1 /** 2 * $RCSfile$ 3 * $Revision$ 4 * $Date$ 5 * 6 * Copyright 2003-2007 Jive Software. 7 * 8 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package org.jivesoftware.smack.filter; 22 23 import org.jivesoftware.smack.packet.Packet; 24 25 /** 26 * Filters for packets of a particular type. The type is given as a Class object, so 27 * example types would: 28 * <ul> 29 * <li><tt>Message.class</tt> 30 * <li><tt>IQ.class</tt> 31 * <li><tt>Presence.class</tt> 32 * </ul> 33 * 34 * @author Matt Tucker 35 */ 36 public class PacketTypeFilter implements PacketFilter { 37 38 Class<? extends Packet> packetType; 39 40 /** 41 * Creates a new packet type filter that will filter for packets that are the 42 * same type as <tt>packetType</tt>. 43 * 44 * @param packetType the Class type. 45 */ 46 public PacketTypeFilter(Class<? extends Packet> packetType) { 47 // Ensure the packet type is a sub-class of Packet. 48 if (!Packet.class.isAssignableFrom(packetType)) { 49 throw new IllegalArgumentException("Packet type must be a sub-class of Packet."); 50 } 51 this.packetType = packetType; 52 } 53 54 public boolean accept(Packet packet) { 55 return packetType.isInstance(packet); 56 } 57 58 public String toString() { 59 return "PacketTypeFilter: " + packetType.getName(); 60 } 61 } 62
