/**
 * Abiquo community edition
 * cloud management application for hybrid clouds
 * Copyright (C) 2008-2010 - Abiquo Holdings S.L.
 *
 * This application is free software; you can redistribute it and/or
 * modify it under the terms of the GNU LESSER GENERAL PUBLIC
 * LICENSE as published by the Free Software Foundation under
 * version 3 of the License
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * LESSER GENERAL PUBLIC LICENSE v.3 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package com.abiquo.api.exceptions.mapper;

import javax.persistence.PersistenceException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.ext.ExceptionMapper;
import javax.ws.rs.ext.Provider;

import org.apache.wink.common.internal.ResponseImpl.ResponseBuilderImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.abiquo.api.exceptions.APIError;
import com.abiquo.model.transport.error.ErrorDto;
import com.abiquo.model.transport.error.ErrorsDto;

/**
 * Handles unexpected {@link PersistenceException}.
 * 
 * @author Ignasi Barrera
 */
@Provider
public class PersistenceExceptionMapper implements ExceptionMapper<PersistenceException>
{
    private static final Logger LOGGER = LoggerFactory.getLogger(PersistenceExceptionMapper.class);

    @Override
    public Response toResponse(final PersistenceException exception)
    {
        ErrorsDto errors = new ErrorsDto();
        ErrorDto error = new ErrorDto();
        ResponseBuilder builder = new ResponseBuilderImpl();

        error.setCode(APIError.STATUS_INTERNAL_SERVER_ERROR.getCode());
        error.setMessage(APIError.STATUS_INTERNAL_SERVER_ERROR.getMessage());
        builder.status(Status.INTERNAL_SERVER_ERROR);

        errors.getCollection().add(error);
        builder.entity(errors).type(ErrorsDto.MEDIA_TYPE);

        LOGGER.error("Unexpected persistence exception", exception);

        return builder.build();
    }

}