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      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 with a particular packet ID.
     27  *
     28  * @author Matt Tucker
     29  */
     30 public class PacketIDFilter implements PacketFilter {
     31 
     32     private String packetID;
     33 
     34     /**
     35      * Creates a new packet ID filter using the specified packet ID.
     36      *
     37      * @param packetID the packet ID to filter for.
     38      */
     39     public PacketIDFilter(String packetID) {
     40         if (packetID == null) {
     41             throw new IllegalArgumentException("Packet ID cannot be null.");
     42         }
     43         this.packetID = packetID;
     44     }
     45 
     46     public boolean accept(Packet packet) {
     47         return packetID.equals(packet.getPacketID());
     48     }
     49 
     50     public String toString() {
     51         return "PacketIDFilter by id: " + packetID;
     52     }
     53 }
     54