1 /*** 2 * 3 * Copyright 2004 Protique Ltd 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 19 20 package org.codehaus.activemq.message; 21 22 import java.io.DataOutput; 23 import java.io.IOException; 24 25 /*** 26 * Allows instances implementing Packet to written to a DataOutput 27 */ 28 29 public interface PacketWriter { 30 31 /*** 32 * Return the type of Packet 33 * 34 * @return integer representation of the type of Packet 35 */ 36 37 public int getPacketType(); 38 39 /*** 40 * @param packet 41 * @return true if this PacketWriter can write this type of Packet 42 */ 43 public boolean canWrite(Packet packet); 44 45 /*** 46 * Write a Packet instance to data output stream 47 * 48 * @param packet the instance to be seralized 49 * @param dataOut the output stream 50 * @throws IOException thrown if an error occurs 51 */ 52 53 public void writePacket(Packet packet, DataOutput dataOut) throws IOException; 54 55 /*** 56 * Serializes a Packet int a byte array 57 * 58 * @param packet 59 * @return the byte[] 60 * @throws IOException 61 */ 62 63 public byte[] writePacketToByteArray(Packet packet) throws IOException; 64 65 66 }