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PlantUML is a component that allows to quickly write diagrams from text.
This extension point is used to define a factory for query delegates whose type is identified by a URI. The global EMF query delegate factory registry, <samp>QueryDelegate.Factory.Registry.INSTANCE</samp>, is used to record the registration.
A fully qualified identifier of the target extension point.
An optional identifier of the extension instance.
An optional name of the extension instance.
A URI identifying the type of query delegates that can be created by the factory.
The fully qualified name of a Java class implementing <samp>org.eclipse.emf.ecore.util.QueryDelegate.Factory</samp>.
2.7.0
Following is an example of how a query delegate factory can be registered:
<pre>
<extension point="org.eclipse.emf.ecore.query_delegate" >
<factory uri="http://www.eclipse.org/emf/2002/Ecore/OCL" class="org.eclipse.ocl.ecore.delegate.OCLQueryDelegateFactory"/>
</extension>
</pre>
The value of the class attribute must represent a class that implements <samp>org.eclipse.emf.ecore.util.QueryDelegate.Factory</samp> and has a no argument contructor.
<p>
A query delegate factory can be also registered from the source code with the <samp>QueryDelegate.Factory.Registry.INSTANCE</samp> as follows:
</p>
<pre>
QueryDelegate.Factory.Registry.INSTANCE.put("http://www.eclipse.org/emf/2002/Ecore/OCL", new OCLQueryDelegateFactory());
</pre>
Copyright (c) 2010 Kenn Hussey and others.<br>
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at <a
href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a>