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    
020    package org.activemq.io.impl;
021    import java.io.DataOutput;
022    import java.io.IOException;
023    import org.activemq.message.Packet;
024    import org.activemq.message.ResponseReceipt;
025    
026    /**
027     * Writes a ConsumerInfo object to a Stream
028     */
029    public class ResponseReceiptWriter extends ReceiptWriter {
030    
031    
032        /**
033         * Return the type of Packet
034         *
035         * @return integer representation of the type of Packet
036         */
037    
038        public int getPacketType() {
039            return Packet.RESPONSE_RECEIPT_INFO;
040        }
041    
042    
043        /**
044         * Write a Packet instance to data output stream
045         *
046         * @param packet  the instance to be seralized
047         * @param dataOut the output stream
048         * @throws IOException thrown if an error occurs
049         */
050    
051        public void writePacket(Packet packet, DataOutput dataOut) throws IOException {
052            super.writePacket(packet, dataOut);
053            ResponseReceipt info = (ResponseReceipt) packet;
054            byte data[] = info.getResultBytes();
055            if (data == null) {
056                dataOut.writeInt(0);
057            }
058            else {
059                dataOut.writeInt(data.length);
060                dataOut.write(data);
061            }
062        }
063    
064    
065    }