/**
* 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.HashMap;
import java.util.Map;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.RegistryFactory;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.URIConverter;
/**
* A plugin extension reader that populates the
* {@link org.eclipse.emf.ecore.resource.URIConverter#URI_MAP global} mapping registry.
* Clients are not expected to use this class directly.
*/
class URIMappingRegistryReader extends RegistryReader
{
static final String TAG_MAPPING = "mapping";
static final String ATT_SOURCE = "source";
static final String ATT_TARGET = "target";
protected Map<URI, IConfigurationElement> map = new HashMap<URI, IConfigurationElement>();
public URIMappingRegistryReader()
{
super
(RegistryFactory.getRegistry(),
EcorePlugin.INSTANCE.getSymbolicName(),
EcorePlugin.URI_MAPPING_PPID);
}
@Override
protected boolean readElement(IConfigurationElement element, boolean add)
{
if (element.getName().equals(TAG_MAPPING))
{
String sourceURIValue = element.getAttribute(ATT_SOURCE);
if (sourceURIValue == null)
{
logMissingAttribute(element, ATT_SOURCE);
}
else
{
String targetURIValue = element.getAttribute(ATT_TARGET);
if (targetURIValue == null)
{
logMissingAttribute(element, ATT_TARGET);
}
else if (add)
{
URI sourceURI = URI.createURI(sourceURIValue);
URI targetURI = URI.createURI(targetURIValue);
if (targetURI.isRelative() && targetURI.hasRelativePath())
{
targetURI =
targetURI.resolve
(URI.createPlatformPluginURI(element.getDeclaringExtension().getContributor().getName() + "/", true));
}
URIConverter.URI_MAP.put(sourceURI, targetURI);
IConfigurationElement previous = map.put(sourceURI, element);
if (previous != null)
{
EcorePlugin.INSTANCE.log
("Both '" + previous.getContributor().getName() + "' and '" + element.getContributor().getName() + "' register a URI mapping for '" + sourceURI + "'");
}
return true;
}
else
{
URI sourceURI = URI.createURI(sourceURIValue);
URIConverter.URI_MAP.remove(sourceURI);
map.remove(sourceURI);
return true;
}
}
}
return false;
}
}