Kindly help me in passing processVariables when Human Task completed.

[javalearner]

Hi All,

Please some one give light on this problem. I am sstruggling to resolve this issue from last 2 days.

I am using JBPM 5.4.0 final with Spring 3.0 MVC and Hibernate 3. I followed the configuration given in

https://github.com/mswiderski/jbpm-examples/tree/master/jbpm-spring-web link.

Actually when i passing the values to processVariales while human task is going to completed, i am getting null values inside of the script task after the human task.(Please find the attached BPMN file).

The code i am using to complete the Human task is,

long taskId = unlockRequestVO.getRequestID();

humanTaskEngine.startTask(taskId,unlockRequestVO.getUser());

Map<String, Object> results = new HashMap<String,Object>();

                    results.put("muRequest",unlockRequestVO);

                    if(unlockRequestVO.getTaskStatus().equals("approve"))

                    results.put("isApproved",true);

                    else

                              results.put("isApproved", false);

humanTaskEngine.completeWithResults(taskId, user, results);

I have used the approach mentioned in the thread

https://community.jboss.org/thread/220416

But no use.

Please let me where am i doing wrong?

Please let me know if any information is required.

java.lang.RuntimeException: Constraints must return boolean values: null for expression

          at org.jbpm.process.instance.impl.ReturnValueConstraintEvaluator.evaluate(ReturnValueConstraintEvaluator.java:136)

          at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:72)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:126)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:279)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:238)

          at org.jbpm.workflow.instance.node.ActionNodeInstance.triggerCompleted(ActionNodeInstance.java:55)

          at org.jbpm.workflow.instance.node.ActionNodeInstance.internalTrigger(ActionNodeInstance.java:51)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:126)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:279)

          at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:238)

          at org.jbpm.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:47)

          at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:216)

          at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:196)

          at org.jbpm.workflow.instance.node.WorkItemNodeInstance.triggerCompleted(WorkItemNodeInstance.java:247)

          at org.jbpm.workflow.instance.node.HumanTaskNodeInstance.triggerCompleted(HumanTaskNodeInstance.java:90)

          at org.jbpm.workflow.instance.node.WorkItemNodeInstance.workItemAborted(WorkItemNodeInstance.java:301)

          at org.jbpm.workflow.instance.node.WorkItemNodeInstance.signalEvent(WorkItemNodeInstance.java:287)

          at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:342)

          at org.drools.persistence.jpa.processinstance.JPAWorkItemManager.abortWorkItem(JPAWorkItemManager.java:154)

          at org.drools.command.runtime.process.AbortWorkItemCommand.execute(AbortWorkItemCommand.java:56)

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

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

          at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:373)

          at org.drools.command.impl.CommandBasedStatefulKnowledgeSession$1.abortWorkItem(CommandBasedStatefulKnowledgeSession.java:156)

          at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.handleCompletedTask(GenericHTWorkItemHandler.java:276)

          at org.jbpm.process.workitem.wsht.GenericHTWorkItemHandler$TaskCompletedHandler.execute(GenericHTWorkItemHandler.java:234)

          at org.jbpm.task.service.local.LocalTaskService$SimpleEventTransport.trigger(LocalTaskService.java:329)

          at org.jbpm.task.event.MessagingTaskEventListener.triggerPayload(MessagingTaskEventListener.java:76)

          at org.jbpm.task.event.MessagingTaskEventListener.handleEvent(MessagingTaskEventListener.java:92)

          at org.jbpm.task.event.MessagingTaskEventListener.taskCompleted(MessagingTaskEventListener.java:109)

          at org.jbpm.task.event.TaskEventSupport.fireTaskCompleted(TaskEventSupport.java:49)

          at org.jbpm.task.service.TaskServiceSession.postTaskCompleteOperation(TaskServiceSession.java:569)

          at org.jbpm.task.service.TaskServiceSession.taskOperation(TaskServiceSession.java:495)

          at org.jbpm.task.service.local.LocalTaskService.complete(LocalTaskService.java:83)

          at org.jbpm.task.service.local.LocalTaskService.completeWithResults(LocalTaskService.java:91)

          at com.honeywell.hses.workflow.WorkFlowService.approveOrReject(WorkFlowService.java:121)

          at com.honeywell.hses.workflow.WorkFlowService$$FastClassByCGLIB$$aec4f2ca.invoke(<generated>)

          at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)

          at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:689)

          at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

          at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)

          at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

          at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:622)

          at com.honeywell.hses.workflow.WorkFlowService$$EnhancerByCGLIB$$ec946839.approveOrReject(<generated>)

          at com.honeywell.hses.workflow.WorkFlowProvider.approveOrRejectRequest(WorkFlowProvider.java:42)

          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

          at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

          at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

          at java.lang.reflect.Method.invoke(Unknown Source)

          at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)

          at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)

          at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)

          at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)

          at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)

          at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)

          at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)

          at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

          at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

          at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)

          at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)

          at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)

          at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)

          at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:88)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)

          at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)

          at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)

          at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)

          at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)

          at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

          at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

          at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

          at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

          at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

          at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

          at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)

          at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

          at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

          at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)

          at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)

          at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)

          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

          at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

          at java.lang.Thread.run(Unknown Source)

org.springframework.web.client.HttpServerErrorException: 500 Internal Server Error

          at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:92)

          at org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:494)

          at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:451)

          at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:409)

          at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:385)

          at com.honeywell.hses.controller.MetricController.getRestServiceResult(MetricController.java:363)

          at com.honeywell.hses.controller.MetricController.approveOrRejectRequest(MetricController.java:457)

          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

          at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

          at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

          at java.lang.reflect.Method.invoke(Unknown Source)

          at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)

          at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)

          at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)

          at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)

          at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

          at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

          at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)

          at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)

          at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

          at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

          at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

          at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

          at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

          at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

          at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

          at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

          at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)

          at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

          at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

          at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)

          at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)

          at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)

          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

          at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

          at java.lang.Thread.run(Unknown Source)

Thanks in advance.

Rajesh,

[javalearner]

Please some one help me on this issue.

[roxy1987]

Rajesh,

What I do is, rather than using completeWithResults(), I complete the task and set the variables like following :

public void setProcessVariables(final long intProcessInstId, final Map<String, Object> hshVariableMap)

{

  StatefulKnowledgeSession objKSession = BpmRepositoryConfig.createSession(); //Get the session. 

  try {

   objKSession.execute(new GenericCommand<Map<String, Object>>() {

    public Map<String, Object> execute(Context objContext) {

           StatefulKnowledgeSession objKSession = ((KnowledgeCommandContext) objContext).

                      getStatefulKnowledgesession();

           org.jbpm.process.instance.ProcessInstance objProcessInstance = (org.jbpm.process.instance.

                           ProcessInstance) objKSession.

                           getProcessInstance(intProcessInstId);

           VariableScopeInstance objVariableScope = (VariableScopeInstance) objProcessInstance.

                       getContextInstance(VariableScope.VARIABLE_SCOPE);

           Iterator<Map.Entry<String, Object>> objIterator = hshVariableMap.entrySet().iterator();

           while(objIterator.hasNext()) {

            Map.Entry<String, Object> objPairs = (Map.Entry<String, Object>)objIterator.next();

            objVariableScope.setVariable(objPairs.getKey(), objPairs.getValue());

           }

           return null;

       }

   });

  } catch(Exception objException) {

   objLogger.loggerError(objException);

  }

}

[javalearner]

Thanks a lot Shobhit Tyagi for your answer.

I resolved this issue by implementing own LocalHTHandler as suggested in the below link

https://community.jboss.org/thread/218281?start=0&tstart=0.

Once again thank you very much Shobhit Tyagi. I will try your approach too.

Thanks,

Rajesh.