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package org.glassfish.jersey.gf.ejb.internal;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ejb.EJBException;
import javax.inject.Inject;
import javax.inject.Provider;
import org.glassfish.jersey.spi.ExceptionMappers;
import org.glassfish.jersey.spi.ExtendedExceptionMapper;
/**
* Helper class to handle exceptions wrapped by the EJB container with EJBException.
* If this mapper was not registered, no {@link WebApplicationException}
* would end up mapped to the corresponding response.
*
* @author Paul Sandoz (paul.sandoz at oracle.com)
* @author Jakub Podlesak (jakub.podlesak at oracle.com)
*/
public class EjbExceptionMapper implements ExtendedExceptionMapper<EJBException> {
private final Provider<ExceptionMappers> mappers;
/**
* Create new EJB exception mapper.
*
* @param mappers utility to find mapper delegate.
*/
@Inject
public EjbExceptionMapper(Provider<ExceptionMappers> mappers) {
this.mappers = mappers;
}
@Override
public Response toResponse(EJBException exception) {
return causeToResponse(exception);
}
@Override
public boolean isMappable(EJBException exception) {
try {
return (causeToResponse(exception) != null);
} catch (Throwable ignored) {
return false;
}
}
private Response causeToResponse(EJBException exception) {
final Exception cause = exception.getCausedByException();
if (cause != null) {
final ExceptionMapper mapper = mappers.get().findMapping(cause);
if (mapper != null && mapper != this) {
return mapper.toResponse(cause);
} else if (cause instanceof WebApplicationException) {
return ((WebApplicationException)cause).getResponse();
}
}
return null;
}
}