[jboss-user] [JBoss Seam] - Can't pass action successfully to custom source tag

steveant do-not-reply at jboss.com
Sun Mar 4 15:48:04 EST 2007


Hi,

I was debating whether this was a facelets or Seam question:

I've created a custom commandLink tag and I'm using it in a seam pageflow.  The id & value attributes are passed successfully but the action attribute is not.  Here are the pertinent code segments:
bdex.taglib.xml
  | . . .
  | <tag>
  | 	<tag-name>commandButton</tag-name>
  | 	<source>tags/commandButton.xhtml</source>
  | </tag>
  | . . .
  | 
  | tags/commandButton.xhtml:
  | . . .
  | 	<h:commandLink id="#{id}" action="#{action}" value="#{value}" 
  | styleClass="bdexCommandButtonLink" style="font-weight: bold; #{style}" />
  | 
  | client file - login.xhtml:
  | 
  | <bdex:commandButton id="loginButton" value="Login" action="login-user" /> 
  | 
  | 

The following errors are reported in the log once the button is clicked:

javax.faces.FacesException: Error calling action method of component with id loginForm:loginButton
	at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
	at javax.faces.component.UICommand.broadcast(UICommand.java:106)
	at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
	at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
	at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.renderCycle(BlockingServlet.java:456)
	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.receiveUpdates(BlockingServlet.java:444)
	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.executeRequest(BlockingServlet.java:324)
	at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:186)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.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.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
	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:595)
Caused by: javax.faces.el.EvaluationException: /WEB-INF/tags/commandButton.xhtml @17,79 action="#{action}": Identity 'action' does not reference a MethodExpression instance, returned type: java.lang.String
	at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
	at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)

Any help would be greatly appreciated.  I'm new to Seam/JSF/Seam so I apologize if this turns out to be a trivial issue.

Regards,
Steve




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