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

        List<String> list = new ArrayList<String>();
        ksession.setGlobal("list", list);
        TestVariable person = new TestVariable("John Doe");
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("person", person);
        ProcessInstance processInstance =
            ksession.startProcess("org.drools.actions", params);
        assertEquals(1, list.size());
        assertEquals("John Doe", list.get(0));
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
    }

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        List<String> list = new ArrayList<String>();
        ksession.setGlobal("list", list);
        TestVariable person = new TestVariable("John Doe");
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("person", person);
        ProcessInstance processInstance =
            ksession.startProcess("org.drools.actions", params);
        assertEquals(1, list.size());
        assertEquals("John Doe", list.get(0));
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
    }

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        kbuilder.add(new ReaderResource(source), ResourceType.DRF);
        KnowledgeBase kbase = kbuilder.newKnowledgeBase();
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        List<String> list = new ArrayList<String>();
        ksession.setGlobal("list", list);
        ProcessInstance processInstance =
            ksession.startProcess("org.drools.actions1");
        assertEquals(1, list.size());
        assertEquals("Action1", list.get(0));
        list.clear();
        processInstance =
          ksession.startProcess("org.drools.actions2");
        assertEquals(1, list.size());
        assertEquals("Action2", list.get(0));
        assertEquals(ProcessInstance.STATE_COMPLETED, processInstance.getState());
    }

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        parameters.put( "UserName",
                        "John Doe" );
        parameters.put( "Person",
                        new Person( "John Doe" ) );


        ProcessInstance processInstance = null;
        try {
            processInstance = ksession.startProcess( "org.drools.actions",
                                                                 parameters );
            Assert.fail( "should fail if WorkItemHandler for" + workName + "is not registered" );
        } catch ( Throwable e ) {

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        parameters.put( "UserName",
                        "John Doe" );
        parameters.put( "Person",
                        new Person( "John Doe" ) );


        ProcessInstance processInstance = ksession.startProcess( "org.drools.actions",
                                                                  parameters );
        long processInstanceId = processInstance.getId();
        Assert.assertEquals( ProcessInstance.STATE_ACTIVE,
                           processInstance.getState() );
        ksession.getWorkItemManager().registerWorkItemHandler( workName,
                                                               null );


        try {
            ksession.abortProcessInstance( processInstanceId );
            Assert.fail( "should fail if WorkItemHandler for" + workName + "is not registered" );
        } catch ( WorkItemHandlerNotFoundException wihnfe ) {


        }


        Assert.assertEquals( ProcessInstance.STATE_ABORTED,
                             processInstance.getState() );
    }

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    public void testInclusiveSplitDefault() throws Exception {
        KnowledgeBase kbase = createKnowledgeBase("BPMN2-InclusiveSplitDefault.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("x", -5);
        ProcessInstance processInstance = ksession.startProcess("com.sample.test", params);
        assertTrue(processInstance.getState() == ProcessInstance.STATE_COMPLETED);
    }

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    KnowledgeBase kbase = createKnowledgeBase("BPMN2-EventBasedSplit.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
    // Yes
    ProcessInstance processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
        ksession.signalEvent("Yes", "YesValue", processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    // No
    processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
        ksession.signalEvent("No", "NoValue", processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
  }

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    KnowledgeBase kbase = createKnowledgeBase("BPMN2-EventBasedSplit.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new DoNothingWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
    // Yes
    ProcessInstance processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new DoNothingWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
        ksession.signalEvent("Yes", "YesValue", processInstance.getId());
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    // No
    processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new DoNothingWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
        ksession.signalEvent("No", "NoValue", processInstance.getId());
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
  }

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    KnowledgeBase kbase = createKnowledgeBase("BPMN2-EventBasedSplit.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
    // Yes
    ProcessInstance processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
        ksession.signalEvent("Yes", "YesValue", processInstance.getId());
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new DoNothingWorkItemHandler());
        // No
    ksession.signalEvent("No", "NoValue", processInstance.getId());
  }

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    KnowledgeBase kbase = createKnowledgeBase("BPMN2-EventBasedSplit2.bpmn2");
    StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
    // Yes
    ProcessInstance processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
        ksession.signalEvent("Yes", "YesValue", processInstance.getId());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
    Thread.sleep(800);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
        ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
        // Timer
    processInstance = ksession.startProcess("com.sample.test");
    assertTrue(processInstance.getState() == ProcessInstance.STATE_ACTIVE);
    Thread.sleep(800);
    ksession = restoreSession(ksession, true);
    ksession.getWorkItemManager().registerWorkItemHandler("Email1", new SystemOutWorkItemHandler());
    ksession.getWorkItemManager().registerWorkItemHandler("Email2", new SystemOutWorkItemHandler());
    assertProcessInstanceCompleted(processInstance.getId(), ksession);
  }

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