utils/rest/src/main/java/org/onlab/rest/exceptions/WebApplicationExceptionMapper.java

/*
 * Copyright 2015-present Open Networking Laboratory
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.onlab.rest.exceptions;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.Provider;

/**
 * Exception mapper for WebApplicationExceptions.
 */
@Provider
public class WebApplicationExceptionMapper extends AbstractMapper<WebApplicationException> {

    /**
     * Extracts and returns the response from a WebApplicationException.
     *
     * @param e WebApplicationException that was thrown
     * @return precomputed Response from the exception
     */
    @Override
    public Response toResponse(WebApplicationException e) {
        return e.getResponse();
    }

    @Override
    public Response.Status responseStatus() {
        // This should never be called because this class overrides toResponse()
        throw new UnsupportedOperationException(
                "responseStatus() for a WebApplicationException should never be called");
    }
}