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}