/** * $RCSfile$ * $Revision$ * $Date$ * * Copyright (C) 2004 Jive Software. All rights reserved. * * This software is published under the terms of the GNU Public License (GPL), * a copy of which is included in this distribution. */ package org.jivesoftware.messenger.disco; import org.jivesoftware.messenger.forms.spi.XDataFormImpl; import org.jivesoftware.messenger.auth.UnauthorizedException; import org.xmpp.packet.JID; import java.util.Iterator; /** * A DiscoInfoProvider is responsible for providing information about a JID's name and its node. For * example, the room service could implement this interface in order to provide disco#info about * its rooms. In this case, the JID's name will be the room's name and node will be null.<p> * <p/> * The information to provide has to include the entity's identity and the features offered and * protocols supported by the target entity. The identity will be provided as an Element that will * include the categoty, type and name attributes. Whilst the features will be just plain Strings. * * @author Gaston Dombiak */ public interface DiscoInfoProvider { /** * Returns an Iterator (of Element) with the target entity's identities. Each Element must * include the categoty, type and name attributes of the entity. * * @param name the recipient JID's name. * @param node the requested disco node. * @param senderJID the XMPPAddress of user that sent the disco info request. * @return an Iterator (of Element) with the target entity's identities. */ public abstract Iterator getIdentities(String name, String node, JID senderJID); /** * Returns an Iterator (of String) with the supported features. The features to include are the * features offered and supported protocols by the target entity identified by the requested * name and node. * * @param name the recipient JID's name. * @param node the requested disco node. * @param senderJID the XMPPAddress of user that sent the disco info request. * @return an Iterator (of String) with the supported features. */ public abstract Iterator getFeatures(String name, String node, JID senderJID); /** * Returns an XDataForm with the extended information about the entity or null if none. Each bit * of information about the entity must be included as a value of a field of the form. * * @param name the recipient JID's name. * @param node the requested disco node. * @param senderJID the XMPPAddress of user that sent the disco info request. * @return an XDataForm with the extended information about the entity or null if none. */ public abstract XDataFormImpl getExtendedInfo(String name, String node, JID senderJID); /** * Returns true if we can provide information related to the requested name and node. For * example, if the requested name refers to a non-existant MUC room then the answer will be * false. In case that the sender of the disco request is not authorized to discover this * information 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 info request. * @return true if we can provide information related to the requested name and node. * @throws UnauthorizedException if the senderJID is not authorized to discover information. */ public abstract boolean hasInfo(String name, String node, JID senderJID) throws UnauthorizedException; }