VoidMessageBodyReader.java

/*
 * Copyright (C) 2015 Strand Life Sciences.
 *
 * 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 com.strandls.alchemy.rest.client.reader;

import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;

/**
 * Message body reader for void types. Required to overcome bug
 * https://java.net/jira/browse/JERSEY-1994.
 *
 * @author Ashish Shinde
 *
 */
@Provider
@Produces(MediaType.APPLICATION_OCTET_STREAM)
@Consumes(MediaType.APPLICATION_OCTET_STREAM)
public class VoidMessageBodyReader implements MessageBodyReader<Object> {

    /*
     * (non-Javadoc)
     * @see javax.ws.rs.ext.MessageBodyReader#isReadable(java.lang.Class,
     * java.lang.reflect.Type, java.lang.annotation.Annotation[],
     * javax.ws.rs.core.MediaType)
     */
    @Override
    public boolean isReadable(final Class<?> type, final Type genericType,
            final Annotation[] annotations, final MediaType mediaType) {
        return Void.TYPE.equals(genericType)
                && MediaType.APPLICATION_OCTET_STREAM_TYPE.equals(mediaType);
    }

    /*
     * (non-Javadoc)
     * @see javax.ws.rs.ext.MessageBodyReader#readFrom(java.lang.Class,
     * java.lang.reflect.Type, java.lang.annotation.Annotation[],
     * javax.ws.rs.core.MediaType, javax.ws.rs.core.MultivaluedMap,
     * java.io.InputStream)
     */
    @Override
    public Void readFrom(final Class<Object> type, final Type genericType,
            final Annotation[] annotations, final MediaType mediaType,
            final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream)
                    throws IOException, WebApplicationException {
        return null;
    }

}