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Example 1 with StatefulKnowledgeSessionImpl

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

the class AdvancedProcessAndRulesIntegrationTest method processEventsTest.

@Test
public void processEventsTest() throws InterruptedException {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("evolution/mapping.drl"), ResourceType.DRL);
    kbuilder.add(new ClassPathResource("evolution/scoring_processVariables_wider.drl"), ResourceType.DRL);
    kbuilder.add(new ClassPathResource("evolution/process-events-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();
    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new WorkItemHandler() {

        public void executeWorkItem(WorkItem wi, WorkItemManager wim) {
            System.out.println(" >>> Completing Task! -> " + wi.getName() + " - id: " + wi.getId());
            wim.completeWorkItem(wi.getId(), null);
        }

        public void abortWorkItem(WorkItem wi, WorkItemManager wim) {
            throw new UnsupportedOperationException("Not supported yet.");
        }
    });
    KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession);
    ksession.addEventListener(new DefaultAgendaEventListener() {

        @Override
        public void activationCreated(ActivationCreatedEvent event) {
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }

        @Override
        public void afterRuleFlowGroupActivated(RuleFlowGroupActivatedEvent event) {
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }
    });
    Person person = new Person("Salaboy", 28);
    RatesToday ratesToday = new RatesToday(1, 100);
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("person", person);
    params.put("ratesToday", ratesToday);
    ProcessInstance processInstance = ksession.createProcessInstance("com.salaboy.process.SimpleDecision", params);
    System.out.println("Variables: " + ((WorkflowProcessInstanceImpl) processInstance).getVariables());
    assertEquals(processInstance.getState(), ProcessInstance.STATE_PENDING);
    final FactHandle processHandle = ksession.insert(processInstance);
    ((StatefulKnowledgeSessionImpl) ksession).addEventListener(new DefaultProcessEventListener() {

        @Override
        public void beforeProcessStarted(ProcessStartedEvent event) {
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }

        @Override
        public void afterProcessStarted(ProcessStartedEvent event) {
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).fireAllRules();
        }

        @Override
        public void afterProcessCompleted(ProcessCompletedEvent event) {
            ((StatefulKnowledgeSession) event.getKnowledgeRuntime()).retract(processHandle);
        }
    });
    ksession.startProcessInstance(processInstance.getId());
    Thread.sleep(1000);
    // // If you want to query the process variables while the process Instance is running you can do:
    // QueryResults queryResults = ksession.getQueryResults("allProcessVariables", new Object[]{});
    // Iterator<QueryResultsRow> iterator = queryResults.iterator();
    // 
    // QueryResultsRow ratesRow = iterator.next();
    // assertEquals(ratesToday, ((ProcessVariable) ratesRow.get("$pv")).getValue());
    // 
    // QueryResultsRow personRow = iterator.next();
    // assertEquals(person, ((ProcessVariable) personRow.get("$pv")).getValue());
    assertEquals(processInstance.getState(), ProcessInstance.STATE_COMPLETED);
    QueryResults queryResults = ksession.getQueryResults("allProcessVariables", new Object[] {});
    // The Process Variables are automatically retracted when the Process Instance is Completed
    assertEquals(0, queryResults.size());
}
Also used : HashMap(java.util.HashMap) FactHandle(org.drools.runtime.rule.FactHandle) WorkflowProcessInstanceImpl(org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl) DefaultAgendaEventListener(org.drools.event.rule.DefaultAgendaEventListener) WorkItem(org.drools.runtime.process.WorkItem) KnowledgeBuilder(org.drools.builder.KnowledgeBuilder) KnowledgeBase(org.drools.KnowledgeBase) ActivationCreatedEvent(org.drools.event.rule.ActivationCreatedEvent) WorkItemManager(org.drools.runtime.process.WorkItemManager) KnowledgeBuilderError(org.drools.builder.KnowledgeBuilderError) StatefulKnowledgeSession(org.drools.runtime.StatefulKnowledgeSession) ProcessStartedEvent(org.drools.event.process.ProcessStartedEvent) RatesToday(com.salaboy.model.RatesToday) ProcessCompletedEvent(org.drools.event.process.ProcessCompletedEvent) ClassPathResource(org.drools.io.impl.ClassPathResource) QueryResults(org.drools.runtime.rule.QueryResults) WorkItemHandler(org.drools.process.instance.WorkItemHandler) RuleFlowGroupActivatedEvent(org.drools.event.rule.RuleFlowGroupActivatedEvent) StatefulKnowledgeSessionImpl(org.drools.impl.StatefulKnowledgeSessionImpl) DefaultProcessEventListener(org.drools.event.process.DefaultProcessEventListener) ProcessInstance(org.drools.runtime.process.ProcessInstance) Person(com.salaboy.model.Person)

Example 2 with StatefulKnowledgeSessionImpl

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

the class ProcessAndEventMultiThreadIntegrationTest method processEventsWithListenerTest.

@Test
public void processEventsWithListenerTest() throws InterruptedException {
    // Let's create a kbuilder, kbase and ksession for running the process
    final StatefulKnowledgeSession processKsession = createProcessSession();
    // Let's create a kbuilder, kbase and ksession for analyzing the process events
    final StatefulKnowledgeSession eventsKsession = createEventsSession();
    final TaskSpeed taskSpeed = new TaskSpeed(1000L);
    eventsKsession.setGlobal("taskSpeed", taskSpeed);
    processKsession.getWorkItemManager().registerWorkItemHandler("Human Task", new WorkItemHandler() {

        public void executeWorkItem(WorkItem wi, WorkItemManager wim) {
            try {
                System.out.println(" >>> Working on Task! it will take: " + taskSpeed.getAmount() / 1000 + " seconds.");
                Thread.sleep(taskSpeed.getAmount());
            } catch (InterruptedException ex) {
                Logger.getLogger(ProcessAndEventMultiThreadIntegrationTest.class.getName()).log(Level.SEVERE, null, ex);
            }
            System.out.println(" >>> Completing Task! -> " + wi.getName() + " - id: " + wi.getId());
            wim.completeWorkItem(wi.getId(), null);
        }

        public void abortWorkItem(WorkItem wi, WorkItemManager wim) {
        // do nothing
        }
    });
    ((StatefulKnowledgeSessionImpl) processKsession).addEventListener(new DefaultProcessEventListener() {

        @Override
        public void beforeProcessStarted(ProcessStartedEvent event) {
            System.out.println(" >>> Before Process Started: " + event.getProcessInstance().getProcessName());
            eventsKsession.insert(event);
        }

        @Override
        public void afterProcessCompleted(ProcessCompletedEvent event) {
            System.out.println(" >>> After Process Completed: " + event.getProcessInstance().getProcessName());
            eventsKsession.insert(event);
        }

        @Override
        public void beforeNodeLeft(org.drools.event.process.ProcessNodeLeftEvent event) {
            System.out.println(" >>> Before Node Left: " + event.getNodeInstance().getNodeName());
            eventsKsession.insert(event);
        }
    });
    for (int i = 0; i < 5; i++) {
        for (int j = 0; j < 5; j++) {
            final int id1 = i;
            final int id2 = j;
            new Thread(new Runnable() {

                public void run() {
                    Person person = new Person("Salaboy-" + id1 + "_" + id2, id2);
                    Map<String, Object> params = new HashMap<String, Object>();
                    params.put("person", person);
                    ProcessInstance processInstance = processKsession.createProcessInstance("com.salaboy.process.SimpleProcess", params);
                    assertEquals(processInstance.getState(), ProcessInstance.STATE_PENDING);
                    FactHandle processtHandle = processKsession.insert(processInstance);
                    System.out.println("Starting Process Instance: " + processInstance.getId());
                    processKsession.startProcessInstance(processInstance.getId());
                    assertEquals(processInstance.getState(), ProcessInstance.STATE_COMPLETED);
                    processKsession.retract(processtHandle);
                }
            }).start();
        }
        Thread.sleep(3000);
    }
}
Also used : HashMap(java.util.HashMap) FactHandle(org.drools.runtime.rule.FactHandle) StatefulKnowledgeSession(org.drools.runtime.StatefulKnowledgeSession) ProcessStartedEvent(org.drools.event.process.ProcessStartedEvent) TaskSpeed(com.salaboy.model.TaskSpeed) WorkItem(org.drools.runtime.process.WorkItem) ProcessCompletedEvent(org.drools.event.process.ProcessCompletedEvent) WorkItemHandler(org.drools.process.instance.WorkItemHandler) StatefulKnowledgeSessionImpl(org.drools.impl.StatefulKnowledgeSessionImpl) DefaultProcessEventListener(org.drools.event.process.DefaultProcessEventListener) ProcessInstance(org.drools.runtime.process.ProcessInstance) WorkItemManager(org.drools.runtime.process.WorkItemManager) Person(com.salaboy.model.Person)

Aggregations

Person (com.salaboy.model.Person)2 HashMap (java.util.HashMap)2 DefaultProcessEventListener (org.drools.event.process.DefaultProcessEventListener)2 ProcessCompletedEvent (org.drools.event.process.ProcessCompletedEvent)2 ProcessStartedEvent (org.drools.event.process.ProcessStartedEvent)2 StatefulKnowledgeSessionImpl (org.drools.impl.StatefulKnowledgeSessionImpl)2 WorkItemHandler (org.drools.process.instance.WorkItemHandler)2 StatefulKnowledgeSession (org.drools.runtime.StatefulKnowledgeSession)2 ProcessInstance (org.drools.runtime.process.ProcessInstance)2 WorkItem (org.drools.runtime.process.WorkItem)2 WorkItemManager (org.drools.runtime.process.WorkItemManager)2 FactHandle (org.drools.runtime.rule.FactHandle)2 RatesToday (com.salaboy.model.RatesToday)1 TaskSpeed (com.salaboy.model.TaskSpeed)1 KnowledgeBase (org.drools.KnowledgeBase)1 KnowledgeBuilder (org.drools.builder.KnowledgeBuilder)1 KnowledgeBuilderError (org.drools.builder.KnowledgeBuilderError)1 ActivationCreatedEvent (org.drools.event.rule.ActivationCreatedEvent)1 DefaultAgendaEventListener (org.drools.event.rule.DefaultAgendaEventListener)1 RuleFlowGroupActivatedEvent (org.drools.event.rule.RuleFlowGroupActivatedEvent)1