public boolean executeExceptionMapperForClass(
HttpRequest request, HttpResponse response, Throwable exception, Class clazz) {
ExceptionMapper mapper = providerFactory.getExceptionMapper(clazz);
if (mapper == null) return false;
writeFailure(request, response, mapper.toResponse(exception));
return true;
}
/**
* Execute an ExceptionMapper if one exists for the given exception. Recurse to base class if not
* found
*
* @param response
* @param exception
* @return true if an ExceptionMapper was found and executed
*/
public boolean executeExceptionMapper(
HttpRequest request, HttpResponse response, Throwable exception) {
ExceptionMapper mapper = null;
Class causeClass = exception.getClass();
while (mapper == null) {
if (causeClass == null) break;
mapper = providerFactory.getExceptionMapper(causeClass);
if (mapper == null) causeClass = causeClass.getSuperclass();
}
if (mapper != null) {
Response jaxrsResponse = mapper.toResponse(exception);
if (jaxrsResponse == null) {
jaxrsResponse = Response.status(204).build();
}
writeFailure(request, response, jaxrsResponse);
return true;
}
return false;
}
/**
* Map an exception to a response.
*
* @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) {
wa.getResponseListener().onError(Thread.currentThread().getId(), e);
return false;
}
wa.getResponseListener().onMappedException(Thread.currentThread().getId(), e, em);
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
// rethrow it to the HTTP container
throw ex;
} catch (RuntimeException ex) {
LOGGER.severe(
"Exception mapper "
+ em
+ " for Throwable "
+ e
+ " threw a RuntimeException when "
+ "attempting to obtain the response");
Response r = Response.serverError().build();
onException(ex, r, false);
}
return true;
}