Insert TaskNode and Task at runtime via an ActionHandler
Hello,
I am trying to insert a new TaskNode together with a Task and a TaskInstance into a ProcessInstance at run-time through an ActionHandler. When testing it through the Jbpm API it executes fine but after deploying the process i get a TransientObjectException.
The code looks like this:
public class MyActionHandler implements ActionHandler {
[...]
public void execute(ExecutionContext executionContext) throws Exception {
[...]
TaskNode insertedTaskNode = new TaskNode("Check Task");
TaskMgmtDefinition tmd = (TaskMgmtDefinition)
executionContext.getDefinition(TaskMgmtDefinition.class);
Task task = new Task("Check please");
TaskInstance taskInstance = processInstance.getTaskMgmtInstance().createTaskInstance(task,
processInstance.getRootToken());
taskInstance.setActorId("grover");
Node currentNode = executionContext.getNode();
// TODO: Auch mehrere berücksichtigen!
Transition currentNodeLeavingTransition = (Transition) currentNode.getLeavingTransitions().get(0);
Node nextNode = currentNodeLeavingTransition.getTo();
currentNodeLeavingTransition.setTo(insertedTaskNode);
Transition insertedTaskNodeLeavingTransition = new Transition("insertedTaskNodeLeavingTransition");
insertedTaskNodeLeavingTransition.setFrom(insertedTaskNode);
insertedTaskNodeLeavingTransition.setTo(nextNode);
insertedTaskNode.addTask(task);
[...]
}
[...]
}The error stack looks like that:
15:23:54,813 DEBUG [HibernateSaveOperation] saving process instance
15:23:54,813 DEBUG [SaveLogsOperation] flushing logs to logging service.
15:23:54,823 DEBUG [CascadeSaveOperation] cascading save of 'org.jbpm.graph.exe.ProcessInstance@579615'
15:23:54,823 INFO [[/jbpm]] WARNING: Component _id13 just got an automatic id, because there was no id assigned yet. If this comp
onent was created dynamically (i.e. not by a JSP tag) you should assign it an explicit static id or assign it the id you get from
the createUniqueId from the current UIViewRoot component right after creation!
15:23:54,833 ERROR [TaskMgmtSession] org.hibernate.TransientObjectException: object references an unsaved transient instance - sav
e the transient instance before flushing: org.jbpm.taskmgmt.def.Task
15:23:54,833 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
javax.faces.el.EvaluationException: Cannot get value for expression '#{homeBean.taskInstances}'
at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:399)
at javax.faces.component.UIData.getValue(UIData.java:779)
at javax.faces.component.UIData.createDataModel(UIData.java:545)
at javax.faces.component.UIData.getDataModel(UIData.java:534)
at javax.faces.component.UIData.getRowCount(UIData.java:103)
at org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:124)
at org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:94)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:319)
at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:343)
at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:251)
at org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
at org.apache.jsp.home_jsp._jspx_meth_h_dataTable_0(org.apache.jsp.home_jsp:205)
at org.apache.jsp.home_jsp._jspx_meth_f_view_0(org.apache.jsp.home_jsp:124)
at org.apache.jsp.home_jsp._jspService(org.apache.jsp.home_jsp:76)
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:322)
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.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:56)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jbpm.web.JbpmContextFilter.doFilter(JbpmContextFilter.java:83)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
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.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
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:856)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: org.jbpm.webapp.bean.HomeBean
at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:78)
at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:532)
at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:380)
... 57 more
Caused by: javax.faces.el.EvaluationException: Bean: org.jbpm.webapp.bean.HomeBean, property: taskInstances
at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:404)
at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:71)
... 60 more
Caused by: java.lang.reflect.InvocationTargetException
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:585)
at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:400)
... 61 more
Caused by: org.jbpm.JbpmException: couldn't get task instances list for actor 'grover'
at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:63)
at org.jbpm.webapp.bean.HomeBean.getTaskInstances(HomeBean.java:49)
... 66 more
Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance b
efore flushing: org.jbpm.taskmgmt.def.Task
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:216)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:108)
at org.hibernate.type.ManyToOneType.isDirty(ManyToOneType.java:221)
at org.hibernate.type.TypeFactory.findDirty(TypeFactory.java:476)
at org.hibernate.persister.entity.AbstractEntityPersister.findDirty(AbstractEntityPersister.java:2802)
at org.hibernate.event.def.DefaultFlushEntityEventListener.dirtyCheck(DefaultFlushEntityEventListener.java:457)
at org.hibernate.event.def.DefaultFlushEntityEventListener.isUpdateNecessary(DefaultFlushEntityEventListener.java:180)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:104)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:195)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76
)
at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:35)
at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.prepareQueries(SessionImpl.java:1071)
at org.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:1061)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1010)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74)
at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:59)
... 67 more
15:23:54,833 DEBUG [JbpmContext] closing JbpmContext
Thanks for your help.
Regards,
Maurice