diff options
Diffstat (limited to 'src/org/jivesoftware/smackx/packet/RosterExchange.java')
| -rw-r--r-- | src/org/jivesoftware/smackx/packet/RosterExchange.java | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smackx/packet/RosterExchange.java b/src/org/jivesoftware/smackx/packet/RosterExchange.java new file mode 100644 index 0000000..ad59146 --- /dev/null +++ b/src/org/jivesoftware/smackx/packet/RosterExchange.java @@ -0,0 +1,181 @@ +/** + * $RCSfile$ + * $Revision$ + * $Date$ + * + * Copyright 2003-2007 Jive Software. + * + * 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.packet; + +import org.jivesoftware.smack.Roster; +import org.jivesoftware.smack.RosterEntry; +import org.jivesoftware.smack.RosterGroup; +import org.jivesoftware.smack.packet.PacketExtension; +import org.jivesoftware.smackx.RemoteRosterEntry; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Iterator; +import java.util.List; + +/** + * Represents XMPP Roster Item Exchange packets.<p> + * + * The 'jabber:x:roster' namespace (which is not to be confused with the 'jabber:iq:roster' + * namespace) is used to send roster items from one client to another. A roster item is sent by + * adding to the <message/> element an <x/> child scoped by the 'jabber:x:roster' namespace. This + * <x/> element may contain one or more <item/> children (one for each roster item to be sent).<p> + * + * Each <item/> element may possess the following attributes:<p> + * + * <jid/> -- The id of the contact being sent. This attribute is required.<br> + * <name/> -- A natural-language nickname for the contact. This attribute is optional.<p> + * + * Each <item/> element may also contain one or more <group/> children specifying the + * natural-language name of a user-specified group, for the purpose of categorizing this contact + * into one or more roster groups. + * + * @author Gaston Dombiak + */ +public class RosterExchange implements PacketExtension { + + private List<RemoteRosterEntry> remoteRosterEntries = new ArrayList<RemoteRosterEntry>(); + + /** + * Creates a new empty roster exchange package. + * + */ + public RosterExchange() { + super(); + } + + /** + * Creates a new roster exchange package with the entries specified in roster. + * + * @param roster the roster to send to other XMPP entity. + */ + public RosterExchange(Roster roster) { + // Add all the roster entries to the new RosterExchange + for (RosterEntry rosterEntry : roster.getEntries()) { + this.addRosterEntry(rosterEntry); + } + } + + /** + * Adds a roster entry to the packet. + * + * @param rosterEntry a roster entry to add. + */ + public void addRosterEntry(RosterEntry rosterEntry) { + // Obtain a String[] from the roster entry groups name + List<String> groupNamesList = new ArrayList<String>(); + String[] groupNames; + for (RosterGroup group : rosterEntry.getGroups()) { + groupNamesList.add(group.getName()); + } + groupNames = groupNamesList.toArray(new String[groupNamesList.size()]); + + // Create a new Entry based on the rosterEntry and add it to the packet + RemoteRosterEntry remoteRosterEntry = new RemoteRosterEntry(rosterEntry.getUser(), + rosterEntry.getName(), groupNames); + + addRosterEntry(remoteRosterEntry); + } + + /** + * Adds a remote roster entry to the packet. + * + * @param remoteRosterEntry a remote roster entry to add. + */ + public void addRosterEntry(RemoteRosterEntry remoteRosterEntry) { + synchronized (remoteRosterEntries) { + remoteRosterEntries.add(remoteRosterEntry); + } + } + + /** + * Returns the XML element name of the extension sub-packet root element. + * Always returns "x" + * + * @return the XML element name of the packet extension. + */ + public String getElementName() { + return "x"; + } + + /** + * Returns the XML namespace of the extension sub-packet root element. + * According the specification the namespace is always "jabber:x:roster" + * (which is not to be confused with the 'jabber:iq:roster' namespace + * + * @return the XML namespace of the packet extension. + */ + public String getNamespace() { + return "jabber:x:roster"; + } + + /** + * Returns an Iterator for the roster entries in the packet. + * + * @return an Iterator for the roster entries in the packet. + */ + public Iterator<RemoteRosterEntry> getRosterEntries() { + synchronized (remoteRosterEntries) { + List<RemoteRosterEntry> entries = Collections.unmodifiableList(new ArrayList<RemoteRosterEntry>(remoteRosterEntries)); + return entries.iterator(); + } + } + + /** + * Returns a count of the entries in the roster exchange. + * + * @return the number of entries in the roster exchange. + */ + public int getEntryCount() { + return remoteRosterEntries.size(); + } + + /** + * Returns the XML representation of a Roster Item Exchange according the specification. + * + * Usually the XML representation will be inside of a Message XML representation like + * in the following example: + * <pre> + * <message id="MlIpV-4" to="gato1@gato.home" from="gato3@gato.home/Smack"> + * <subject>Any subject you want</subject> + * <body>This message contains roster items.</body> + * <x xmlns="jabber:x:roster"> + * <item jid="gato1@gato.home"/> + * <item jid="gato2@gato.home"/> + * </x> + * </message> + * </pre> + * + */ + public String toXML() { + StringBuilder buf = new StringBuilder(); + buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()).append( + "\">"); + // Loop through all roster entries and append them to the string buffer + for (Iterator<RemoteRosterEntry> i = getRosterEntries(); i.hasNext();) { + RemoteRosterEntry remoteRosterEntry = i.next(); + buf.append(remoteRosterEntry.toXML()); + } + buf.append("</").append(getElementName()).append(">"); + return buf.toString(); + } + +} |