTest() throws Exception {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("process-async-interactions.bpmn"), ResourceType.BPMN2);
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        fail(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    Environment env = EnvironmentFactory.newEnvironment();
    EntityManagerFactory emf = Persistence.createEntityManagerFactory("org.jbpm.runtime");
    env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);
    env.set(EnvironmentName.TRANSACTION_MANAGER, TransactionManagerServices.getTransactionManager());
    // Let's create a Persistence Knowledge Session
    System.out.println(" >>> Let's create a Persistent Knowledge Session");
    final StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int sessionId = ksession.getId();
    assertNotNull(sessionId);
    assertTrue(sessionId != 0);
    // We need to register the WorkItems and Listeners that the session will use
    MockAsyncHTWorkItemHandler mockAsyncHTWorkItemHandler = new MockAsyncHTWorkItemHandler();
    MockFaultWorkItemHandler mockFaultWorkItemHandler = new MockFaultWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", mockAsyncHTWorkItemHandler);
    ksession.getWorkItemManager().registerWorkItemHandler("External Service Call", mockFaultWorkItemHandler);
    // KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession);
    // Let's create a Process Instance
    Person person = new Person("Salaboy", 29);
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("person", person);
    // Each Command will generate an interaction
    System.out.println(">>> Let's Create Process Instance");
    ProcessInstance processInstance = ksession.createProcessInstance("com.salaboy.process.AsyncInteractions", params);
    System.out.println(">>> Let's Start the Process Instance");
    try {
        ksession.startProcessInstance(processInstance.getId());
        System.out.println(">>> Completing the first Human Interaction");
        ksession.getWorkItemManager().completeWorkItem(mockAsyncHTWorkItemHandler.getId(), null);
    } catch (Exception e) {
        assertTrue(e instanceof WorkflowRuntimeException);
        System.out.println(">>> Disposing Session");
        // We need to dispose the session, because the reference to this ksession object will no longer be valid
        // because another thread could load the same session and execute a different command.
        ksession.dispose();
        // The startProcess transaction never gets commited.
        EntityManager em = emf.createEntityManager();
        // The ProcessInstance is in the same state as when it was created
        List resultList = em.createQuery("select p from ProcessInstanceInfo p").getResultList();
        assertEquals(1, resultList.size());
        assertEquals(0, ((WorkflowProcessInstanceImpl) processInstance).getNodeInstances().size());
        // No WorkItemInfo was commited.
        resultList = em.createQuery("select w from WorkItemInfo w").getResultList();
        assertEquals(1, resultList.size());
    }
}