001/**
002 *
003 * Copyright © 2016 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 */
017package org.jivesoftware.smack.filter;
018
019import org.jivesoftware.smack.packet.Stanza;
020
021import org.jxmpp.jid.Jid;
022
023public final class EmptyToMatcher implements StanzaFilter {
024
025    public static final EmptyToMatcher INSTANCE = new EmptyToMatcher();
026
027    private EmptyToMatcher() {
028    }
029
030    @Override
031    public boolean accept(Stanza packet) {
032        Jid packetTo = packet.getTo();
033        return packetTo == null;
034    }
035
036    @Override
037    public String toString() {
038        return getClass().getSimpleName();
039    }
040}