Smack/source/org/jivesoftware/smack/provider/PacketExtensionProvider.java

/**
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 *
 * Copyright (C) 2002-2003 Jive Software. All rights reserved.
 * ====================================================================
 * The Jive Software License (based on Apache Software License, Version 1.1)
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
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 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by
 *        Jive Software (http://www.jivesoftware.com)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Smack" and "Jive Software" must not be used to
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 * 5. Products derived from this software may not be called "Smack",
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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package org.jivesoftware.smack.provider;

import org.jivesoftware.smack.packet.PacketExtension;
import org.xmlpull.v1.XmlPullParser;

/**
 * An interface for parsing custom packets extensions. Each PacketExtensionProvider must
 * be registered with the ProviderManager class for it to be used. Every implementation
 * of this interface <b>must</b> have a public, no-argument constructor.
 *
 * @author Matt Tucker
 */
public interface PacketExtensionProvider {

    /**
     * Parse an extension sub-packet and create a PacketExtension instance. At
     * the beginning of the method call, the xml parser will be positioned on the
     * opening element of the packet extension. At the end of the method call, the
     * parser <b>must</b> be positioned on the closing element of the packet extension.
     *
     * @param parser an XML parser.
     * @return a new IQ instance.
     * @throws java.lang.Exception if an error occurs parsing the XML.
     */
    public PacketExtension parseExtension(XmlPullParser parser) throws Exception;
}