New subject: [JBoss JIRA] Updated: (JBPM-2836) Process execution terminates with NullPointerException, when there is task with candidate-groups after join node in process definition.

Friday, 26 March 2010

Process execution terminates with NullPointerException, when there is task with
candidate-groups after join node in process definition.
---------------------------------------------------------------------------------------------------------------------------------------

                 Key: JBPM-2836
                 URL: https://jira.jboss.org/jira/browse/JBPM-2836
             Project: jBPM
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Runtime Engine
    Affects Versions: jBPM 4.3
         Environment: Windows 2007, HSQL
            Reporter: Jiri Mecner

Process execution terminates with NullPointerException, when there is task with
candidate-groups after join node in process definition.

Example test case:

process.jpdl.xml
<?xml version="1.0" encoding="UTF-8"?>

<process name="TaskAfterJoinTest"
xmlns="http://jbpm.org/4.3/jpdl">

   <start g="16,60,48,48">
      <transition to="fork"/>
   </start>

   <fork g="96,60,48,48" name="fork">
      <transition g="120,41:" to="state1"/>
      <transition to="state2" g="120,126:"/>
   </fork>

   <state g="176,16,149,52" name="state1">
      <transition g="379,40:" to="join"/>
   </state>

   <state g="176,100,149,52" name="state2">
      <transition to="join" g="382,125:"/>
   </state>

   <join g="357,60,48,48" name="join">
      <transition to="task1"/>
   </join>

   <end g="561,60,48,48" name="end"/>
   <task candidate-groups="sales-dept" g="437,58,92,52"
name="task1">
      <transition to="end"/>
   </task>

</process>

TaskAfterJoinTest.java

public class TaskAfterJoinTest extends JbpmTestCase {

  String deploymentId;

  protected void setUp() throws Exception {
    super.setUp();

    deploymentId = repositoryService.createDeployment()
        .addResourceFromClasspath("process.jpdl.xml")
        .deploy();
  }

  protected void tearDown() throws Exception {
    repositoryService.deleteDeploymentCascade(deploymentId);

    super.tearDown();
  }

  public void test() {
    ProcessInstance processInstance =
executionService.startProcessInstanceByKey("TaskAfterJoinTest");
    String pid = processInstance.getId();

    Set<String> expectedActivityNames = new HashSet<String>();
    expectedActivityNames.add("state1");
    expectedActivityNames.add("state2");

    assertEquals(expectedActivityNames, processInstance.findActiveActivityNames());

    assertNotNull(processInstance.findActiveExecutionIn("state1"));
    assertNotNull(processInstance.findActiveExecutionIn("state2"));

    String state1Id = processInstance.findActiveExecutionIn("state1").getId();
    processInstance = executionService.signalExecutionById(state1Id);

    expectedActivityNames.remove("state1");
    assertEquals(expectedActivityNames, processInstance.findActiveActivityNames());

    assertNotNull(processInstance.findActiveExecutionIn("state2"));

    String state2Id = processInstance.findActiveExecutionIn("state2").getId();
    // HERE - it raises NullPointerException
    processInstance = executionService.signalExecutionById(state2Id);

    expectedActivityNames.remove("state1");
    expectedActivityNames.remove("task1");
    assertEquals(expectedActivityNames, processInstance.findActiveActivityNames());

    assertNotNull(processInstance.findActiveExecutionIn("task1"));

    String task1Id = processInstance.findActiveExecutionIn("task1").getId();
    processInstance = executionService.signalExecutionById(task1Id);

    assertNull("execution "+pid+" should not exist",
executionService.findExecutionById(pid));
  }

stack trace:
java.lang.NullPointerException
	at
org.jbpm.pvm.internal.wire.usercode.UserCodeReference.getProcessDefinition(UserCodeReference.java:75)
	at
org.jbpm.pvm.internal.wire.usercode.UserCodeReference.getObject(UserCodeReference.java:60)
	at
org.jbpm.pvm.internal.wire.usercode.UserCodeReference.getObject(UserCodeReference.java:51)
	at
org.jbpm.pvm.internal.model.ExecutionImpl.initializeAssignments(ExecutionImpl.java:759)
	at org.jbpm.jpdl.internal.activity.TaskActivity.execute(TaskActivity.java:95)
	at org.jbpm.jpdl.internal.activity.TaskActivity.execute(TaskActivity.java:58)
	at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:60)
	at
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:656)
	at org.jbpm.pvm.internal.model.ExecutionImpl.fire(ExecutionImpl.java:566)
	at org.jbpm.pvm.internal.model.ExecutionImpl.take(ExecutionImpl.java:472)
	at org.jbpm.jpdl.internal.activity.JoinActivity.execute(JoinActivity.java:93)
	at org.jbpm.jpdl.internal.activity.JoinActivity.execute(JoinActivity.java:49)
	at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:60)
	at
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:656)
	at
org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:616)
	at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:417)
	at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:61)
	at org.jbpm.pvm.internal.cmd.SignalCmd.execute(SignalCmd.java:35)
	at
org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
	at
org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)
	at
org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
	at
org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
	at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)
	at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)
	at
org.jbpm.pvm.internal.svc.ExecutionServiceImpl.signalExecutionById(ExecutionServiceImpl.java:84)
	at TaskAfterJoinTest.test(TaskAfterJoinTest.java:49)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at junit.framework.TestCase.runTest(TestCase.java:164)
	at org.jbpm.test.BaseJbpmTestCase.runTest(BaseJbpmTestCase.java:80)
	at junit.framework.TestCase.runBare(TestCase.java:130)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:120)
	at junit.framework.TestSuite.runTest(TestSuite.java:230)
	at junit.framework.TestSuite.run(TestSuite.java:225)
	at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

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[JBoss JIRA] Created: (JBPM-2836) Process execution terminates with NullPointerException, when there is task with candidate-groups after join node in process definition.