Examples of org.drools.runtime.process.ProcessInstance

org.drools.runtime.process.ProcessInstance
A process instance represents one specific instance of a process that is currently executing. Whenever a process is started, a process instance is created that represents that specific instance that was started. It contains all runtime information related to that instance. Multiple process instances of the same process can be executed simultaneously. For example, consider a process definition that describes how to process a purchase order. Whenever a new purchase order comes in, a new process instance will be created for that purchase order. Multiple process instances (one for each purchase order) can coexist. A process instance is uniquely identified by an id. This class can be extended to represent one specific type of process, e.g. WorkflowProcessInstance when using a WorkflowProcess where the process logic is expressed as a flow chart. @see org.drools.runtime.process.WorkflowProcessInstance


    public void testTimerBoundaryEventDuration() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-TimerBoundaryEventDuration.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("MyTask", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("TimerBoundaryEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        Thread.sleep(1000);
        ksession = restoreSession(ksession, true);
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    public void testTimerBoundaryEventCycle1() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-TimerBoundaryEventCycle1.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("MyTask", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("TimerBoundaryEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        Thread.sleep(1000);
        ksession = restoreSession(ksession, true);
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    public void testTimerBoundaryEventCycle2() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-TimerBoundaryEventCycle2.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("MyTask", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("TimerBoundaryEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        Thread.sleep(1000);
    assertProcessInstanceActive(processInstance.getId(), ksession);
        Thread.sleep(1000);
    assertProcessInstanceActive(processInstance.getId(), ksession);
    ksession.abortProcessInstance(processInstance.getId());
        Thread.sleep(1000);
    }

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    public void testTimerBoundaryEventInterrupting() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-TimerBoundaryEventInterrupting.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("MyTask", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("TimerBoundaryEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        Thread.sleep(1000);
        ksession = restoreSession(ksession, true);
        System.out.println("Firing timer");
        ksession.fireAllRules();
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        TestWorkItemHandler workItemHandler = new TestWorkItemHandler();
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ProcessInstance processInstance = ksession.startProcess("AdHocSubProcess");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        WorkItem workItem = workItemHandler.getWorkItem();
        assertNull(workItem);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ksession.fireAllRules();
        System.out.println("Signaling Hello2");
        ksession.signalEvent("Hello2", null, processInstance.getId());
        workItem = workItemHandler.getWorkItem();
        assertNotNull(workItem);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

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    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        TestWorkItemHandler workItemHandler = new TestWorkItemHandler();
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ProcessInstance processInstance = ksession.startProcess("AdHocSubProcess");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        WorkItem workItem = workItemHandler.getWorkItem();
        assertNull(workItem);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ksession.fireAllRules();
        workItem = workItemHandler.getWorkItem();
        assertNotNull(workItem);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", workItemHandler);
        ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    }
    
    public void testAdHocProcess() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-AdHocProcess.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ProcessInstance processInstance = ksession.startProcess("AdHocProcess");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler());
        System.out.println("Triggering node");
        ksession.signalEvent("Task1", null, processInstance.getId());
    assertProcessInstanceActive(processInstance.getId(), ksession);
        ksession.signalEvent("User1", null, processInstance.getId());
    assertProcessInstanceActive(processInstance.getId(), ksession);
    ksession.insert(new Person());
    ksession.signalEvent("Task3", null, processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    public void testIntermediateCatchEventSignal() throws Exception {
    KnowledgeBase kbase = createKnowledgeBase("BPMN2-IntermediateCatchEventSignal.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler());
    ProcessInstance processInstance = ksession.startProcess("IntermediateCatchEvent");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
        // now signal process instance
    ksession.signalEvent("MyMessage", "SomeValue", processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
  }

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    public void testIntermediateCatchEventMessage() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-IntermediateCatchEventMessage.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("IntermediateCatchEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        ksession = restoreSession(ksession, true);
        // now signal process instance
        ksession.signalEvent("Message-HelloMessage", "SomeValue", processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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    public void testIntermediateCatchEventTimerDuration() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-IntermediateCatchEventTimerDuration.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler());
        ProcessInstance processInstance = ksession.startProcess("IntermediateCatchEvent");
        assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
        // now wait for 1 second for timer to trigger
        Thread.sleep(1000);
        ksession = restoreSession(ksession, true);
        ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler());
        ksession.fireAllRules();
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    }

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