Exception Handling Problem (2.0.1.GA) - empty view-id

[rodrigoy]

I'm just following the doc. My pages.xml has:

    <exception class="domain.exception.ValidationException">
        <redirect>
            <message>Ocorreram erros de validação.</message>
        </redirect>
    </exception>

I'm getting this:

javax.el.ELException: Expression cannot be null
     at org.jboss.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:92)
     at org.jboss.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:151)
     at org.jboss.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:195)
     at org.jboss.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:68)
     at org.jboss.seam.el.SeamExpressionFactory.createValueExpression(SeamExpressionFactory.java:98)
     at org.jboss.seam.core.Expressions$1.createExpression(Expressions.java:106)
     at org.jboss.seam.core.Expressions$1.toUnifiedValueExpression(Expressions.java:98)
     at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:111)
     at org.jboss.seam.exception.ConfigRedirectHandler.getViewId(ConfigRedirectHandler.java:50)
     at org.jboss.seam.exception.RedirectHandler.handle(RedirectHandler.java:33)
     at org.jboss.seam.exception.Exceptions.handle(Exceptions.java:75)

I see that default pages.xml and pages2.0.xdt changed the view-id attribute definition. I just need that this Exception redirects for the current view. Is it possible?

Chers...

[pmuir]

No.

[rodrigoy]

It was working on 1.2.1. What happened?

[alessandro]

Hi Rodrigo !
     
I use filters for this:

     public void doFilter(ServletRequest request,
               ServletResponse response,  FilterChain chain) throws IOException, ServletException {
          
         if (filterConfig != null){           
          
          //declarar um request "final", pq a classe ContextualHttpServletRequest exige que seja final
         final HttpServletRequest  finalRequest= (HttpServletRequest)request;
          
          //classe interna necessária para que um servlet consiga ver qualquer componente Seam  
         new ContextualHttpServletRequest(finalRequest) { 

                @Override 
                public void process() throws Exception {

                      //PreviousUri é um wrapper simples que encapsula o endereço da requisicao em um componente Seam 
                   PreviousUri previousUri = (PreviousUri) org.jboss.seam.contexts.Contexts.getSessionContext().get("previousUri");
                    if(previousUri==null)previousUri = new PreviousUri();
                    previousUri.setValor(finalRequest.getRequestURI().substring(finalRequest.getContextPath().length()));
                    
                    //setando o componente no contexto Seam, agora é só usa-lo no pages.xml para redirecionamentos
                    org.jboss.seam.contexts.Contexts.getSessionContext().set("previousUri",previousUri);                       
                } 
             }.run();     
             chain.doFilter(request, response);
         } 
     }

A simple wrapper component:

@Name("previousUri")
public class PreviousUri {
     
     private String valor;

     public PreviousUri() {
     }
     
     

     public String getValor() {
          return valor;
     }



     public void setValor(String valor) {
          this.valor = valor;
     }



     @Override
     public String toString() {
          return valor;
     }
}

The pages.xml:

    <exception class="br.com.siq.infrastructure.exception.SiqFtpException">    
        <redirect view-id="#{previousUri}" >
            <message severity="ERROR">#{org.jboss.seam.handledException.message}</message>
        </redirect>
    </exception>