[jboss-user] [JBoss Seam] - Re: handling exceptions

[markfoerstein]

Gavin, Im facing the same problem. Im using 1.2.1GA

The only difference is that Im throwing in the stateful bean a specific exception I created...

  | @ApplicationException(rollback=true)
  | public class GeneralApplicationException extends RuntimeException {
  | 
  | 	public GeneralApplicationException(String message) {
  | 		super(message);
  | 	}
  | }
  | 

...and digging into the stack to get the messages with a class I also created (ExceptionMessages):

  | try {
  | 	entityManager.persist(instance);
  | 	entityManager.flush();
  | } catch (RuntimeException e){
  | 	throw new GeneralApplicationException(ExceptionMessages.getMessage(e));
  | }
  | 

Then the message from my GeneralApplicationException is nicely presented in a error page (fragment from pages.xml):

  |     <exception class="com.sphere.consultoria.exceptions.GeneralApplicationException">
  |         <end-conversation/>
  |         <redirect view-id="/error.xhtml">
  |             <param name="icon" value="error_icon.gif"/>
  |         </redirect>
  |     </exception>
  | 

My goal would be not having to use my GeneralApplicationException at all, and map every exception with their specific messages into pages.xml. Unfortunately, that's not possible, because the best I can get is the javax.persistence.PersistenceException or treat every else with a catch-all tag:

  |     <exception>
  |         <end-conversation/>
  |         <redirect view-id="/error.xhtml">
  |             <message>Ocorreu um erro inesperado. Se o problema persistir, consulte o administrador do sistema.</message>
  |             <param name="icon" value="error_icon.gif"/>
  |         </redirect>
  |     </exception>
  | 
  |     <exception class="javax.persistence.PersistenceException">
  |         <end-conversation/>
  |         <redirect view-id="/error.xhtml">
  |             <message>Ocorreu um erro ao tentar persistir as informações no banco de dados.</message>
  |             <param name="icon" value="error_icon.gif"/>
  |         </redirect>
  |     </exception>
  | 

It would be nice if I could map ContraintViolationException, for example, with its specific message.

Is it possible? I can't find a solution on this... tried searching the forum but only found similar posts...

Thanks for any help.

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