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      1 /**
      2  * $RCSfile$
      3  * $Revision$
      4  * $Date$
      5  *
      6  * Copyright 2003-2007 Jive Software.
      7  *
      8  * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
      9  * you may not use this file except in compliance with the License.
     10  * You may obtain a copy of the License at
     11  *
     12  *     http://www.apache.org/licenses/LICENSE-2.0
     13  *
     14  * Unless required by applicable law or agreed to in writing, software
     15  * distributed under the License is distributed on an "AS IS" BASIS,
     16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     17  * See the License for the specific language governing permissions and
     18  * limitations under the License.
     19  */
     20 
     21 package org.jivesoftware.smack.provider;
     22 
     23 import org.jivesoftware.smack.packet.IQ;
     24 import org.xmlpull.v1.XmlPullParser;
     25 
     26 /**
     27  * An interface for parsing custom IQ packets. Each IQProvider must be registered with
     28  * the ProviderManager class for it to be used. Every implementation of this
     29  * interface <b>must</b> have a public, no-argument constructor.
     30  *
     31  * @author Matt Tucker
     32  */
     33 public interface IQProvider {
     34 
     35     /**
     36      * Parse the IQ sub-document and create an IQ instance. Each IQ must have a
     37      * single child element. At the beginning of the method call, the xml parser
     38      * will be positioned at the opening tag of the IQ child element. At the end
     39      * of the method call, the parser <b>must</b> be positioned on the closing tag
     40      * of the child element.
     41      *
     42      * @param parser an XML parser.
     43      * @return a new IQ instance.
     44      * @throws Exception if an error occurs parsing the XML.
     45      */
     46     public IQ parseIQ(XmlPullParser parser) throws Exception;
     47 }