001    /**
002     *
003     * Copyright 2004 Protique Ltd
004     *
005     * Licensed under the Apache License, Version 2.0 (the "License");
006     * you may not use this file except in compliance with the License.
007     * You may obtain a copy of the License at
008     *
009     * http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     *
017     **/
018    
019    package org.activemq.io.impl;
020    import java.io.DataOutput;
021    import java.io.IOException;
022    import org.activemq.message.Packet;
023    import org.activemq.message.WireFormatInfo;
024    
025    /**
026     * Writes a ConsumerInfo object to a Stream
027     */
028    public class WireFormatInfoWriter extends AbstractPacketWriter {
029        
030        
031        /**
032         * Return the type of Packet
033         * 
034         * @return integer representation of the type of Packet
035         */
036        public int getPacketType() {
037            return Packet.WIRE_FORMAT_INFO;
038        }
039    
040        /**
041         * Write a Packet instance to data output stream
042         * 
043         * @param packet the instance to be seralized
044         * @param dataOut the output stream
045         * @throws IOException thrown if an error occurs
046         */
047        public void writePacket(Packet packet, DataOutput dataOut) throws IOException {
048            dataOut.write(WireFormatInfo.MAGIC);
049            super.writePacket(packet, dataOut);
050            WireFormatInfo info = (WireFormatInfo) packet;
051            dataOut.writeInt(info.getVersion());
052        }
053    }