emft/facet/pages/_index.html

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<h3>Primary Links</h3>
<ul>
	<li><a id="buttonDownload"
		href="http://wiki.eclipse.org/EMF_Facet/#Install" title="Download">Eclipse
	Distribution, Update Site, Dropins</a></li>
	<li><a id="buttonDocumentation"
		href="http://wiki.eclipse.org/EMF_Facet/#Documentation"
		title="Documentation">Tutorials, Examples, Videos, Reference
	Documentation</a></li>
	<li><a id="buttonSupport"
		href="http://wiki.eclipse.org/EMF_Facet/#Support" title="Support">Bug
	Tracker, Newsgroup, Professional Support</a></li>
	<li><a id="buttonInvolved"
		href="http://wiki.eclipse.org/EMF_Facet/#Getting_Involved"
		title="Getting Involved">SVN, Workspace Setup, Wiki, Committers</a></li>
</ul>
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<h3>EMF Facet</h3>
<!--div id="introText">%%DESCRIPTION%%</div-->

<p>The problem when you develop a tool is that you can never imagine all the possible extensions that the final user will really want. That's why EMF Facet proposes a solution to extend existing Ecore metamodels without having to modify them.</p>
<p>The idea is to provide non-intrusive mechanisms to add new features (types, attributes, operations and references) to a metamodel and to customize the existing features by adding extra properties (icons, labels, etc.)</p>
<p>These mechanisms are based on a query abstraction framework order to use all kinds of queries independently of their implementation language (Java, OCL, ATL, JXPath, etc.)</p>
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	<img src="images/EMFFacetBigPicture.png"/>
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<div class="block">
	<h4>Query abstraction</h4>
	<p>The core service offered by EMF Facet is the capability to abstract the notion of query. The EMF Facet Query Abstraction framework aims:</p>
	<ul>
		<li>to declare a query using any kind of query language such as Java, OCL, ATL, etc.;</li>
		<li>to refer to a query from an EMF model;</li>
		<li>to be able to call a query without having to know how it is implemented.</li>
	</ul>
</div>
<div class="block">
	<h4>Facet</h4>
	<p>The facet feature is the main feature of EMF Facet. This feature offers the possibility to virtually (at runtime) extend existing meta-models and models. In many cases, we want to add additional attributes, references or operations on a model without modifying it or its meta-model, for instance when we are not the author of the meta-model or when the model cannot be recreated with a new version of the meta-model. That's why the goal of EMF Facet is to provide a non intrusive extension mechanism. The other property of EMF Facet is to provide the capability to load and unload the extension without having to re-open the model (or worse: restart Eclipse).</p>
</div>
<div class="block">
	<h4>Customization</h4>
	<p>The customization feature provides a way to add UI annotations on a meta-model. This is useful to describe the customization of a model renderer/editor. This customization framework is extensible to allow the model editor developers to declare properties which are specific to their editors.</p>
</div>
<div class="block">
	<h4>Customizable widgets</h4>
	<p>EMF Facet provides a set of customizable widgets which can be configured using EMF Facet customizations. Those widgets can be used to build your own customizable model editors.</p>
</div>
</div>

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<div>
<h3><a
	href="/projects/project_summary.php?projectid=modeling.emft.emf-facet">About
This Project</a></h3>
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<h6>Incubation</h6>
<div align="center"><a href="/projects/what-is-incubation.php"><img
	align="center" src="/images/egg-incubation.png" border="0"
	alt="Incubation" /></a></div>
<h4>Commit stats</h4>
<a
	href="http://www.eclipse.org/projects/project_summary.php?projectid=modeling.emft.emf-facet"><img
	src="http://dash.eclipse.org/dash/commits/web-app/active-graph.cgi?project=modeling.emft.emf-facet"
	 /></a>
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<h6>Twitter</h6>
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