001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 *
019 */
020package org.apache.mina.example.sumup.codec;
021
022import org.apache.mina.core.buffer.IoBuffer;
023import org.apache.mina.core.session.IoSession;
024import org.apache.mina.example.sumup.message.ResultMessage;
025import org.apache.mina.filter.codec.demux.MessageEncoder;
026
027/**
028 * A {@link MessageEncoder} that encodes {@link ResultMessage}.
029 *
030 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
031 */
032public class ResultMessageEncoder<T extends ResultMessage> extends AbstractMessageEncoder<T> {
033    public ResultMessageEncoder() {
034        super(Constants.RESULT);
035    }
036
037    @Override
038    protected void encodeBody(IoSession session, T message, IoBuffer out) {
039        if (message.isOk()) {
040            out.putShort((short) Constants.RESULT_OK);
041            out.putInt(message.getValue());
042        } else {
043            out.putShort((short) Constants.RESULT_ERROR);
044        }
045    }
046
047    public void dispose() throws Exception {
048    }
049}