/*
 * JBoss, Home of Professional Open Source
 *
 * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * by the @author tags. See the COPYRIGHT.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This 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; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * 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 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.netty.channel;

import java.net.SocketAddress;

/**
 * A skeletal server-side {@link Channel} implementation.  A server-side
 * {@link Channel} does not allow the following operations:
 * <ul>
 * <li>{@link #connect(SocketAddress)}</li>
 * <li>{@link #disconnect()}</li>
 * <li>{@link #getInterestOps()}</li>
 * <li>{@link #setInterestOps(int)}</li>
 * <li>{@link #write(Object)}</li>
 * <li>{@link #write(Object, SocketAddress)}</li>
 * <li>and the shortcut methods which calls the methods mentioned above
 * </ul>
 *
 * @author The Netty Project (netty-dev@lists.jboss.org)
 * @author Trustin Lee (tlee@redhat.com)
 *
 * @version $Rev$, $Date$
 *
 */
public abstract class AbstractServerChannel extends AbstractChannel implements ServerChannel {

    /**
     * Creates a new instance.
     *
     * @param factory
     *        the factory which created this channel
     * @param pipeline
     *        the pipeline which is going to be attached to this channel
     * @param sink
     *        the sink which will receive downstream events from the pipeline
     *        and send upstream events to the pipeline
     */
    protected AbstractServerChannel(
            ChannelFactory factory,
            ChannelPipeline pipeline,
            ChannelSink sink) {
        super(null, factory, pipeline, sink);
    }

    @Override
    public ChannelFuture connect(SocketAddress remoteAddress) {
        return getUnsupportedOperationFuture();
    }

    @Override
    public ChannelFuture disconnect() {
        return getUnsupportedOperationFuture();
    }

    @Override
    public int getInterestOps() {
        return OP_NONE;
    }

    @Override
    public ChannelFuture setInterestOps(int interestOps) {
        return getUnsupportedOperationFuture();
    }

    @Override
    protected void setInterestOpsNow(int interestOps) {
        // Ignore.
    }

    @Override
    public ChannelFuture write(Object message) {
        return getUnsupportedOperationFuture();
    }

    @Override
    public ChannelFuture write(Object message, SocketAddress remoteAddress) {
        return getUnsupportedOperationFuture();
    }

    public boolean isConnected() {
        return false;
    }
}