1 /** 2 * $RCSfile$ 3 * $Revision$ 4 * $Date$ 5 * 6 * Copyright 2003 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 where the "from" field contains a specified value. 27 * 28 * @author Matt Tucker 29 */ 30 public class FromContainsFilter implements PacketFilter { 31 32 private String from; 33 34 /** 35 * Creates a "from" contains filter using the "from" field part. 36 * 37 * @param from the from field value the packet must contain. 38 */ 39 public FromContainsFilter(String from) { 40 if (from == null) { 41 throw new IllegalArgumentException("Parameter cannot be null."); 42 } 43 this.from = from.toLowerCase(); 44 } 45 46 public boolean accept(Packet packet) { 47 if (packet.getFrom() == null) { 48 return false; 49 } 50 else { 51 return packet.getFrom().toLowerCase().indexOf(from) != -1; 52 } 53 } 54 }