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208 lines
7.7 KiB
Java
208 lines
7.7 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright (C) 2002-2003 Jive Software. All rights reserved.
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* ====================================================================
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* The Jive Software License (based on Apache Software License, Version 1.1)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by
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* Jive Software (http://www.jivesoftware.com)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Smack" and "Jive Software" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please
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* contact webmaster@jivesoftware.com.
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*
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* 5. Products derived from this software may not be called "Smack",
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* nor may "Smack" appear in their name, without prior written
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* permission of Jive Software.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL JIVE SOFTWARE OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*/
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package org.jivesoftware.smackx.packet;
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import java.util.*;
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import org.jivesoftware.smack.*;
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import org.jivesoftware.smack.packet.PacketExtension;
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import org.jivesoftware.smackx.*;
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/**
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* Represents XMPP Roster Item Exchange packets.<p>
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*
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* The 'jabber:x:roster' namespace (which is not to be confused with the 'jabber:iq:roster'
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* namespace) is used to send roster items from one client to another. A roster item is sent by
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* adding to the <message/> element an <x/> child scoped by the 'jabber:x:roster' namespace. This
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* <x/> element may contain one or more <item/> children (one for each roster item to be sent).<p>
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*
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* Each <item/> element may possess the following attributes:<p>
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*
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* <jid/> -- The id of the contact being sent. This attribute is required.<br>
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* <name/> -- A natural-language nickname for the contact. This attribute is optional.<p>
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*
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* Each <item/> element may also contain one or more <group/> children specifying the
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* natural-language name of a user-specified group, for the purpose of categorizing this contact
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* into one or more roster groups.
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*
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* @author Gaston Dombiak
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*/
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public class RosterExchange implements PacketExtension {
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private List remoteRosterEntries = new ArrayList();
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/**
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* Creates a new empty roster exchange package.
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*
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*/
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public RosterExchange() {
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super();
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}
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/**
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* Creates a new roster exchange package with the entries specified in roster.
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*
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* @param roster the roster to send to other XMPP entity.
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*/
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public RosterExchange(Roster roster) {
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// Add all the roster entries to the new RosterExchange
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for (Iterator rosterEntries = roster.getEntries(); rosterEntries.hasNext();) {
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this.addRosterEntry((RosterEntry) rosterEntries.next());
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}
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}
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/**
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* Adds a roster entry to the packet.
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*
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* @param rosterEntry a roster entry to add.
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*/
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public void addRosterEntry(RosterEntry rosterEntry) {
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// Obtain a String[] from the roster entry groups name
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ArrayList groupNamesList = new ArrayList();
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String[] groupNames;
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for (Iterator groups = rosterEntry.getGroups(); groups.hasNext();) {
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groupNamesList.add(((RosterGroup) groups.next()).getName());
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}
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groupNames = (String[]) groupNamesList.toArray(new String[groupNamesList.size()]);
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// Create a new Entry based on the rosterEntry and add it to the packet
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RemoteRosterEntry remoteRosterEntry = new RemoteRosterEntry(rosterEntry.getUser(), rosterEntry.getName(), groupNames);
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addRosterEntry(remoteRosterEntry);
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}
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/**
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* Adds a remote roster entry to the packet.
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*
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* @param remoteRosterEntry a remote roster entry to add.
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*/
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public void addRosterEntry(RemoteRosterEntry remoteRosterEntry) {
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synchronized (remoteRosterEntries) {
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remoteRosterEntries.add(remoteRosterEntry);
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}
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}
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/**
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* Returns the XML element name of the extension sub-packet root element.
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* Always returns "x"
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*
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* @return the XML element name of the packet extension.
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*/
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public String getElementName() {
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return "x";
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}
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/**
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* Returns the XML namespace of the extension sub-packet root element.
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* According the specification the namespace is always "jabber:x:roster"
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* (which is not to be confused with the 'jabber:iq:roster' namespace
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*
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* @return the XML namespace of the packet extension.
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*/
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public String getNamespace() {
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return "jabber:x:roster";
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}
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/**
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* Returns an Iterator for the roster entries in the packet.
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*
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* @return an Iterator for the roster entries in the packet.
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*/
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public Iterator getRosterEntries() {
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synchronized (remoteRosterEntries) {
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List entries = Collections.unmodifiableList(new ArrayList(remoteRosterEntries));
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return entries.iterator();
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}
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}
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/**
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* Returns a count of the entries in the roster exchange.
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*
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* @return the number of entries in the roster exchange.
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*/
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public int getEntryCount() {
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return remoteRosterEntries.size();
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}
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/**
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* Returns the XML representation of a Roster Item Exchange according the specification.
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*
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* Usually the XML representation will be inside of a Message XML representation like
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* in the following example:
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* <pre>
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* <message id="MlIpV-4" to="gato1@gato.home" from="gato3@gato.home/Smack">
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* <subject>Any subject you want</subject>
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* <body>This message contains roster items.</body>
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* <x xmlns="jabber:x:roster">
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* <item jid="gato1@gato.home"/>
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* <item jid="gato2@gato.home"/>
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* </x>
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* </message>
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* </pre>
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*
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*/
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public String toXML() {
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StringBuffer buf = new StringBuffer();
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buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()).append(
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"\">");
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// Loop through all roster entries and append them to the string buffer
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for (Iterator i = getRosterEntries(); i.hasNext();) {
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RemoteRosterEntry remoteRosterEntry = (RemoteRosterEntry) i.next();
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buf.append(remoteRosterEntry.toXML());
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}
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buf.append("</").append(getElementName()).append(">");
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return buf.toString();
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}
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}
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