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<H1><A name="Describingcomponents-DescribingyouriPOJOcomponents"></A>Describing your iPOJO components</H1>
<P>This section describes the different features supported by iPOJO. In fact, this page aims to answer to the following question: <EM>&quot;What can I write in my iPOJO component descriptor (i.e. the metadata.xml file)?&quot;</EM></P>
<H2><A name="Describingcomponents-Corefeatures"></A>Core features</H2>
<P>Core features are provided with the iPOJO runtime bundles. You can use it directly, as soon as the iPOJO runtime is deployed.</P>
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<LI><A href="service-requirement-handler.html" title="Service Requirement Handler">Service Dependencies</A></LI>
<LI><A href="providing-osgi-services.html" title="Providing OSGi services">Service Providing</A></LI>
<LI><A href="lifecycle-callback-handler.html" title="Lifecycle Callback Handler">Lifecycle Callbacks</A></LI>
<LI><A href="configuration-handler.html" title="Configuration Handler">Configuration</A></LI>
<LI><A href="architecture-handler.html" title="Architecture Handler">Architecture</A></LI>
<LI><A href="controller-lifecycle-handler.html" title="Controller Lifecycle Handler">Lifecycle Controller</A></LI>
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<H2><A name="Describingcomponents-Extensions"></A>Extensions</H2>
<P>Extensions <EM>extend</EM> the iPOJO model to add some specific functionalities. This is made thanks to the external handler mechanism. So before using one of these features, deploy the attached external handler.</P>
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<LI><A href="event-admin-handlers.html" title="Event Admin Handlers">Event Admin Handlers</A>: allows receiving and sending events through the event admin.</LI>
<LI><A href="ipojo-jmx-handler.html" title="iPOJO JMX Handler">iPOJO JMX Handler</A>: allows managing your instances with JMX</LI>
<LI><A href="extender-pattern-handler.html" title="Extender Pattern Handler">Extender Pattern Handler</A>: simplifies the implementation of extender pattern</LI>
<LI><A href="white-board-pattern-handler.html" title="White Board Pattern Handler">White Board Pattern Handler</A>: simplifies the implementation of a white board patternh1. Describing your components</LI>
<LI><A href="temporal-service-dependency.html" title="Temporal Service Dependency">Temporal Service Dependency</A>: provides a temporal service depednency mechanism, stopping threads during service lookup</LI>
</UL>
<H2><A name="Describingcomponents-Amissingfunctionality%3F"></A>A missing functionality ?</H2>
<P>iPOJO component model is extensible. So, you can implement your own handler managing you specific requirement. Refer the handler development guide (<A href="how-to-write-your-own-handler.html" title="How to write your own handler">How to write your own handler</A>) for more details.</P></TD>
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<H6><A name="Describingcomponents-Overview"></A><B>Overview</B></H6>
<UL>
<LI><A href="apache-felix-ipojo.html" title="Apache Felix iPOJO">Home Page</A></LI>
<LI><A href="apache-felix-ipojo-feature-overview.html" title="Apache Felix iPOJO Feature Overview">iPOJO Feature Overview</A></LI>
<LI><A href="download.html" title="Download">Download &amp; Install </A></LI>
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<H6><A name="Describingcomponents-GettingStarted"></A><B>Getting Started</B></H6>
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<LI><A href="ipojo-in-10-minutes.html" title="iPOJO in 10 minutes">iPOJO in 10 minutes</A></LI>
<LI><A href="ipojo-hello-word-maven-based-tutorial.html" title="iPOJO Hello Word (Maven-Based) tutorial">iPOJO Hello Word &#40;Maven&#45;Based&#41; tutorial</A></LI>
<LI><A href="ipojo-advanced-tutorial.html" title="iPOJO Advanced Tutorial">iPOJO Advanced Tutorial</A></LI>
</UL>
<H6><A name="Describingcomponents-UserGuide"></A><B>User Guide</B></H6>
<UL>
<LI><A href="#" title="Describing components">Describing components (handler list) </A></LI>
<LI><A href="how-to-use-ipojo-annotations.html" title="How to use iPOJO Annotations">How to use iPOJO Annotations</A></LI>
<LI><A href="using-xml-schemas.html" title="Using XML Schemas">Using XML Schemas</A></LI>
<LI><A href="ipojo-advanced-topics.html" title="iPOJO Advanced Topics">Advanced Topics</A></LI>
<LI><A href="ipojo-faq.html" title="iPOJO FAQ">FAQ</A></LI>
</UL>
<H6><A name="Describingcomponents-Tools"></A><B>Tools</B></H6>
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<LI><A href="ipojo-eclipse-plug-in.html" title="iPOJO Eclipse Plug-in">iPOJO Eclipse Plug&#45;in</A></LI>
<LI><A href="ipojo-ant-task.html" title="iPOJO Ant Task">iPOJO Ant Task</A></LI>
<LI><A href="ipojo-maven-plug-in.html" title="iPOJO Maven Plug-in">iPOJO Maven Plug&#45;in</A></LI>
<LI><A href="ipojo-concepts-overview.html" title="iPOJO Concepts Overview">iPOJO concepts overview</A></LI>
</UL>
<H6><A name="Describingcomponents-DeveloperGuide"></A><B>Developer Guide</B></H6>
<UL>
<LI>API: <SPAN class="nobr"><A href="http://people.apache.org/~clement/ipojo/api/0.8/" title="Visit page outside Confluence" rel="nofollow">0.8<SUP><IMG class="rendericon" src="../../cwiki.apache.org/confluence/images/icons/linkext7.gif" height="7" width="7" align="absmiddle" alt="" border="0"></SUP></A></SPAN></LI>
<LI><A href="how-to-write-your-own-handler.html" title="How to write your own handler">How to write your own handler</A></LI>
<LI><A href="how-to-use-ipojo-manipulation-metadata.html" title="How to use iPOJO Manipulation Metadata">How to use iPOJO Manipulation Metadata</A></LI>
</UL>
<H6><A name="Describingcomponents-Misc%26Contact"></A><B>Misc &amp; Contact</B></H6>
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<LI><A href="apache-felix-ipojo-issuestracker.html" title="apache-felix-ipojo-issuestracker">Issues Tracker</A></LI>
<LI><A href="apache-felix-ipojo-supportedvms.html" title="apache-felix-ipojo-supportedVMs">Supported JVMs</A></LI>
<LI><A href="apache-felix-ipojo-supportedosgi.html" title="apache-felix-ipojo-supportedOSGi">Supported OSGi Implementations</A></LI>
<LI><A href="future-ideas.html" title="Future Ideas">Future Ideas</A></LI>
<LI><A href="contact.html" title="Contact">Contact</A></LI>
<LI><A href="related-works.html" title="Related Works">Related Works</A></LI>
<LI><A href="article-presentations.html" title="Article & Presentations">Article &amp; Presentations</A></LI>
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