Hi. I run into one problem when I use overridden methods in a class that extends from a parameterized class. If I declare in the superclass one method, then I override such method in the specific type subclass, and then I use this method as an action, I get this exception:
| javax.faces.el.EvaluationException: More than one method matched #{userAction.select(userItem)}. Method name or number of p | arams must be unique. | Here is my code: Super class: | public class UserActionT<T> implements Serializable { | | @In | private EntityManager entityManager; | | private T entity; | | | @Begin(ifOutcome = "Success") | public String select(T selectedUser) { | try { | setInstance(entityManager.find(getEntityClass(), getId(selectedUser))); | return "Success"; | } catch (EntityNotFoundException e) { | return "Fail"; | } | } | | public void setInstance(T instance) { | entity = instance; | } | | public T getInstance(){ | return entity; | } | protected Class<T> getEntityClass() { | return (Class<T>) getInstance().getClass(); | } | private Object getId(Object instance) { | Object id = null; | if (instance.getClass().isAnnotationPresent(Entity.class)) { | for (Field field : instance.getClass().getDeclaredFields()) { | if (field.isAnnotationPresent(Id.class)) { | try { | field.setAccessible(true); | id = field.get(instance); | } catch (IllegalAccessException e) { | throw new IllegalArgumentException("The object instance must have an @Id field"); | } | | } | } | } else { | throw new IllegalArgumentException("The object instance must be an annotated @Entity class"); | } | return id; | } | @End | public String cancel() { | return "Success"; | } | | Sub class: | @Name("userAction") | @Scope(ScopeType.CONVERSATION) | @Restrict("#{s:hasRole('admin')}") | public class UserActionExtended extends UserActionT<User> { | | @In(required = false) | @Out(required = false) | private User user; | | | | @Override | @Begin(ifOutcome = "Success") | public String select(User selectedUser) { | return super.select(selectedUser); | } | | | @Override | @End | public String cancel() { | return "userList"; | } | | | @Override | public void setInstance(User instance) { | user = instance; | } | | @Override | public User getInstance() { | return user; | } | } | .xhtml | //inside a column of a dataTable which var name is userItem | <s:link value="#{messages['Common.view']}" action="#{userAction.select(userItem)}"/> | pages.xml | <page view-id="/user/list.xhtml"> | <restrict>#{s:hasRole('admin')}</restrict> | <end-conversation/> | <navigation from-action="#{userAction.select(userItem)}"> | <rule if-outcome="Success"> | <redirect view-id="/user/edit.xhtml"/> | </rule> | <rule if-outcome="Fail"> | <redirect view-id="/user/list.xhtml"/> | </rule> | </navigation> | </page> | | I was having similar problems related to javassist (duplicated method exception), but I solved this updating the thirdparty-all.jar with the javassit 3.4, and these exceptions disappear. At this time the problem seems somtehing related to EL expressions, but I don't know what exactly is. Maybe someone has some workaround for this problem, or even better knows how can I make this work. Any help is highly appreciated. Thanks in advance. Finally: My environment: Seam 1.2.1.GA ajax4jsf 1.1.1 richfaces 3.0.1 Tomcat 5.5.17 The exception stacktrace is: | 21:50:17,992 ERROR [SeamPhaseListener] uncaught exception | javax.faces.el.EvaluationException: More than one method matched #{userAction.select(userItem)}. Method name or number of p | arams must be unique. | at org.jboss.seam.actionparam.ActionParamBindingHelper.findParamTypes(ActionParamBindingHelper.java:104) | at org.jboss.seam.actionparam.ActionParamBindingHelper.invokeTheExpression(ActionParamBindingHelper.java:55) | at org.jboss.seam.actionparam.ActionParamMethodBinding.invoke(ActionParamMethodBinding.java:75) | at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:148) | at org.jboss.seam.core.Pages.callAction(Pages.java:499) | at org.jboss.seam.core.Pages.enterPage(Pages.java:282) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.enterPage(AbstractSeamPhaseListener.java:265) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.beforeRender(AbstractSeamPhaseListener.java:203) | at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:57) | at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:73) | at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:126) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:126) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:248) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) | at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84) | 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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) | 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:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:66 | 4) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Thread.java:595) | 21:50:18,008 ERROR [DebugPageHandler] redirecting to debug page | javax.faces.el.EvaluationException: More than one method matched #{userAction.select(userItem)}. Method name or number of p | arams must be unique. | at org.jboss.seam.actionparam.ActionParamBindingHelper.findParamTypes(ActionParamBindingHelper.java:104) | at org.jboss.seam.actionparam.ActionParamBindingHelper.invokeTheExpression(ActionParamBindingHelper.java:55) | at org.jboss.seam.actionparam.ActionParamMethodBinding.invoke(ActionParamMethodBinding.java:75) | at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:148) | at org.jboss.seam.core.Pages.callAction(Pages.java:499) | at org.jboss.seam.core.Pages.enterPage(Pages.java:282) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.enterPage(AbstractSeamPhaseListener.java:265) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.beforeRender(AbstractSeamPhaseListener.java:203) | at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:57) | at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:73) | at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:126) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:140) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:126) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:248) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63) | at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79) | at org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49) | at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84) | 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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) | 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:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:66 | 4) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Thread.java:595) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4041735#4041735 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4041735 _______________________________________________ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user