ChannelRepresentation.java

/**
 * Copyright 2005-2014 Restlet
 * 
 * The contents of this file are subject to the terms of one of the following
 * open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
 * select the license that you prefer but you may not use this file except in
 * compliance with one of these Licenses.
 * 
 * You can obtain a copy of the Apache 2.0 license at
 * http://www.opensource.org/licenses/apache-2.0
 * 
 * You can obtain a copy of the EPL 1.0 license at
 * http://www.opensource.org/licenses/eclipse-1.0
 * 
 * See the Licenses for the specific language governing permissions and
 * limitations under the Licenses.
 * 
 * Alternatively, you can obtain a royalty free commercial license with less
 * limitations, transferable or non-transferable, directly at
 * http://restlet.com/products/restlet-framework
 * 
 * Restlet is a registered trademark of Restlet S.A.S.
 */

package org.restlet.representation;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.nio.channels.WritableByteChannel;

import org.restlet.data.MediaType;
import org.restlet.engine.io.IoUtils;

/**
 * Representation based on a NIO byte channel.
 * 
 * @author Jerome Louvel
 */
public abstract class ChannelRepresentation extends Representation {
    /**
     * Constructor.
     * 
     * @param mediaType
     *            The media type.
     */
    public ChannelRepresentation(MediaType mediaType) {
        super(mediaType);
    }

    @Override
    public Reader getReader() throws IOException {
        return IoUtils.getReader(getStream(), getCharacterSet());
    }

    @Override
    public InputStream getStream() throws IOException {
        return IoUtils.getStream(getChannel());
    }

    @Override
    public void write(OutputStream outputStream) throws IOException {
        WritableByteChannel wbc = IoUtils.getChannel(outputStream);
        write(wbc);
    }

    @Override
    public void write(Writer writer) throws IOException {
        OutputStream os = IoUtils.getStream(writer, getCharacterSet());
        write(os);
        os.flush();
    }

}