schema.generated_package.exsd Maven / Gradle / Ivy
This extension point is used to register a generated Ecore package against a namespace URI (Uniform Resource Identifier) in EMF's global package registry, <samp>EPackage.Registry.INSTANCE</samp>. When a model instance is loaded from its serialized form, this registry may be consulted in order to obtain the correct metamodel that is to be instantiated.
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 that uniquely identifies an Ecore package.
The plugin relative URI of the generator model resource for the package.
A fully qualified name of the generated Java package interface.
1.0.0
Following is an example of how a package can be registered:
<pre>
<extension point="org.eclipse.emf.ecore.generated_package" >
<package uri="http://www.eclipse.org/xsd/2002/XSD" class="org.eclipse.xsd.XSDPackage"/>
</extension>
</pre>
The value of the class attribute must represent a generated package interface that extends <samp>org.eclipse.emf.ecore.EPackage</samp> and has a static <samp>eINSTANCE</samp> singleton field.
<p>
An EMF package can also be registered from the source code with the <samp>EPackage.Registry.INSTANCE</samp> as follows:
</p>
<pre>
EPackage.Registry.INSTANCE.put(companyPackage.getNsURI(), companyPackage);
</pre>
This plug-in extends this extension point to register the following three required Ecore packages: <samp>EcorePackage</samp>, <samp>XMLTypePackage</samp> and <samp>XMLNamespacePackage</samp>. In addition, for any model plug-in generated by EMF, an extension to this point is included in the manifest file, to register packages in that model.
Copyright (c) 2002, 2004 IBM Corporation 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>