Examples of javax.ws.rs.ext.ExceptionMapper

javax.ws.rs.ext.ExceptionMapper
Contract for a provider that maps Java exceptions to {@link javax.ws.rs.core.Response}. An implementation of this interface must be annotated with {@link Provider}. @see Provider @see javax.ws.rs.core.Response


    // ExceptionMapperContext
    
    public ExceptionMapper find(Class<? extends Throwable> c) {
        int distance = Integer.MAX_VALUE;
        ExceptionMapper selectedEm = null;
        for (ExceptionMapperType emt : emts) {
            int d = distance(c, emt.c);
            if (d < distance) { 
                distance = d;
                selectedEm = emt.em;

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     *
     * @param e the exception.
     * @return true if the exception was mapped, otherwise false.
     */
    public boolean mapException(Throwable e) {
        ExceptionMapper em = wa.getExceptionMapperContext().find(e.getClass());
        if (em == null) return false;


        if (request.isTracingEnabled()) {
            request.trace(String.format("matched exception mapper: %s -> %s",
                    ReflectionHelper.objectToString(e),
                    ReflectionHelper.objectToString(em)));
        }


        try {
            Response r = em.toResponse(e);
            if (r == null)
                r = Response.noContent().build();
            onException(e, r, true);
        } catch (MappableContainerException ex) {
            // If the exception mapper throws a MappableContainerException then

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    }


    public Response toResponse(EJBException exception) {
        final Exception cause = exception.getCausedByException();
        if (cause != null) {
            final ExceptionMapper mapper = providers.getExceptionMapper(cause.getClass());
            if (mapper != null) {
                return mapper.toResponse(cause);
            } else if (cause instanceof WebApplicationException) {
                return ((WebApplicationException)cause).getResponse();
            }
        }

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    }
    
    @SuppressWarnings("unchecked")
    public static Response convertFaultToResponse(Throwable ex, Message inMessage) {
        
        ExceptionMapper mapper = 
            ProviderFactory.getInstance(inMessage).createExceptionMapper(ex.getClass(), inMessage);
        if (mapper != null) {
            try {
                return mapper.toResponse(ex);
            } catch (Exception mapperEx) {
                mapperEx.printStackTrace();
                return Response.serverError().build();
            }
        }

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      if (exception.getCausedByException() == null)
      {
         return Response.serverError().build();
      }
      Class cause = exception.getCausedByException().getClass();
      ExceptionMapper mapper = providers.getExceptionMapper(cause);
      if (mapper == null)
      {
         return Response.serverError().build();
      }
      else
      {
         return mapper.toResponse(exception.getCausedByException());
      }
   }

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      return null;
   }


   protected void addExceptionMapper(Class<? extends ExceptionMapper> providerClass)
   {
      ExceptionMapper provider = createProviderInstance(providerClass);
      addExceptionMapper(provider, providerClass);
   }

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      if (exception.getCausedByException() == null)
      {
         return Response.serverError().build();
      }
      Class cause = exception.getCausedByException().getClass();
      ExceptionMapper mapper = providers.getExceptionMapper(cause);
      if (mapper == null)
      {
         return Response.serverError().build();
      }
      else
      {
         return mapper.toResponse(exception.getCausedByException());
      }
   }

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    * @param exception
    * @return
    */
   public Response executeExactExceptionMapper(Throwable exception)
   {
      ExceptionMapper mapper = providerFactory.getExceptionMappers().get(exception.getClass());
      if (mapper == null) return null;
      mapperExecuted = true;
      return mapper.toResponse(exception);
   }

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   }




   public Response executeExceptionMapperForClass(Throwable exception, Class clazz)
   {
      ExceptionMapper mapper = providerFactory.getExceptionMappers().get(clazz);
      if (mapper == null) return null;
      mapperExecuted = true;
      return mapper.toResponse(exception);
   }

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    * @param exception
    * @return true if an ExceptionMapper was found and executed
    */
   public Response executeExceptionMapper(Throwable exception)
   {
      ExceptionMapper mapper = null;


      Class causeClass = exception.getClass();
      while (mapper == null) {
         if (causeClass == null) break;
         mapper = providerFactory.getExceptionMappers().get(causeClass);
         if (mapper == null) causeClass = causeClass.getSuperclass();
      }
      if (mapper != null) {
         mapperExecuted = true;
         Response jaxrsResponse = mapper.toResponse(exception);
         if (jaxrsResponse == null) {
            jaxrsResponse = Response.status(204).build();
         }
         return jaxrsResponse;
      }

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