[ 
https://jira.nuxeo.com/browse/NXP-8552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=108858#comment-108858
 ] 

Anahide Tchertchian edited comment on NXP-8552 at 1/4/12 2:19 PM:
------------------------------------------------------------------

stack trace:
{code}
null

            javax.servlet.ServletException: 
#{taskActions.acceptTask(dashboardItem.task)}: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.nuxeo.wss.servlet.BaseWSSFilter.doFilter(BaseWSSFilter.java:135)
        at 
org.nuxeo.wss.servlet.FailSafeWSSFilter.doFilter(FailSafeWSSFilter.java:55)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
        at 
org.nuxeo.ecm.platform.ui.web.multipart.MultipartFilter.doFilter(MultipartFilter.java:73)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
        at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
        at 
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
        at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
        at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.ui.web.rest.FancyURLFilter.doFilter(FancyURLFilter.java:131)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.wi.filter.WIRequestFilter.doFilter(WIRequestFilter.java:120)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoRequestControllerFilter.doFilter(NuxeoRequestControllerFilter.java:141)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:518)
        at 
org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:35)
        at 
org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:167)
        at 
org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:33)
        at 
org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:340)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.platform.login.web.LoginStackCleaner.doFilter(LoginStackCleaner.java:49)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:79)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:59)
        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:128)
        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:293)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
        at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
        at java.lang.Thread.run(Thread.java:679)
Caused by: javax.faces.FacesException: 
#{taskActions.acceptTask(dashboardItem.task)}: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
        at javax.faces.component.UICommand.broadcast(UICommand.java:387)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
        at 
org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296)
        at 
org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
        at 
org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466)
        at 
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at 
org.nuxeo.ecm.platform.ui.web.lifecycle.NuxeoLifeCycleImpl.execute(NuxeoLifeCycleImpl.java:83)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
        ... 57 more
Caused by: javax.faces.el.EvaluationException: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
        at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
        ... 71 more
Caused by: org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.endTask(TaskServiceImpl.java:246)
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.acceptTask(TaskServiceImpl.java:182)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean.acceptTask(TaskActionsBean.java:144)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean.acceptTask(TaskActionsBean.java:138)
        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:616)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
        at 
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
        at 
org.nuxeo.ecm.platform.ui.web.invalidations.DocumentContextInvalidatorInterceptor.aroundInvoke(DocumentContextInvalidatorInterceptor.java:53)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.nuxeo.ecm.platform.ui.web.util.NuxeoBijectionInterceptor.aroundInvoke(NuxeoBijectionInterceptor.java:68)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
        at 
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
        at 
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean_$$_javassist_76.acceptTask(TaskActionsBean_$$_javassist_76.java)
        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:616)
        at 
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:329)
        at 
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:274)
        at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)
        at org.jboss.el.parser.AstMethodSuffix.invoke(AstMethodSuffix.java:65)
        at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
        at 
org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
        at 
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
        at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
        ... 72 more
Caused by: java.lang.UnsupportedOperationException
        at 
org.nuxeo.ecm.plateform.jbpm.core.task.JBPMTaskWrapper.setVariable(JBPMTaskWrapper.java:224)
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.endTask(TaskServiceImpl.java:210)
        ... 106 more
{code}

      was (Author: atchertchian):
    {code}
stack trace:
null

            javax.servlet.ServletException: 
#{taskActions.acceptTask(dashboardItem.task)}: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.nuxeo.wss.servlet.BaseWSSFilter.doFilter(BaseWSSFilter.java:135)
        at 
org.nuxeo.wss.servlet.FailSafeWSSFilter.doFilter(FailSafeWSSFilter.java:55)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
        at 
org.nuxeo.ecm.platform.ui.web.multipart.MultipartFilter.doFilter(MultipartFilter.java:73)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
        at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
        at 
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
        at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
        at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
        at 
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
        at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.ui.web.rest.FancyURLFilter.doFilter(FancyURLFilter.java:131)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.wi.filter.WIRequestFilter.doFilter(WIRequestFilter.java:120)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.requestcontroller.filter.NuxeoRequestControllerFilter.doFilter(NuxeoRequestControllerFilter.java:141)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilterInternal(NuxeoAuthenticationFilter.java:518)
        at 
org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:35)
        at 
org.nuxeo.ecm.platform.ui.web.auth.oauth.NuxeoOAuthFilter.doFilter(NuxeoOAuthFilter.java:167)
        at 
org.nuxeo.ecm.platform.ui.web.auth.service.NuxeoAuthFilterChain.doFilter(NuxeoAuthFilterChain.java:33)
        at 
org.nuxeo.ecm.platform.ui.web.auth.NuxeoAuthenticationFilter.doFilter(NuxeoAuthenticationFilter.java:340)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.platform.login.web.LoginStackCleaner.doFilter(LoginStackCleaner.java:49)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.exceptionhandling.NuxeoExceptionFilter.doFilter(NuxeoExceptionFilter.java:79)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at 
org.nuxeo.ecm.platform.web.common.encoding.NuxeoEncodingFilter.doFilter(NuxeoEncodingFilter.java:59)
        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:128)
        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:293)
        at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
        at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
        at java.lang.Thread.run(Thread.java:679)
Caused by: javax.faces.FacesException: 
#{taskActions.acceptTask(dashboardItem.task)}: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
        at javax.faces.component.UICommand.broadcast(UICommand.java:387)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.nuxeo.ecm.platform.ui.web.binding.alias.UIAliasHolder.broadcast(UIAliasHolder.java:86)
        at 
org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
        at 
org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296)
        at 
org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
        at 
org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466)
        at 
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
        at 
org.nuxeo.ecm.platform.ui.web.lifecycle.NuxeoLifeCycleImpl.execute(NuxeoLifeCycleImpl.java:83)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
        ... 57 more
Caused by: javax.faces.el.EvaluationException: 
org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
        at 
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
        ... 71 more
Caused by: org.nuxeo.ecm.core.api.ClientRuntimeException: 
java.lang.UnsupportedOperationException
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.endTask(TaskServiceImpl.java:246)
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.acceptTask(TaskServiceImpl.java:182)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean.acceptTask(TaskActionsBean.java:144)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean.acceptTask(TaskActionsBean.java:138)
        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:616)
        at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
        at 
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
        at 
org.nuxeo.ecm.platform.ui.web.invalidations.DocumentContextInvalidatorInterceptor.aroundInvoke(DocumentContextInvalidatorInterceptor.java:53)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.nuxeo.ecm.platform.ui.web.util.NuxeoBijectionInterceptor.aroundInvoke(NuxeoBijectionInterceptor.java:68)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
        at 
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
        at 
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
        at 
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166)
        at 
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
        at 
org.nuxeo.ecm.platform.task.web.TaskActionsBean_$$_javassist_76.acceptTask(TaskActionsBean_$$_javassist_76.java)
        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:616)
        at 
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:329)
        at 
org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:274)
        at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)
        at org.jboss.el.parser.AstMethodSuffix.invoke(AstMethodSuffix.java:65)
        at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
        at 
org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
        at 
com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
        at 
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
        ... 72 more
Caused by: java.lang.UnsupportedOperationException
        at 
org.nuxeo.ecm.plateform.jbpm.core.task.JBPMTaskWrapper.setVariable(JBPMTaskWrapper.java:224)
        at 
org.nuxeo.ecm.platform.task.core.service.TaskServiceImpl.endTask(TaskServiceImpl.java:210)
        ... 106 more
{code}
  
> Fix crash when approving workflow task
> --------------------------------------
>
>                 Key: NXP-8552
>                 URL: https://jira.nuxeo.com/browse/NXP-8552
>             Project: Nuxeo Enterprise Platform
>          Issue Type: Bug
>    Affects Versions: 5.5
>         Environment: Ubuntu-server 11.10 in virtualbox 4 using 3 cores and 
> 6GB ram
>            Reporter: john
>
> I did make a workflow. in this workflow i select a user. When i log in as 
> that user i go to my task and see the workflow. When i Approve the document 
> here, the approving is working fine. when i do the same but go to the summary 
> tab i also got the option to approve the document when i press approve i get 
> the following error.

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