2 Replies Latest reply on Dec 18, 2006 12:51 AM by adsf adsf

    Question regarding EL method parameters

    adsf adsf Newbie

      I have a page showing an edit form for an entity. The page shows several lists all in one form - therefore i can't use the @DataModel stuff - and a few buttons for almost every list item.

      My problem is that i can't tell my bean the index in the list when a button is clicked.

      My JSF page looks like this (just a snippet):

      <tr>
       <td class="usecase_attribute">Preconditions:</td>
       <td class="usecase_attribute_content">
       <c:if test="#{not empty usecase.preconditions}">
       <ul>
       <c:forEach items="#{usecase.preconditions}" var="condition" varStatus="status">
       <li>
       Status: #{status.index}
       <h:inputTextarea value="#{condition.description}"/>
       <h:commandButton value="Remove Precondition" action="#{usecasesBean.removeCondition(usecase.preconditions, status.index)}"/>
       </li>
       </c:forEach>
       </ul>
       </c:if>
       <h:commandButton value="Add Precondition" action="#{usecasesBean.addCondition(usecase.preconditions)}"/>
       </td>
      </tr>

      When i click on 'Remove Precondition' i get:
      20:17:36,708 ERROR [STDERR] 17.12.2006 20:17:36 com.sun.faces.lifecycle.InvokeApplicationPhase execute
      WARNUNG: For input string: "index"
      java.lang.NumberFormatException: For input string: "index"
       at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
       at java.lang.Integer.parseInt(Integer.java:447)
       at java.lang.Integer.parseInt(Integer.java:497)
       at javax.el.ListELResolver.toInteger(ListELResolver.java:364)
       at javax.el.ListELResolver.getValue(ListELResolver.java:159)
       at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:135)
       at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
       at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
       at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.evaluateParams(MethodExpressionHelper.java:130)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.invokeTheExpression(MethodExpressionHelper.java:101)
       at org.jboss.seam.ui.facelet.ParamMethodExpression.invoke(ParamMethodExpression.java:62)
       at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
       at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
       at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:95)
       at javax.faces.component.UICommand.broadcast(UICommand.java:383)
       at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:448)
       at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
       at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
       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:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
       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: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:619)
      20:17:36,728 ERROR [STDERR] 17.12.2006 20:17:36 com.sun.faces.lifecycle.LifecycleImpl phase
      WARNUNG: executePhase(INVOKE_APPLICATION 5,com.sun.faces.context.FacesContextImpl@10de2bd) threw exception
      javax.faces.FacesException: For input string: "index"
       at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:105)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
       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:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
       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: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:619)
      Caused by: java.lang.NumberFormatException: For input string: "index"
       at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
       at java.lang.Integer.parseInt(Integer.java:447)
       at java.lang.Integer.parseInt(Integer.java:497)
       at javax.el.ListELResolver.toInteger(ListELResolver.java:364)
       at javax.el.ListELResolver.getValue(ListELResolver.java:159)
       at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:135)
       at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
       at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
       at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.evaluateParams(MethodExpressionHelper.java:130)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.invokeTheExpression(MethodExpressionHelper.java:101)
       at org.jboss.seam.ui.facelet.ParamMethodExpression.invoke(ParamMethodExpression.java:62)
       at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
       at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
       at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:95)
       at javax.faces.component.UICommand.broadcast(UICommand.java:383)
       at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:448)
       at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
       at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
       ... 28 more
      20:17:36,754 ERROR [SeamExceptionFilter] could not destroy contexts
      java.lang.IllegalStateException: No phase id bound to current thread (make sure you do not have two SeamPhaseListener instances installed)
       at org.jboss.seam.contexts.PageContext.getPhaseId(PageContext.java:153)
       at org.jboss.seam.contexts.PageContext.isRenderResponsePhase(PageContext.java:165)
       at org.jboss.seam.contexts.PageContext.getCurrentReadableMap(PageContext.java:76)
       at org.jboss.seam.contexts.PageContext.get(PageContext.java:66)
       at org.jboss.seam.contexts.Contexts.lookupInStatefulContexts(Contexts.java:160)
       at org.jboss.seam.Component.getInstance(Component.java:1597)
       at org.jboss.seam.Component.getInstance(Component.java:1577)
       at org.jboss.seam.Component.getInstance(Component.java:1572)
       at org.jboss.seam.core.PersistenceContexts.instance(PersistenceContexts.java:48)
       at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.entityRefsToIds(ManagedEntityIdentityInterceptor.java:52)
       at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:45)
       at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.OutcomeInterceptor.interceptOutcome(OutcomeInterceptor.java:23)
       at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.RollbackInterceptor.rollbackIfNecessary(RollbackInterceptor.java:33)
       at sun.reflect.GeneratedMethodAccessor88.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(ConversationInterceptor.java:51)
       at sun.reflect.GeneratedMethodAccessor84.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.BusinessProcessInterceptor.manageBusinessProcessContext(BusinessProcessInterceptor.java:50)
       at sun.reflect.GeneratedMethodAccessor83.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:28)
       at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:38)
       at sun.reflect.GeneratedMethodAccessor81.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:144)
       at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
       at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
       at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:144)
       at org.jboss.seam.intercept.JavaBeanInterceptor.intercept(JavaBeanInterceptor.java:79)
       at com.example.usecases.web.MyPageflow$$EnhancerByCGLIB$$ed9ddf4a.clearDirty(<generated>)
       at org.jboss.seam.contexts.Lifecycle.isAttributeDirty(Lifecycle.java:459)
       at org.jboss.seam.contexts.ServerConversationContext.flush(ServerConversationContext.java:219)
       at org.jboss.seam.contexts.Lifecycle.flushAndDestroyContexts(Lifecycle.java:357)
       at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:282)
       at org.jboss.seam.servlet.SeamExceptionFilter.endWebRequestAfterException(SeamExceptionFilter.java:81)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:57)
       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: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:619)
      20:17:36,768 ERROR [SeamExceptionFilter] uncaught exception handled by Seam
      javax.servlet.ServletException: For input string: "index"
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
       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: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:619)
      20:17:36,769 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
      java.lang.NumberFormatException: For input string: "index"
       at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
       at java.lang.Integer.parseInt(Integer.java:447)
       at java.lang.Integer.parseInt(Integer.java:497)
       at javax.el.ListELResolver.toInteger(ListELResolver.java:364)
       at javax.el.ListELResolver.getValue(ListELResolver.java:159)
       at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:135)
       at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
       at com.sun.el.parser.AstValue.getValue(AstValue.java:117)
       at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.evaluateParams(MethodExpressionHelper.java:130)
       at org.jboss.seam.ui.facelet.MethodExpressionHelper.invokeTheExpression(MethodExpressionHelper.java:101)
       at org.jboss.seam.ui.facelet.ParamMethodExpression.invoke(ParamMethodExpression.java:62)
       at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
       at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:77)
       at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:95)
       at javax.faces.component.UICommand.broadcast(UICommand.java:383)
       at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:448)
       at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
       at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
       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:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
       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: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:619)


      The method is like this:
      public void removeCondition(List<Condition> conditions, String index) {
       conditions.remove(Integer.parseInt(index));
      }

      I also tried it with condition instead of status.index but this doesn't work either. All i would need is to drop some hint in my method about the index of the entry in the list so it knows on what to work - status.index shows this index but doesn't work as method parameter.

      So can someone please give me a hint how to solve this.

      Thanks a lot in advance.