Examples of org.openbp.server.context.TokenContext

org.openbp.server.context.TokenContext
The context for process execution. The token context contains all information that reflects the current state of the process. This includes process execution data, the current global and socket parameter values of the process, i/o etc. The TokenContext interface now extends the RuntimeAttribute interface. This provides the ability to store arbitrary objects in a map. However, the map won't be serialized to persistent storage. When a context is executed by the engine, the thread executing the context is saved as runtime attribute under the key {@link TokenContext#RUNTIME_ATTRIBUTE_THREAD}. This feature may be used to terminate hanging threads by force in emergency situations. @author Heiko Erhardt


    startValue = 99;
    inputParams.put("NumValue", new Integer(startValue));


    // Create the process context and start the process
    TokenContext token = testCase.createToken();
    token.setDebuggerId("Deb1");
    token.createProcessVariable("externalValue", true);
    token.setProcessVariableValue("externalValue", new Integer(199));
    processFacade.startToken(token, STARTREF, inputParams);


    Object tokenId = token.getId();


    // Note: This might also be done by some worker thread; for the test case, we do it right here.
    processFacade.executePendingContextsInThisThread();


    return tokenId;

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  }


  @Transactional(propagation = Propagation.REQUIRED)
  public void doCheckStart(TestCaseBase testCase, final Object tokenId)
  {
    TokenContext token = processFacade.getTokenById(tokenId);


    // The first workflow node made us stop here
    testCase.assertCurrentNode(token, "Workflow");
  }

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  }


  @Transactional(propagation = Propagation.REQUIRED)
  public void doWorkflowTask(TestCaseBase testCase, final Object tokenId)
  {
    TokenContext token = processFacade.getTokenById(tokenId);


    // Check the process variables of the token context
    Object p = token.getProcessVariableValue("globalObject");
    assertTrue(p instanceof PersistedComplexParam);
    PersistedComplexParam rcp = (PersistedComplexParam) p;
    int nRet = rcp.getResult();
    assertEquals(startValue + 1, nRet);


    // The any workflow tasks that are associated with our process.
    WorkflowTaskCriteria criteria = new WorkflowTaskCriteria();
    criteria.setTokenContext(token);
    Iterator it = processFacade.getworkflowTasks(criteria);
    assertTrue(it.hasNext());
    WorkflowTask task = (WorkflowTask) it.next();


    TokenContext taskToken = task.getTokenContext();


    // Check the process variables of the token context
    Object p2 = taskToken.getProcessVariableValue("globalObject");
    assertTrue(p2 instanceof PersistedComplexParam);
    PersistedComplexParam rcp2 = (PersistedComplexParam) p2;
    int nRet2 = rcp2.getResult();
    assertEquals(startValue + 1, nRet2);

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  }


  @Transactional(propagation = Propagation.REQUIRED)
  public void doFinish(TestCaseBase testCase, final Object tokenId)
  {
    TokenContext token = processFacade.getTokenById(tokenId);


    // Note: This should be done by some worker thread; for the test case, we do it right here.
    processFacade.executePendingContextsInThisThread();


    // Token should be at the end of the workflow

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  @Transactional(propagation = Propagation.REQUIRED)
  public void doCheckFinish(TestCaseBase testCase, final Object tokenId)
  {
    // Token should have been removed from the database
    TokenContext token = processFacade.getTokenById(tokenId);
    assertNull(token);
  }

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  public int checkNumberOfContexts(String stepName, int expected)
  {
    int n = 0;
    for (Iterator it = CollectionUtil.iterator(processFacade.getTokens(null, 0)); it.hasNext();)
    {
      TokenContext token = (TokenContext) it.next();
      if (token.getCurrentSocket() == null)
      {
        errOut("Test context check " + stepName + ": Socket of context " + token + " is null.");
      }
      ++n;
    }

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    // Start 3 processes that consist of a signal wait activity only
    // and make them wait for the signal id "Sync".
    ArrayList contextList = new ArrayList();
    for (int i = 0; i < NUM_THREADS; ++i)
    {
      TokenContext tc = startSimpleSignalWaitProcess("Sync" + i, 0);
      contextList.add(tc);
    }


    // Thread pool capacity is 2, so the executor should pick exactly 2 processes for execution.
    int n = getProcessFacade().executePendingContextsInDifferentThread();

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    // Start 3 processes that consist of a signal wait activity only
    // and make them wait for the signal id "Sync".
    final ArrayList contextList = new ArrayList();
    for (int i = 0; i < NUM_THREADS; ++i)
    {
      TokenContext tc = startSimpleSignalWaitProcess("Signal" + i, 0);
      contextList.add(tc);
    }


    // In 3 seconds, we will send the signal to the processes
    new Thread()

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    startSimpleSignalSetProcess("Sync2", "Sig 2", 1);
    startSimpleSignalSetProcess("Sync3", "Sig 3", 3);


    Iterator it = getProcessServer().getTokenContextService().getExecutableContexts(10);


    TokenContext tc;


    tc = (TokenContext) it.next();
    getProcessFacade().executeContextInThisThread(tc);
    assertEquals(TestCaseSyncMgr.getInstance().getSignal(tc, "Sync2"), "Sig 2");

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    String localHost = new DefaultSystemNameProvider().getSystemName();
    TokenContextService tokenContextService = getProcessServer().getTokenContextService();


    // Create all kinds of contexts and simulate several states


    TokenContext tc1 = startSimpleSignalSetProcess("TestSignal1", "Done", 0);
    tc1.setLifecycleState(LifecycleState.SELECTED);
    tc1.setLifecycleRequest(LifecycleRequest.NONE);
    tc1.setNodeId(localHost);
    tokenContextService.saveContext(tc1);


    TokenContext tc2 = startSimpleSignalSetProcess("TestSignal2", "Done", 0);
    tc2.setLifecycleState(LifecycleState.SELECTED);
    tc2.setLifecycleRequest(LifecycleRequest.NONE);
    tc2.setNodeId("DifferentHost");
    tokenContextService.saveContext(tc2);


    TokenContext tc3 = startSimpleSignalSetProcess("TestSignal3", "Done", 0);
    tc3.setLifecycleState(LifecycleState.RUNNING);
    tc3.setLifecycleRequest(LifecycleRequest.NONE);
    tc3.setNodeId(localHost);
    tokenContextService.saveContext(tc3);


    TokenContext tc4 = startSimpleSignalSetProcess("TestSignal4", "Done", 0);
    tc4.setLifecycleState(LifecycleState.ERROR);
    tc4.setLifecycleRequest(LifecycleRequest.NONE);
    tc4.setNodeId(localHost);
    tokenContextService.saveContext(tc4);


    TokenContext tc5 = startSimpleSignalSetProcess("TestSignal5", "Done", 0);
    tokenContextService.saveContext(tc5);


    getProcessServer().getEngine().commit();


    // Execute those that can be executed

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