[jboss-user] [JBoss Seam] - Re: one question about Interceptor

[diyun2008]

You probably misunderstand.
The comlete code is here:

import javax.faces.event.PhaseId;
  | 
  | import org.jboss.seam.annotations.Interceptor;
  | import org.jboss.seam.contexts.Contexts;
  | import org.jboss.seam.contexts.Lifecycle;
  | import org.jboss.seam.interceptors.BijectionInterceptor;
  | import org.jboss.seam.interceptors.BusinessProcessInterceptor;
  | import org.jboss.seam.interceptors.ConversationInterceptor;
  | import org.jboss.seam.interceptors.RemoveInterceptor;
  | import org.jboss.seam.interceptors.ValidationInterceptor;
  | 
  | @Interceptor(around={BijectionInterceptor.class, ValidationInterceptor.class, 
  |                      ConversationInterceptor.class, BusinessProcessInterceptor.class},
  |              within=RemoveInterceptor.class)
  | public class LoggedInInterceptor
  | {
  | 
  |    @AroundInvoke
  |    public Object checkLoggedIn(InvocationContext invocation) throws Exception
  |    {
  |       boolean isLoggedIn = Contexts.getSessionContext().get("loggedIn")!=null;
  |       if ( Lifecycle.getPhaseId()==PhaseId.INVOKE_APPLICATION )
  |       {
  |          if (isLoggedIn) 
  |          {
  |             return invocation.proceed();
  |          }
  |          else 
  |          {
  |             return "login";
  |          }
  |       }
  |       else
  |       {
  |          if ( isLoggedIn )
  |          {
  |             return invocation.proceed();
  |          }
  |          else
  |          {
  |             Method method = invocation.getMethod();
  |             if ( method.getReturnType().equals(void.class) )
  |             {
  |                return null;
  |             }
  |             else
  |             {
  |                return method.invoke( invocation.getTarget(),  invocation.getParameters() );
  |             }
  |          }
  |       }
  |    }
  | 
  | }


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