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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/branches/smack_3_3_1@13692 b35dd754-fafc-0310-a699-88a17e54d16e
63 lines
2.2 KiB
HTML
63 lines
2.2 KiB
HTML
<html>
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<head>
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<title>Entity Capabilities</title>
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<link rel="stylesheet" type="text/css" href="style.css" />
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</head>
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<body>
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<div class="header">Entity Capabilities</div><p>
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This section details the usage of Smacks implementation of Entity Capabilities.
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</p>
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<b>XEP related:</b> <a href="http://xmpp.org/extensions/xep-0115.html">XEP-0115: Entity Capabilities</a>
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<hr>
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<b>Description</b><p>
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Entity Capabilities is a XMPP Protocol extension, which, in order to minimize network impact, caches the capabilities of XMPP entities. Those capabilities are determined with the help of the Service Discovery Protocol (<a href="http://xmpp.org/extensions/xep-0030.html">XEP-0030</a>).
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</p>
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<b>Usage</b><p>
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Entity Capabilities work silenty in background when enabled. If the remote XMPP entity does not support XEP-0115 but XEP-0030 then XEP-0030 mechanisms are transparently used. You can enable or disable Entity Capabilities by using <i><b>EntityCapsManager</b></i>.<br>
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The cache used by Smack for Entity Capabilities is non-persistent as default. That is, the cache only uses memory. But it is also possible to set a persistent Entity Capabilities cache, which is recommended.
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</p>
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<b>Examples</b><p>
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Enable Entity Capabilities
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<br>
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<blockquote>
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<pre>
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<font color="#3f7f5f">// Get an instance of entity caps manager for the specified connection</font>
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Entity CapabilitiesManager mgr = new EntityCapsManager.getInstanceFor(con);
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<font color="#3f7f5f">// Enable entity capabilities</font>
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mgr.enableEntityCaps();
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</pre>
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</blockquote>
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Configure a persistent cache for Entity Capabilities
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<br>
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<blockquote>
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<pre>
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<font color="#3f7f5f">// Get an instance of entity caps manager for the specified connection</font>
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Entity CapabilitiesManager mgr = new EntityCapsManager.getInstanceFor(con);
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<font color="#3f7f5f">// Create an cache, see smackx.entitycaps.cache for pre-defined cache implementations</font>
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EntityCapsPersistentCache cache = new SimpleDirectoryPersistentCache(new File("/foo/cachedir"));
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<font color="#3f7f5f">// Set the cache</font>
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mgr.setPersistentCache(cache);
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</pre>
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</blockquote>
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</p>
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<hr>
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</body>
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</html>
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