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

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 Assignee: Huisheng Xu Attachments: JBPM-2836.patch, process.jpdl.xml, TaskAfterJoinTest.java 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)