plugins/org.eclipse.egf.core/src/org/eclipse/egf/core/epackage/ProxyTargetPlatformFactory.java

/**
 *  Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 *  This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v2.0
 *  which accompanies this distribution, and is available at
 *  https://www.eclipse.org/legal/epl-v2.0.
 *
 *  SPDX-License-Identifier: EPL-2.0
 * 
 *  Contributors:
 *      Thales Corporate Services S.A.S - initial API and implementation
 */
package org.eclipse.egf.core.epackage;

import org.eclipse.egf.core.EGFCorePlugin;
import org.eclipse.egf.core.genmodel.IPlatformGenModel;
import org.eclipse.emf.common.util.URI;

/**
 * @author Xavier Maysonnave
 * 
 */
public class ProxyTargetPlatformFactory {

	public ProxyTargetPlatformFactory() {
		// Nothing to do
	}

	protected static URI getEPackageNsURI(URI uri) {
		if (uri == null) {
			return null;
		}
		String innerUri = uri.toString();
		if (innerUri.contains("#//") == false) { //$NON-NLS-1$
			return uri;
		}
		return URI.createURI(innerUri.substring(0, innerUri.indexOf("#//"))); //$NON-NLS-1$
	}

	public IProxyEObject getIProxyEObject(URI uri) {
		IProxyERoot proxy = getIProxyERoot(uri);
		if (proxy != null) {
			return proxy.getIProxyEObject(uri);
		}
		return null;
	}

	public IProxyEPackage getIProxyEPackage(URI uri) {
		IProxyERoot proxy = getIProxyERoot(uri);
		if (proxy != null && proxy.getChildren().length == 1) {
			return proxy.getChildren()[0];
		}
		return null;
	}

	public IProxyERoot getIProxyERoot(URI uri) {
		// Ignore
		if (uri == null) {
			return null;
		}
		// Locate an IPlatformGenModel
		URI nsURI = getEPackageNsURI(uri);
		IPlatformGenModel packageGenModel = EGFCorePlugin.getRuntimePlatformGenModel(nsURI);
		// Not found
		if (packageGenModel == null) {
			return null;
		}
		// Inner ePackage processing if applicable
		URI innerNsURI = packageGenModel.getEPackageNsURI(uri);
		if (innerNsURI != null) {
			packageGenModel = EGFCorePlugin.getRuntimePlatformGenModel(innerNsURI);
		}
		// Not found
		if (packageGenModel == null) {
			return null;
		}
		// Build an ERootWrapper
		return packageGenModel.getIProxyERoot();
	}

}