org.jbpm.graph.def.DelegationException

[ucf]

hello I'm getting the error bellow when trying to get the noderef of the bpm_backage and the noderef of the content in this package(the content is one document since I upload one single document in a WF instance),and  here's my code:

package com.ucf.workflow;

import java.util.Iterator;
import java.util.List;

import org.alfresco.repo.action.executer.MailActionExecuter;
import org.alfresco.repo.admin.SysAdminParams;
import org.alfresco.repo.workflow.jbpm.JBPMSpringActionHandler;
import org.alfresco.service.cmr.action.Action;
import org.alfresco.service.cmr.action.ActionService;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.namespace.QName;
import org.apache.log4j.Logger;
import org.jbpm.graph.def.Transition;
import org.jbpm.graph.exe.ExecutionContext;
import org.springframework.beans.factory.BeanFactory;
import org.alfresco.service.cmr.workflow.WorkflowService;
import org.alfresco.repo.workflow.jbpm.JBPMNode;



public class ExternalReviewNotification extends JBPMSpringActionHandler {

   private static final long serialVersionUID = 1L;
   private static final String FROM_ADDRESS = "recyplac@gmail.com";
   private static final String SUBJECT = "document approval";
   private static QName PROP_EMAIL = QName.createQName(
         UcfModel.NAMESPACE_UCF_CONTENT_MODEL,
         UcfModel.PROP_UCF_EMAILUCF);
   private static Logger logger = Logger.getLogger(ExternalReviewNotification.class);
   public static final String PROP_EMAILSOUMETTEUR_STRING = "emailSoumetteur";
   private static String urlDRepo;
   private static String urlDShare;
   private static String userName;
   private static String address = "youssef.elhaddioui@gmail.com";
   protected ActionService actionService;
   private SysAdminParams sysAdminParams;
   private WorkflowService workflowService;
   

   public ExternalReviewNotification() {

   }

   @Override
   protected void initialiseHandler(BeanFactory beanfactory) {

      actionService = (ActionService) beanfactory.getBean("actionService");

   }


   
   @Override
   public void execute(ExecutionContext executionContext) throws Exception {
      logger.debug("Inside ExternalReviewNotification.execute()");
      String recipient = "youssef.elhaddioui@gmail.com";
       NodeRef nodeRef =  ((JBPMNode) executionContext.getContextInstance().getVariable("bpm_package")).getNodeRef();
          NodeRef nf=workflowService.getPackageContents(nodeRef).get(0);
         StringBuffer sb = new StringBuffer();
         sb.append("the uploaded doc is in \n");
         sb.append("127.0.0.1:8090/share/proxy/alfresco/api/node/content/workspace/SpacesStore/");
      
         sb.append(nf);
         sb.append("\n");
      
      sb.append("You have been assigned to a task named ");
      sb.append(executionContext.getToken().getNode().getName());
      sb.append(". See the appropriate action by clicking one of the links below:\r\n\r\n");
      List<Transition> transitionList = executionContext.getNode().getLeavingTransitions();
      for (Iterator<Transition> it = transitionList.iterator(); it.hasNext():smileywink: {
         Transition transition = it.next();
         sb.append(transition.getName());
         sb.append("\r\n");

         // TODO Adapt thie webscript so it takes the task id
         sb.append("http://localhost:8089/alfresco/service/workflows?nodeRef=jbpm$");
         sb.append(executionContext.getProcessInstance().getId());
         sb.append("-@");
         sb.append("&action=A");
         // sb.append(transition.getName());
         sb.append("&guest=true");
         sb.append("\r\n\r\n");
      }
      sb.append(" Or edit The task by here : ");
      sb.append("\r\n");
      sb.append("http://127.0.0.1:8090/share/page/task-edit?taskId=jbpm$");
      sb.append(executionContext.getTaskInstance().getId());

      logger.debug("Message body:" + sb.toString());

      Action mailAction = this.actionService.createAction(MailActionExecuter.NAME);
      mailAction.setParameterValue(MailActionExecuter.PARAM_SUBJECT, ExternalReviewNotification.SUBJECT);
      mailAction.setParameterValue(MailActionExecuter.PARAM_TO, recipient);
      mailAction.setParameterValue(MailActionExecuter.PARAM_FROM, ExternalReviewNotification.FROM_ADDRESS);
      mailAction.setParameterValue(MailActionExecuter.PARAM_TEXT, sb.toString());

      this.actionService.executeAction(mailAction, null);

      logger.debug("Mail action executed");

      return;
   }

   public WorkflowService getWorkflowService() {
      return workflowService;
   }

   public void setWorkflowService(WorkflowService workflowService) {
      this.workflowService = workflowService;
   }
public ActionService getActionService() {
      return actionService;
   }

   public void setActionService(ActionService actionService) {
      this.actionService = actionService;
   }

   public SysAdminParams getSysAdminParams() {
      return sysAdminParams;
   }

   public void setSysAdminParams(SysAdminParams sysAdminParams) {
      this.sysAdminParams = sysAdminParams;
   }


   
}
the exception:
org.alfresco.service.cmr.workflow.WorkflowException: 03160034 Failed to signal transition null from workflow task jbpm$355.
   at org.alfresco.repo.workflow.jbpm.JBPMEngine.endTask(JBPMEngine.java:2556)
   at org.alfresco.repo.workflow.WorkflowServiceImpl.endTask(WorkflowServiceImpl.java:1005)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
   at org.alfresco.service.cmr.workflow.WorkflowPermissionInterceptor.invoke(WorkflowPermissionInterceptor.java:54)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:46)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:161)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
   at com.sun.proxy.$Proxy67.endTask(Unknown Source)
   at com.lafarge.document.UploadLafargeDocument.startWorkflow(UploadLafargeDocument.java:168)
   at com.lafarge.document.UploadLafargeDocument.execute(UploadLafargeDocument.java:118)
   at org.alfresco.repo.web.scripts.RepositoryContainer$3.execute(RepositoryContainer.java:429)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:452)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:491)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:529)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:341)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:378)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:132)
   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.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:61)
   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$SocketProcessor.run(JIoEndpoint.java:310)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
   at java.lang.Thread.run(Thread.java:744)
Caused by: org.jbpm.graph.def.DelegationException
   at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:388)
   at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:379)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
   at org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$39158e0f.raiseException(<generated>)
   at org.jbpm.graph.def.GraphElement.raiseException(GraphElement.java:379)
   at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:301)
   at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:241)
   at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:213)
   at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:196)
   at org.jbpm.taskmgmt.exe.TaskInstance.create(TaskInstance.java:170)
   at org.alfresco.repo.workflow.jbpm.WorkflowTaskInstance.create(WorkflowTaskInstance.java:106)
   at org.jbpm.taskmgmt.exe.TaskMgmtInstance.createTaskInstance(TaskMgmtInstance.java:218)
   at org.jbpm.graph.node.TaskNode.execute(TaskNode.java:174)
   at org.jbpm.graph.def.Node.enter(Node.java:390)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
   at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$abbc87d1.enter(<generated>)
   at org.jbpm.graph.def.Transition.take(Transition.java:167)
   at org.jbpm.graph.def.Node.leave(Node.java:479)
   at org.jbpm.graph.node.StartState.leave(StartState.java:82)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
   at org.jbpm.graph.def.Node$$EnhancerByCGLIB$$abbc87d1.leave(<generated>)
   at org.jbpm.graph.exe.Token.signal(Token.java:223)
   at org.jbpm.graph.exe.Token.signal(Token.java:150)
   at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:490)
   at org.alfresco.repo.workflow.jbpm.WorkflowTaskInstance.end(WorkflowTaskInstance.java:135)
   at org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:406)
   at org.alfresco.repo.workflow.jbpm.JBPMEngine$30.doInJbpm(JBPMEngine.java:2529)
   at org.springmodules.workflow.jbpm31.JbpmTemplate$1.doInHibernate(JbpmTemplate.java:87)
   at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
   at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:339)
   at org.springmodules.workflow.jbpm31.JbpmTemplate.execute(JbpmTemplate.java:80)
   at org.alfresco.repo.workflow.jbpm.JBPMEngine.endTask(JBPMEngine.java:2504)
   … 48 more

[mitpatoliya]

As per these two lines.

at com.lafarge.document.UploadLafargeDocument.startWorkflow(UploadLafargeDocument.java:168)
at com.lafarge.document.UploadLafargeDocument.execute(UploadLafargeDocument.java:118)

You are getting error in UploadLafargeDocument class could you post them? Also please edit your post to add code within "code" tags