9:16 a.m.
I have made a small BPM web application. In one of the methods in servlet I am getting the
instances for a particular user:
private void getProcessDetails(HttpServletRequest request, HttpServletResponse response)
{
|
| HttpSession session = request.getSession();
|
| List jbpmTaskInstances = new ArrayList();
|
| JbpmConfiguration jbpmConfiguration =
JbpmEncompassConfiguration.instance().getJbpmConfiguration();
| JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext();
|
|
| Session jbpmContextSession = jbpmContext.getSession();
|
|
| String actorPmId = new String("PM");
| String actorCordId = new String("Coordinator");
|
| List actorsList = new ArrayList();
| actorsList.add(actorPmId);
| List pooledPmTaskInstances =
jbpmContext.getTaskMgmtSession().findTaskInstances(actorsList);
| List jbpmPmTaskInstanceList = jbpmContextSession.createQuery("from
org.jbpm.taskmgmt.exe.TaskInstance ti where ti.start is null and ti.end is null and
actorId = '"+actorPmId+"'").list();
| //add pooledTaskInstances to taskList
| jbpmPmTaskInstanceList.addAll(pooledPmTaskInstances);
| jbpmTaskInstances.addAll(jbpmPmTaskInstanceList);
|
| actorsList = new ArrayList();
| actorsList.add(actorCordId);
| List pooledCordTaskInstances =
jbpmContext.getTaskMgmtSession().findTaskInstances(actorsList);
| List jbpmCordTaskInstanceList = jbpmContextSession.createQuery("from
org.jbpm.taskmgmt.exe.TaskInstance ti where ti.start is null and ti.end is null and
actorId = '"+actorCordId+"'").list();
| //add pooledTaskInstances to taskList
| jbpmCordTaskInstanceList.addAll(pooledCordTaskInstances);
| jbpmTaskInstances.addAll(jbpmCordTaskInstanceList);
|
| Iterator iAll = jbpmTaskInstances.iterator();
| Iterator iPm = jbpmPmTaskInstanceList.iterator();
| Iterator iCord = jbpmCordTaskInstanceList.iterator();
|
| List jbpmProcessInstances = new ArrayList();
|
| while(iAll.hasNext()){
| TaskInstance ti = (TaskInstance) iAll.next();
| ProcessInstance processInstance = ti.getProcessInstance();
| jbpmProcessInstances.add(processInstance);
| }
|
|
|
| session.setAttribute("pmTaskList", jbpmPmTaskInstanceList);
| session.setAttribute("cordTaskList", jbpmCordTaskInstanceList);
| session.setAttribute("allTaskList", jbpmProcessInstances);
|
|
|
| //jbpmContextSession.close();
| jbpmContext.close();
|
| }
|
|
I set arraylist of process instances in the session. But when I try to access process
instances in jsp it gives the following error:
|
| 10:13:39,214 ERROR [LazyInitializationException] could not initialize proxy - the
owning Session was closed
| org.hibernate.LazyInitializationException: could not initialize proxy - the owning
Session was closed
| at
org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:60)
| at
org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
| at
org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:172)
| at
org.jbpm.graph.exe.ProcessInstance$$EnhancerByCGLIB$$614637f6.getContextInstance(<generated>)
| at org.apache.jsp.jsp.index_jsp._jspService(index_jsp.java:121)
| at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
| at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
| at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
| at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
| at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
| at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at
org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:595)
Please some one help me....
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