1 Reply Latest reply on Dec 4, 2019 10:53 AM by neo_busteni

JBPM 6 Custom work item in Subprocess and per process strategy fails to get handler

krbruce81 Mar 21, 2017 11:20 AM

Hi,

We just migrated from JBPM 5.0 to JBPM 6 and struck at an issue described below. Any help towards solving this will be appreciated.

Environment: JBPM 6 , used as embedded JBPM, DB persistence , spring for run time manager and engine creations, per process instance strategy followed for run time

We have a custom work item created for a domain specific logic execution. When the work item is executed inside a re-usable subprocess it fails to find the custom workitem handler which was registered with the session used to start the parent process.

It works if we change the strategy to Singleton as its he same session or both parent process and subprocess.

Is there any limitaion to use Singleton use as the strategy for executing custom workitem in subprocesses or am I missing something.

The first image shows the parent process with 'test Subprocess' as the reusable subproess and the secong one shows the subprocess

Stack trace:

org.jbpm.workflow.instance.WorkflowRuntimeException: [com.mypackage.testsubprocess:2 - TestSubProcessServiceTask:4] -- Could not find work item handler for AsyncTask

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:177)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:364)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:323)

at org.jbpm.workflow.instance.node.ActionNodeInstance.triggerCompleted(ActionNodeInstance.java:61)

at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:57)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:171)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:364)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:323)

at org.jbpm.workflow.instance.node.StartNodeInstance.triggerCompleted(StartNodeInstance.java:73)

at org.jbpm.workflow.instance.node.StartNodeInstance.internalTrigger(StartNodeInstance.java:44)

at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:171)

at org.jbpm.ruleflow.instance.RuleFlowProcessInstance.internalStart(RuleFlowProcessInstance.java:35)

at org.jbpm.process.instance.impl.ProcessInstanceImpl.start(ProcessInstanceImpl.java:236)

at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.start(WorkflowProcessInstanceImpl.java:389)

at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:195)

at org.jbpm.process.instance.ProcessRuntimeImpl.startProcessInstance(ProcessRuntimeImpl.java:204)

at org.drools.core.impl.StatefulKnowledgeSessionImpl.startProcessInstance(StatefulKnowledgeSessionImpl.java:1911)

at org.drools.core.command.runtime.process.StartProcessInstanceCommand.execute(StartProcessInstanceCommand.java:52)

at org.drools.core.command.runtime.process.StartProcessInstanceCommand.execute(StartProcessInstanceCommand.java:29)

at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:548)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.jpa.OptimisticLockRetryInterceptor.execute(OptimisticLockRetryInterceptor.java:73)

at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41)

at org.drools.persistence.jta.TransactionLockInterceptor.execute(TransactionLockInterceptor.java:67)

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:358)

at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcessInstance(CommandBasedStatefulKnowledgeSession.java:256)

at org.jbpm.workflow.instance.node.SubProcessNodeInstance.internalTrigger(SubProcessNodeInstance.java:188)