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

      return null;
   }


   public void addExceptionMapper(Class<? extends ExceptionMapper> provider)
   {
      ExceptionMapper writer = null;
      try
      {
         writer = provider.newInstance();
      }
      catch (InstantiationException e)

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            }
         }
         catch (WebApplicationException e)
         {
            Response errorResponse = ((WebApplicationException)e).getResponse();
            ExceptionMapper excmap = context.getProviders().getExceptionMapper(WebApplicationException.class);
            int errorStatus = errorResponse.getStatus();
            // should be some of 4xx status
            if (errorStatus < 500)
            {
               // Warn about error in debug mode only.
               if (LOG.isDebugEnabled() && e.getCause() != null)
               {
                  LOG.warn("WebApplication exception occurs.", e.getCause());
               }
            }
            else
            {
               if (e.getCause() != null)
               {
                  LOG.warn("WebApplication exception occurs.", e.getCause());
               }
            }
            if (errorResponse.getEntity() == null)
            {
               if (excmap != null)
               {
                  errorResponse = excmap.toResponse(e);
               }
               else
               {
                  if (e.getMessage() != null)
                  {

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    */
   @SuppressWarnings({"rawtypes", "unchecked"})
   private void handleException(GenericContainerResponse response, ApplicationContextImpl context, Throwable cause)
   {
      Class causeClazz = cause.getClass();
      ExceptionMapper excmap = context.getProviders().getExceptionMapper(causeClazz);
      while (causeClazz != null && excmap == null)
      {
         excmap = context.getProviders().getExceptionMapper(causeClazz);
         if (excmap == null)
         {
            causeClazz = causeClazz.getSuperclass();
         }
      }
      if (excmap != null)
      {
         if (LOG.isDebugEnabled())
         {
            // Hide error message if exception mapper exists.
            LOG.warn("Internal error occurs.", cause);
         }
         response.setResponse(excmap.toResponse(cause));
      }
      else
      {
         LOG.error("Internal error occurs.", cause);
         throw new UnhandledException(cause);

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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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         catch (Exception e)
         {
            if (e instanceof WebApplicationException)
            {
               Response errorResponse = ((WebApplicationException)e).getResponse();
               ExceptionMapper excmap = context.getProviders().getExceptionMapper(WebApplicationException.class);
               int errorStatus = errorResponse.getStatus();
               // should be some of 4xx status
               if (errorStatus < 500)
               {
                  // Warn about error in debug mode only.
                  if (LOG.isDebugEnabled() && e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               else
               {
                  if (e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               if (errorResponse.getEntity() == null)
               {
                  if (excmap != null)
                  {
                     errorResponse = excmap.toResponse(e);
                  }
                  else
                  {
                     if (e.getMessage() != null)
                     {
                        errorResponse = createErrorResponse(errorStatus, e.getMessage());
                     }
                  }
               }
               else
               {
                  if (errorResponse.getMetadata().getFirst(ExtHttpHeaders.JAXRS_BODY_PROVIDED) == null)
                  {
                     String jaxrsHeader = getJaxrsHeader(errorStatus);
                     if (jaxrsHeader != null)
                     {
                        errorResponse.getMetadata().putSingle(ExtHttpHeaders.JAXRS_BODY_PROVIDED, jaxrsHeader);
                     }
                  }
               }
               response.setResponse(errorResponse);
            }
            else if (e instanceof InternalException)
            {
               Throwable cause = e.getCause();
               Class causeClazz = cause.getClass();
               ExceptionMapper excmap = context.getProviders().getExceptionMapper(causeClazz);
               while (causeClazz != null && excmap == null)
               {
                  excmap = context.getProviders().getExceptionMapper(causeClazz);
                  if (excmap == null)
                  {
                     causeClazz = causeClazz.getSuperclass();
                  }
               }
               if (excmap != null)
               {
                  if (LOG.isDebugEnabled())
                  {
                     // Hide error message if exception mapper exists.
                     LOG.warn("Internal error occurs.", cause);
                  }
                  response.setResponse(excmap.toResponse(e.getCause()));
               }
               else
               {
                  LOG.error("Internal error occurs.", cause);
                  throw new UnhandledException(e.getCause());

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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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                            return waeResponse;
                        }
                    }


                    final long timestamp = tracingLogger.timestamp(ServerTraceEvent.EXCEPTION_MAPPING);
                    final ExceptionMapper mapper = runtime.exceptionMappers.findMapping(throwable);
                    if (mapper != null) {
                        processingContext.monitoringEventBuilder().setExceptionMapper(mapper);
                        processingContext.triggerEvent(RequestEvent.Type.EXCEPTION_MAPPER_FOUND);
                        try {
                            final Response mappedResponse = mapper.toResponse(throwable);


                            if (tracingLogger.isLogEnabled(ServerTraceEvent.EXCEPTION_MAPPING)) {
                                tracingLogger.logDuration(ServerTraceEvent.EXCEPTION_MAPPING,
                                        timestamp, mapper, throwable, throwable.getLocalizedMessage(),
                                        mappedResponse != null ? mappedResponse.getStatusInfo() : "-no-response-");
                            }


                            if (mappedResponse != null) {
                                // response successfully mapped
                                return mappedResponse;
                            } else {
                                return Response.noContent().build();
                            }
                        } catch (final Throwable mapperThrowable) {
                            // spec: If the exception mapping provider throws an exception while creating a Response
                            // then return a server error (status code 500) response to the client.
                            LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_THROWS_EXCEPTION(mapper.getClass()),
                                    mapperThrowable);
                            LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_FAILED_FOR_EXCEPTION(), throwable);
                            return Response.serverError().build();
                        }
                    }

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         {
            if (e instanceof WebApplicationException)
            {


               Response errorResponse = ((WebApplicationException)e).getResponse();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(WebApplicationException.class);


               int errorStatus = errorResponse.getStatus();
               // should be some of 4xx status
               if (errorStatus < 500)
               {
                  // Warn about error in debug mode only.
                  if (LOG.isDebugEnabled() && e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               else
               {
                  if (e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               // -----
               if (errorResponse.getEntity() == null)
               {
                  if (excmap != null)
                  {
                     errorResponse = excmap.toResponse(e);
                  }
                  else
                  {
                     if (e.getMessage() != null)
                     {
                        errorResponse = createErrorResponse(errorStatus, e.getMessage());
                     }
                  }
               }
               else
               {
                  if (errorResponse.getMetadata().getFirst(ExtHttpHeaders.JAXRS_BODY_PROVIDED) == null)
                  {
                     String jaxrsHeader = getJaxrsHeader(errorStatus);
                     if (jaxrsHeader != null)
                     {
                        errorResponse.getMetadata().putSingle(ExtHttpHeaders.JAXRS_BODY_PROVIDED, jaxrsHeader);
                     }
                  }
               }
               response.setResponse(errorResponse);
            }
            else if (e instanceof InternalException)
            {
               Throwable cause = e.getCause();
               Class causeClazz = cause.getClass();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
               while (causeClazz != null && excmap == null)
               {
                  excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
                  if (excmap == null)
                     causeClazz = causeClazz.getSuperclass();
               }
               if (excmap != null)
               {
                  if (LOG.isDebugEnabled())
                  {
                     // Hide error message if exception mapper exists.
                     LOG.warn("Internal error occurs.", cause);
                  }
                  response.setResponse(excmap.toResponse(e.getCause()));
               }
               else
               {
                  LOG.error("Internal error occurs.", cause);
                  throw new UnhandledException(e.getCause());

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         {
            if (e instanceof WebApplicationException)
            {


               Response errorResponse = ((WebApplicationException)e).getResponse();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(WebApplicationException.class);


               int errorStatus = errorResponse.getStatus();
               // should be some of 4xx status
               if (errorStatus < 500)
               {
                  // Warn about error in debug mode only.
                  if (LOG.isDebugEnabled() && e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               else
               {
                  if (e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
               }
               // -----
               if (errorResponse.getEntity() == null)
               {
                  if (excmap != null)
                  {
                     errorResponse = excmap.toResponse(e);
                  }
                  else
                  {
                     if (e.getMessage() != null)
                     {
                        errorResponse = createErrorResponse(errorStatus, e.getMessage());
                     }
                  }
               }
               else
               {
                  if (errorResponse.getMetadata().getFirst(ExtHttpHeaders.JAXRS_BODY_PROVIDED) == null)
                  {
                     String jaxrsHeader = getJaxrsHeader(errorStatus);
                     if (jaxrsHeader != null)
                     {
                        errorResponse.getMetadata().putSingle(ExtHttpHeaders.JAXRS_BODY_PROVIDED, jaxrsHeader);
                     }
                  }
               }
               response.setResponse(errorResponse);
            }
            else if (e instanceof InternalException)
            {
               Throwable cause = e.getCause();
               Class causeClazz = cause.getClass();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
               while (causeClazz != null && excmap == null)
               {
                  excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
                  if (excmap == null)
                     causeClazz = causeClazz.getSuperclass();
               }
               if (excmap != null)
               {
                  if (LOG.isDebugEnabled())
                  {
                     // Hide error message if exception mapper exists.
                     LOG.warn("Internal error occurs.", cause);
                  }
                  response.setResponse(excmap.toResponse(e.getCause()));
               }
               else
               {
                  LOG.error("Internal error occurs.", cause);
                  throw new UnhandledException(e.getCause());

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         {
            if (e instanceof WebApplicationException)
            {


               Response errorResponse = ((WebApplicationException)e).getResponse();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(WebApplicationException.class);


               // should be some of 4xx status
               if (errorResponse.getStatus() < 500)
               {
                  if (LOG.isDebugEnabled() && e.getCause() != null)
                  {
                     LOG.warn("WedApplication exception occurs.", e.getCause());
                  }
                  if (errorResponse.getEntity() == null)
                  {
                     if (excmap != null)
                     {
                        errorResponse = excmap.toResponse(e);
                     }
                  }
                  response.setResponse(errorResponse);
               }
               else
               {


                  if (errorResponse.getEntity() == null)
                  {
                     if (excmap != null)
                     {
                        if (LOG.isDebugEnabled() && e.getCause() != null)
                        {
                           // Hide error message if exception mapper exists.
                           LOG.warn("WedApplication exception occurs.", e.getCause());
                        }


                        errorResponse = excmap.toResponse(e);
                     }
                     else
                     {
                        if (e.getCause() != null)
                        {
                           LOG.warn("WedApplication exception occurs.", e.getCause());
                        }


                        // add stack trace as message body
                        errorResponse =
                           Response.status(errorResponse.getStatus()).entity(new ErrorStreaming(e)).type(
                              MediaType.TEXT_PLAIN).build();
                     }
                  }
                  response.setResponse(errorResponse);
               }
            }
            else if (e instanceof InternalException)
            {
               Throwable cause = e.getCause();
               Class causeClazz = cause.getClass();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
               while (causeClazz != null && excmap == null)
               {
                  excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
                  if (excmap == null)
                     causeClazz = causeClazz.getSuperclass();
               }
               if (excmap != null)
               {
                  if (LOG.isDebugEnabled())
                  {
                     // Hide error message if exception mapper exists.
                     LOG.warn("Internal error occurs.", cause);
                  }
                  response.setResponse(excmap.toResponse(e.getCause()));
               }
               else
               {
                  LOG.error("Internal error occurs.", cause);
                  throw new UnhandledException(e.getCause());

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