/**
* Copyright (c) 2002-2006 IBM Corporation and others.
* 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
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM - Initial API and implementation
*/
package org.eclipse.emf.ecore.plugin;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
/**
* A plugin extension reader that populates the
* {@link org.eclipse.emf.ecore.EPackage.Registry#INSTANCE global} package registry.
* Clients are not expected to use this class directly.
*/
class GeneratedPackageRegistryReader extends RegistryReader
{
static final String TAG_PACKAGE = "package";
static final String ATT_URI = "uri";
static final String ATT_CLASS = "class";
static final String ATT_GEN_MODEL = "genModel";
protected Map<String, URI> ePackageNsURIToGenModelLocationMap;
public GeneratedPackageRegistryReader()
{
super
(Platform.getExtensionRegistry(),
EcorePlugin.getPlugin().getBundle().getSymbolicName(),
EcorePlugin.GENERATED_PACKAGE_PPID);
}
public GeneratedPackageRegistryReader(Map<String, URI> ePackageNsURIToGenModelLocationMap)
{
this();
this.ePackageNsURIToGenModelLocationMap = ePackageNsURIToGenModelLocationMap;
}
@Override
protected boolean readElement(IConfigurationElement element, boolean add)
{
if (element.getName().equals(TAG_PACKAGE))
{
String packageURI = element.getAttribute(ATT_URI);
if (packageURI == null)
{
logMissingAttribute(element, ATT_URI);
}
else if (element.getAttribute(ATT_CLASS) == null)
{
logMissingAttribute(element, ATT_CLASS);
}
else if (add)
{
Object previous = EPackage.Registry.INSTANCE.put(packageURI, new EPackageDescriptor(element, ATT_CLASS));
if (previous instanceof PluginClassDescriptor)
{
PluginClassDescriptor descriptor = (PluginClassDescriptor)previous;
EcorePlugin.INSTANCE.log
("Both '" + descriptor.element.getContributor().getName() + "' and '" + element.getContributor().getName() + "' register a package for '" + packageURI + "'");
}
if (ePackageNsURIToGenModelLocationMap != null)
{
String genModel = element.getAttribute(ATT_GEN_MODEL);
if (genModel != null)
{
URI genModelURI = URI.createURI(genModel);
if (genModelURI.isRelative())
{
genModelURI = URI.createPlatformPluginURI(element.getDeclaringExtension().getContributor().getName() + "/" + genModel, true);
}
ePackageNsURIToGenModelLocationMap.put(packageURI, genModelURI);
}
}
return true;
}
else
{
EPackage.Registry.INSTANCE.remove(packageURI);
if (ePackageNsURIToGenModelLocationMap != null)
{
ePackageNsURIToGenModelLocationMap.remove(packageURI);
}
return true;
}
}
return false;
}
}