Examples with KnowledgeBase org.drools.KnowledgeBase used on opensource projects

Example 36 with KnowledgeBase

use of org.drools.KnowledgeBase 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 37 with KnowledgeBase

use of org.drools.KnowledgeBase 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());
    }
}

Example 38 with KnowledgeBase

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

the class PersistentProcessTest method processInstancesPersistenceFaultTest.

@Test
public void processInstancesPersistenceFaultTest() 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();
    MockFaultWorkItemHandler mockFaultWorkItemHandler = new MockFaultWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", mockHTWorkItemHandler);
    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());
    } 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(0, resultList.size());
    }
}

Example 39 with KnowledgeBase

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

the class PersistentProcessTest method processInstancesAndLocalHTTest.

@Test
public void processInstancesAndLocalHTTest() 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.ht");
    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
    TaskService client = createTaskService(emf);
    LocalHTWorkItemHandler localHTWorkItemHandler = new LocalHTWorkItemHandler(client, ksession);
    MockExternalServiceWorkItemHandler mockExternalServiceWorkItemHandler = new MockExternalServiceWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", localHTWorkItemHandler);
    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");
    processInstance = ksession.startProcessInstance(processInstance.getId());
    System.out.println(" >>> Looking for Salaboy's Tasks");
    List<TaskSummary> salaboysTasks = client.getTasksAssignedAsPotentialOwner("salaboy", "en-UK");
    assertTrue(salaboysTasks.size() == 1);
    TaskSummary salaboyTask = salaboysTasks.get(0);
    System.out.println(" >>> Starting Salaboy's Task");
    client.start(salaboyTask.getId(), "salaboy");
    System.out.println(" >>> Completing Salaboy's Task");
    client.complete(salaboyTask.getId(), "salaboy", null);
    List<TaskSummary> adminTasks = client.getTasksAssignedAsPotentialOwner("Administrator", "en-UK");
    assertTrue(adminTasks.size() == 1);
    TaskSummary adminTask = adminTasks.get(0);
    client.start(adminTask.getId(), "Administrator");
    client.complete(adminTask.getId(), "Administrator", null);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    // The process instance was completed and it should be out of the Ksession.
    assertNull(processInstance);
    // We need to dispose the session, because the reference to this ksession object will no longer be valid
    // Another thread could load the same session and execute a different command.
    System.out.println(">>> Disposing Session");
    ksession.dispose();
}

Example 40 with KnowledgeBase

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

the class PersistentProcessTest method processInstancePersistentAsyncTest.

@Test
public void processInstancePersistentAsyncTest() 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();
    MockExternalServiceWorkItemHandler mockExternalServiceWorkItemHandler = new MockExternalServiceWorkItemHandler();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", mockAsyncHTWorkItemHandler);
    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");
    ksession.startProcessInstance(processInstance.getId());
    // Now we need to manually complete the Human Interaction to continue the process
    System.out.println(">>> Completing the first Human Interaction");
    ksession.getWorkItemManager().completeWorkItem(mockAsyncHTWorkItemHandler.getId(), null);
    // It will execute the automatic external interaction and then another Human Interaction will need to be completed
    System.out.println(">>> Completing the second Human Interaction");
    ksession.getWorkItemManager().completeWorkItem(mockAsyncHTWorkItemHandler.getId(), null);
    // 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();
}