2003-08-19 15:20:42 +02:00
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<title>Roster Item Exchange</title>
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2003-08-29 20:47:39 +02:00
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<link rel="stylesheet" type="text/css" href="style.css" />
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2003-08-19 15:20:42 +02:00
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</head>
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<body>
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2003-08-29 20:47:39 +02:00
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<div class="header">Roster Item Exchange</div><p>
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2003-08-19 15:20:42 +02:00
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This extension is used to send rosters, roster groups and roster entries from one XMPP
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Entity to another. It also provides an easy way to hook up custom logic when entries
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are received from other XMPP clients.
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<p>Follow these links to learn how to send and receive roster items:</p>
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<ul>
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<li><a href="#riesendroster">Send a complete roster</a></li>
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<li><a href="#riesendgroup">Send a roster's group</a></li>
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<li><a href="#riesendentry">Send a roster's entry</a></li>
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<li><a href="#riercventry">Receive roster entries</a></li>
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</ul>
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<b>JEP related:</b> <a href="http://www.jabber.org/jeps/jep-0093.html">JEP-93</a>
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2003-08-29 20:47:39 +02:00
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2003-08-19 15:20:42 +02:00
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<hr>
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2003-08-29 20:47:39 +02:00
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<div class="subheader"><a name="riesendroster">Send a entire roster</a></div><p>
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<b>Description</b><p>
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2003-08-19 15:20:42 +02:00
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Sometimes it is useful to send a whole roster to another user. Smack provides a
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2003-08-29 20:47:39 +02:00
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very easy way to send a complete roster to another XMPP client.</p>
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<b>Usage</b><p>
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2003-08-19 15:20:42 +02:00
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Create an instance of <i><b>RosterExchangeManager</b></i> and use the <b>#send(Roster, String)</b>
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message to send a roster to a given user. The first parameter is the roster to send and
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2003-08-29 20:47:39 +02:00
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the second parameter is the id of the user that will receive the roster entries.</p>
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<b>Example</b><p>
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2003-08-19 15:20:42 +02:00
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In this example we can see how user1 sends his roster to user2.
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<blockquote>
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<pre> <font color="#3f7f5f">// Connect to the server and log in</font>
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2014-05-25 12:28:08 +02:00
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conn1 = new XMPPTCPConnection(host);
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conn1.login(server_user1, pass1);
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<font color="#3f7f5f">// Create a new roster exchange manager on conn1</font>
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RosterExchangeManager rosterExchangeManager = new RosterExchangeManager(conn1);
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<font color="#3f7f5f">// Send user1's roster to user2</font>
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rosterExchangeManager.send(conn1.getRoster(), user2);
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</pre>
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</blockquote>
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2003-08-29 20:47:39 +02:00
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2003-08-19 15:20:42 +02:00
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<hr>
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2003-08-29 20:47:39 +02:00
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<div class="subheader"><a name="riesendgroup">Send a roster group</a></div><p>
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<b>Description</b><p>
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2003-08-19 15:20:42 +02:00
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It is also possible to send a roster group to another XMPP client. A roster group groups
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a set of roster entries under a name.</p>
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<b>Usage</b><p>
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2003-08-19 15:20:42 +02:00
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Create an instance of <i><b>RosterExchangeManager</b></i> and use the <b>#send(RosterGroup, String)</b>
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message to send a roster group to a given user. The first parameter is the roster group to send and
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the second parameter is the id of the user that will receive the roster entries.</p>
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<b>Example</b><p>
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2003-08-19 15:20:42 +02:00
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In this example we can see how user1 sends his roster groups to user2.
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<blockquote>
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<pre> <font color="#3f7f5f">// Connect to the server and log in</font>
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conn1 = new XMPPTCPConnection(host);
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conn1.login(server_user1, pass1);
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<font color="#3f7f5f">// Create a new roster exchange manager on conn1</font>
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RosterExchangeManager rosterExchangeManager = new RosterExchangeManager(conn1);
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<font color="#3f7f5f">// Send user1's RosterGroups to user2</font>
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for (Iterator it = conn1.getRoster().getGroups(); it.hasNext(); )
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rosterExchangeManager.send((RosterGroup)it.next(), user2);
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</pre>
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</blockquote>
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2003-08-29 20:47:39 +02:00
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2003-08-19 15:20:42 +02:00
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<hr>
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2003-08-29 20:47:39 +02:00
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<div class="subheader"><a name="riesendentry">Send a roster entry</a></div><p>
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<b>Description</b><p>
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2003-08-19 15:20:42 +02:00
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Sometimes you may need to send a single roster entry to another XMPP client. Smack also lets you send
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2003-08-29 20:47:39 +02:00
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items at this granularity level.</p>
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<b>Usage</b><p>
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2003-08-19 15:20:42 +02:00
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Create an instance of <i><b>RosterExchangeManager</b></i> and use the <b>#send(RosterEntry, String)</b>
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message to send a roster entry to a given user. The first parameter is the roster entry to send and
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2003-08-29 20:47:39 +02:00
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the second parameter is the id of the user that will receive the roster entries.</p>
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<b>Example</b><p>
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2003-08-19 15:20:42 +02:00
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In this example we can see how user1 sends a roster entry to user2.
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<blockquote>
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<pre> <font color="#3f7f5f">// Connect to the server and log in</font>
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conn1 = new XMPPTCPConnection(host);
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conn1.login(server_user1, pass1);
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<font color="#3f7f5f">// Create a new roster exchange manager on conn1</font>
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RosterExchangeManager rosterExchangeManager = new RosterExchangeManager(conn1);
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<font color="#3f7f5f">// Send a roster entry (any) to user2</font>
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rosterExchangeManager1.send((RosterEntry)conn1.getRoster().getEntries().next(), user2);
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</pre>
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</blockquote>
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2003-08-29 20:47:39 +02:00
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<hr>
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<div class="subheader"><a name="riercventry">Receive roster entries</a></div><p>
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<b>Description</b><p>
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2003-08-19 15:20:42 +02:00
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Since roster items are sent between XMPP clients, it is necessary to listen to possible roster entries
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receptions. Smack provides a mechanism that you can use to execute custom logic when roster entries are
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received.</p>
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<b>Usage</b><p>
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2003-08-19 15:20:42 +02:00
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<ol>
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<li>Create a class that implements the <i><b>RosterExchangeListener</b></i> interface.</li>
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<li>Implement the method <b>entriesReceived(String, Iterator)</b> that will be called when new entries
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are received with custom logic.</li>
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2014-03-10 09:45:50 +01:00
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<li>Add the listener to the <i>RosterExchangeManager</i> that works on the desired <i>XMPPConnection</i>.</li>
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</ol></p>
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<b>Example</b><p>
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2003-08-19 15:20:42 +02:00
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In this example we can see how user1 sends a roster entry to user2 and user2 adds the received
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entries to his roster.
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<blockquote>
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<pre> <font color="#3f7f5f">// Connect to the server and log in the users</font>
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conn1 = new XMPPTCPConnection(host);
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conn1.login(server_user1, pass1);
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conn2 = new XMPPTCPConnection(host);
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conn2.login(server_user2, pass2);
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final Roster user2_roster = conn2.getRoster();
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<font color="#3f7f5f">// Create a RosterExchangeManager that will help user2 to listen and accept
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the entries received</font>
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RosterExchangeManager rosterExchangeManager2 = new RosterExchangeManager(conn2);
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<font color="#3f7f5f">// Create a RosterExchangeListener that will iterate over the received roster entries</font>
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RosterExchangeListener rosterExchangeListener = new RosterExchangeListener() {
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public void entriesReceived(String from, Iterator remoteRosterEntries) {
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while (remoteRosterEntries.hasNext()) {
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try {
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<font color="#3f7f5f">// Get the received entry</font>
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RemoteRosterEntry remoteRosterEntry = (RemoteRosterEntry) remoteRosterEntries.next();
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<font color="#3f7f5f">// Display the remote entry on the console</font>
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System.out.println(remoteRosterEntry);
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<font color="#3f7f5f">// Add the entry to the user2's roster</font>
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user2_roster.createEntry(
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remoteRosterEntry.getUser(),
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remoteRosterEntry.getName(),
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remoteRosterEntry.getGroupArrayNames());
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}
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catch (XMPPException e) {
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e.printStackTrace();
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}
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}
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}
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};
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<font color="#3f7f5f">// Add the RosterExchangeListener to the RosterExchangeManager that user2 is using</font>
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rosterExchangeManager2.addRosterListener(rosterExchangeListener);
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<font color="#3f7f5f">// Create a RosterExchangeManager that will help user1 to send his roster</font>
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RosterExchangeManager rosterExchangeManager1 = new RosterExchangeManager(conn1);
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<font color="#3f7f5f">// Send user1's roster to user2</font>
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rosterExchangeManager1.send(conn1.getRoster(), user2);
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</pre>
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</blockquote>
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</body>
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2014-05-25 12:28:08 +02:00
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</html>
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