[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-4247) Seam managed @Provider not registered

[Matthew Bowman (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBSEAM-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12472292#action_12472292 ] 

Matthew Bowman commented on JBSEAM-4247:
----------------------------------------

The log shows 'registering provider as Seam component: serviceExceptionMapper' however it is never actually registered.

I traced it to org.jboss.resteasy.spi.ResteasyProviderFactory.addExceptionMapper(ExceptionMapper):

{code}   
public void addExceptionMapper(ExceptionMapper provider)
   {
      providers.put(provider.getClass(), provider);
      PropertyInjectorImpl injector = new PropertyInjectorImpl(provider.getClass(), this);
      injector.inject(provider);
      Type[] intfs = provider.getClass().getGenericInterfaces();
      for (Type type : intfs)
      {
         if (type instanceof ParameterizedType)
         {
            ParameterizedType pt = (ParameterizedType) type;
            if (pt.getRawType().equals(ExceptionMapper.class))
            {
               exceptionMappers.put(Types.getRawType(pt.getActualTypeArguments()[0]), provider);
            }
         }
      }

   }
{/code}

In short, when it queries the provider class' generic interfaces, the Type[] array returned is that of the proxy and not the Seam component itself. Therefore, the check of "type instanceof ParameterizedType" never succeeds. In other words, it doesn't see the "... implements ExceptionMapper<E>" on the provider and hence is never actually added to the exceptionMappers map.

Hope this helps.

> Seam managed @Provider not registered
> -------------------------------------
>
>                 Key: JBSEAM-4247
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-4247
>             Project: Seam
>          Issue Type: Bug
>          Components: WS
>    Affects Versions: 2.1.2.GA
>            Reporter: Matthew Bowman
>            Assignee: Christian Bauer
>         Attachments: resteasy-debug.log
>
>
> Example:
> @Name("serviceExceptionMapper")
> @Scope(ScopeType.APPLICATION)
> @Provider
> public class ServiceExceptionMapper implements ExceptionMapper<ServiceException> {
>   public Resposne toResponse(ServiceException ex) {
>     return Response.noContent().build();
>   }
> }
> This custom ExceptionMapper provider will not be registered with ResteasyProviderFactory. If I remove the @Name + @Scope annotations, the provider is registered.
>    

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