001/** 002 * 003 * Copyright 2003-2007 Jive Software. 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 018package org.jivesoftware.smack.filter; 019 020import org.jivesoftware.smack.packet.Message; 021import org.jivesoftware.smack.util.StringUtils; 022 023/** 024 * Filters for message packets with a particular thread value. 025 * 026 * @author Matt Tucker 027 */ 028public class ThreadFilter extends FlexibleStanzaTypeFilter<Message> implements StanzaFilter { 029 030 private final String thread; 031 032 /** 033 * Creates a new thread filter using the specified thread value. 034 * 035 * @param thread the thread value to filter for. 036 */ 037 public ThreadFilter(String thread) { 038 StringUtils.requireNotNullNorEmpty(thread, "Thread must not be null nor empty."); 039 this.thread = thread; 040 } 041 042 @Override 043 protected boolean acceptSpecific(Message message) { 044 return thread.equals(message.getThread()); 045 } 046 047 @Override 048 public String toString() { 049 return getClass().getSimpleName() + ": thread=" + thread; 050 } 051}