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Smack/source/org/jivesoftware/smackx/pubsub/EmbeddedPacketExtension.java
2009-10-28 22:38:40 +00:00

45 lines
1.9 KiB
Java

/**
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smackx.pubsub;
import java.util.List;
import org.jivesoftware.smack.packet.Packet;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.util.PacketParserUtils;
/**
* This interface defines {@link PacketExtension} implementations that contain other
* extensions. This effectively extends the idea of an extension within one of the
* top level {@link Packet} types to consider any embedded element to be an extension
* of its parent. This more easily enables the usage of some of Smacks parsing
* utilities such as {@link PacketParserUtils#parsePacketExtension(String, String, org.xmlpull.v1.XmlPullParser)} to be used
* to parse any element of the XML being parsed.
*
* <p>Top level extensions have only one element, but they can have multiple children, or
* their children can have multiple children. This interface is a way of allowing extensions
* to be embedded within one another as a partial or complete one to one mapping of extension
* to element.
*
* @author Robin Collier
*/
public interface EmbeddedPacketExtension extends PacketExtension
{
/**
* Get the list of embedded {@link PacketExtension} objects.
*
* @return List of embedded {@link PacketExtension}
*/
List<PacketExtension> getExtensions();
}