001/**
002 *
003 * Copyright 2017 Florian Schmaus
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 message stanzas which have at least one body.
025 */
026public final class MessageWithThreadFilter extends FlexibleStanzaTypeFilter<Message> {
027
028    public static final StanzaFilter INSTANCE = new MessageWithThreadFilter();
029
030    private MessageWithThreadFilter() {
031        super(Message.class);
032    }
033
034    @Override
035    protected boolean acceptSpecific(Message message) {
036        return StringUtils.isNotEmpty(message.getThread());
037    }
038
039    @Override
040    public String toString() {
041        return getClass().getSimpleName();
042    }
043}