messagedecoderresult.java

mina是以Java实现的一个开源的网络程序框架

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 *  Licensed to the Apache Software Foundation (ASF) under one
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 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF 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.apache.mina.filter.codec.demux;

import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;

/**
 * Represents results from {@link MessageDecoder}.
 *
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (Thu, 26 Jun 2008) $
 *
 * @see MessageDecoder
 */
public class MessageDecoderResult {
    /**
     * Represents a result from {@link MessageDecoder#decodable(IoSession, IoBuffer)}
     * and {@link MessageDecoder#decode(IoSession, IoBuffer, ProtocolDecoderOutput)}.
     * Please refer to each method's documentation for detailed explanation.
     */
    public static MessageDecoderResult OK = new MessageDecoderResult("OK");

    /**
     * Represents a result from {@link MessageDecoder#decodable(IoSession, IoBuffer)}
     * and {@link MessageDecoder#decode(IoSession, IoBuffer, ProtocolDecoderOutput)}.
     * Please refer to each method's documentation for detailed explanation.
     */
    public static MessageDecoderResult NEED_DATA = new MessageDecoderResult(
            "NEED_DATA");

    /**
     * Represents a result from {@link MessageDecoder#decodable(IoSession, IoBuffer)}
     * and {@link MessageDecoder#decode(IoSession, IoBuffer, ProtocolDecoderOutput)}.
     * Please refer to each method's documentation for detailed explanation.
     */
    public static MessageDecoderResult NOT_OK = new MessageDecoderResult(
            "NOT_OK");

    private final String name;

    private MessageDecoderResult(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return name;
    }
}