001/**
002 *
003 * Copyright © 2014 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.packet;
018
019public class EmptyResultIQ extends IQ {
020
021    public EmptyResultIQ() {
022        super(null, null);
023        setType(IQ.Type.result);
024    }
025
026    public EmptyResultIQ(IQ request) {
027        this();
028        if (!(request.getType() == Type.get || request.getType() == Type.set)) {
029            throw new IllegalArgumentException(
030                    "IQ must be of type 'set' or 'get'. Original IQ: " + request.toXML());
031        }
032        setStanzaId(request.getStanzaId());
033        setFrom(request.getTo());
034        setTo(request.getFrom());
035    }
036
037    @Override
038    protected IQChildElementXmlStringBuilder getIQChildElementBuilder(IQChildElementXmlStringBuilder xml) {
039        // Empty result IQs don't have an child elements
040        return null;
041    }
042}