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IdentityService implementation
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reply from <a href="http://community.jboss.org/people/Herbst">Sebastian Herbst</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/546461#546461">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p>I've tried to see when this error happens exactly. It allways appears, when the processdefinition node contains candidate-user/group. As long this tag is missing findPersonalTasks(..), takeTask or completeTask work fine. When it comes to a node containing ths tags it crashes with the following error. I don't see why this is happening. (I don't want to use the juel libary because it conflicts with some other of my libaries)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Java:</p><pre class="jive-pre"><code class="jive-code jive-java"> taskService.takeTask(task.getId(), <font color="red">"admin"</font>);<font color="darkgreen">//user.getName());</font>
System.out.println(<font color="red">"admin : "</font> + taskService.findPersonalTasks(<font color="red">"admin"</font>).toString());
System.out.println(taskService.getOutcomes(task.getId()).toString() + <font color="red">" <-- "</font> + transitionName);
taskService.completeTask(task.getId(), transitionName);     <font color="darkgreen">//here it crashes(nextState(TaskJbpmProcess.java:121)</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Error:</p><pre class="jive-pre"><code class="jive-code jive-java">javax.servlet.ServletException: Servlet execution threw an exception
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
    at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
    at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
    at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at web.SessionInfoFilter.doFilter(SessionInfoFilter.java:159)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: de/odysseus/el/util/SimpleResolver
    at org.jbpm.pvm.internal.script.JuelScriptEngineFactory.getScriptEngine(JuelScriptEngineFactory.java:185)
    at javax.script.ScriptEngineManager.getEngineByName(Unknown Source)
    at org.jbpm.pvm.internal.script.ScriptManager.evaluate(ScriptManager.java:111)
    at org.jbpm.pvm.internal.script.ScriptManager.evaluateExpression(ScriptManager.java:90)
    at org.jbpm.pvm.internal.model.ExecutionImpl.resolveAssignmentExpression(ExecutionImpl.java:772)
    at org.jbpm.pvm.internal.model.ExecutionImpl.initializeAssignments(ExecutionImpl.java:735)
    at org.jbpm.jpdl.internal.activity.TaskActivity.execute(TaskActivity.java:95)
    at org.jbpm.jpdl.internal.activity.TaskActivity.execute(TaskActivity.java:58)
    at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform(ExecuteActivity.java:60)
    at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync(ExecutionImpl.java:656)
    at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation(ExecutionImpl.java:616)
    at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:417)
    at org.jbpm.pvm.internal.model.ExecutionImpl.signal(ExecutionImpl.java:403)
    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.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:157)
    at org.jbpm.pvm.internal.model.ExecutionImpl$$EnhancerByCGLIB$$b8b5633c.signal(<generated>)
    at org.jbpm.pvm.internal.task.TaskImpl.complete(TaskImpl.java:194)
    at org.jbpm.pvm.internal.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:65)
    at org.jbpm.pvm.internal.cmd.CompleteTaskCmd.execute(CompleteTaskCmd.java:32)
    at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
    at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute(StandardTransactionInterceptor.java:54)
    at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
    at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
    at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:55)
    at org.jbpm.pvm.internal.svc.SkipInterceptor.execute(SkipInterceptor.java:43)
    at org.jbpm.pvm.internal.svc.TaskServiceImpl.completeTask(TaskServiceImpl.java:96)
    at jBPM.TaskJbpmProcess.nextState(TaskJbpmProcess.java:121)
    at jBPM.TaskJbpmProcess.processAction(TaskJbpmProcess.java:79)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:77)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:746)
    at javax.faces.component.UICommand.broadcast(UICommand.java:368)
    at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:55)
    at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:329)
    at org.ajax4jsf.component.AjaxViewRoot.broadcastEventsForPhase(AjaxViewRoot.java:304)
    at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:261)
    at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:474)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    ... 20 more
</code></pre></div>
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