DiscoItemsProvider.java 2.17 KB
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/**
 * $RCSfile$
 * $Revision: 1695 $
 * $Date: 2005-07-26 02:09:55 -0300 (Tue, 26 Jul 2005) $
 *
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 * Copyright (C) 2004-2008 Jive Software. All rights reserved.
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 *
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 * 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.
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 */

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package org.jivesoftware.openfire.disco;
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import org.xmpp.packet.JID;

import java.util.Iterator;

/**
 * A DiscoItemsProvider is responsible for providing the items associated with a JID's name and
 * node. For example, the room service could implement this interface in order to provide
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 * the existing rooms as its items. In this case, the JID's name and node won't be used.
 * <p>
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 * The items to provide must have a JID attribute specifying the JID of the item and may possess a
 * name attribute specifying a natural-language name for the item. The node attribute is optional
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 * and must be used only for items that aren't addressable as a JID.</p>
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 *
 * @author Gaston Dombiak
 */
public interface DiscoItemsProvider {

    /**
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     * Returns an Iterator (of DiscoItem) with the target entity's items or null if none. Each DiscoItem
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     * must include a JID attribute and may include the name and node attributes of the entity. In
     * case that the sender of the disco request is not authorized to discover items an
     * UnauthorizedException will be thrown.
     *
     * @param name the recipient JID's name.
     * @param node the requested disco node.
     * @param senderJID the XMPPAddress of user that sent the disco items request.
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     * @return an Iterator (of DiscoItem) with the target entity's items or null if none.
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     */
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    public abstract Iterator<DiscoItem> getItems(String name, String node, JID senderJID);
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}