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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you 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.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:
 * 
 * {@link #connect(SocketAddress)}
 * {@link #disconnect()}
 * {@link #getInterestOps()}
 * {@link #setInterestOps(int)}
 * {@link #write(Object)}
 * {@link #write(Object, SocketAddress)}
 * and the shortcut methods which calls the methods mentioned above
 * 
 */
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 setInternalInterestOps(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;
    }
}