No task associated. Call businessProcess.startTask()

[idireneyoucef]

i use activiti with jsf, when i start my process it's work but just for the first task  so when i accomplishe my request and click button with this following code   

  <h:commandButton value="Submit" action="#{businessProcess.completeTask(true)}"  /> i have this erreur

Avertissement: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
org.activiti.cdi.ActivitiCdiException: No task associated. Call businessProcess.startTask() first.
    at org.activiti.cdi.BusinessProcess.assertTaskAssociated(BusinessProcess.java:540)
    at org.activiti.cdi.BusinessProcess.completeTask(BusinessProcess.java:373)
    at org.activiti.cdi.BusinessProcess.completeTask(BusinessProcess.java:385)
    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 javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)
    at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)
    at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:257)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:248)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
    at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:39)
    at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
    at org.primefaces.application.DialogActionListener.processAction(DialogActionListener.java:45)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:100)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:744)

[gdharley]

It will be hard to offer any advice on this without a test case.

But, the message you are getting is typically thrown if you have not actually "started" the task.

A typical usage scenario might look like this:

1st unit of work ("process instantiation"):

conversation.begin();

...

businessProcess.setVariable("billingId", "1"); // setting variables before starting the process

businessProcess.startProcessByKey("billingProcess");

conversation.end();

2nd unit of work ("perform a user task"):

conversation.begin();

businessProcess.startTask(id); // now we have associated a task with the current conversation

...                            // this allows us to retrieve and change process variables

                              // and @BusinessProcessScoped beans

businessProcess.setVariable("billingDetails", "someValue"); // these changes are cached in the conversation

...

businessProcess.completeTask(); // now all changed process variables are flushed

conversation.end();

Notice, startTask() is called before completing the task.

Hope this helps,

Greg

bp3‌

[idireneyoucef]

hi and thanx,

problém not résolved 

  i start my process  from my controller like this 

 ProcessInstance inst = runtimeService.startProcessInstanceByKey("myProcess");

my jsf page look like this 

<f:view>

<f:metadata>
             <f:viewParam name="taskId" />
             <!-- start working on the usertask and starting a conversation -->
             <f:event type="preRenderView" listener="#{businessProcess.startTask(taskId, true)}" />
</f:metadata>

<h1>#{task.name}</h1>
<p><em>#{task.description}hhhhhhhhhhh</em></p>
<p><em>#{taskId}</em></p>

<h:form>
   <table>
        <tr>
         < td>client</td>
<td><h:inputText value="#{processVariables['client']}" disabled="true"/></td>
      </tr>
       <tr>
        <td>date courante</td>
        <td> <h:inputText value="#{processVariables['datecourante']}" disabled="true"/></td>
     </tr>
<tr>
<td>login user</td>
<td> <h:inputText value="#{processVariables['login']}" disabled="true"/></td>
</tr>

<tr>
<td></td>
<td>
<h:commandButton value="Submit" action="#{businessProcess.completeTask(true)}" />
</td>

</tr>

</table>
</h:form>
</f:view>

[gdharley]

I would attach a breakpoint to the startTask() method and make sure it is actually being called with the correct taskId from your preRender listener.

Greg

‌

[idireneyoucef]

the id of the current  task is null 

but on the Url  http://localhost:8080/reservation-web/demande1.jsf?taskId=25013  

when i complet the task  the error apears

No task associated. Call businessProcess.startTask() first.

there is in the link the id of the task

help if yoiu can pleas