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/*******************************************************************************
* Copyright (c) 2001, 2005 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 Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.j2ee.common.internal.util;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.wst.common.internal.emf.utilities.IDUtil;
/**
* Utility class for generating and setting unique id's for ref objects contained within a resource. This is needed
* sometimes when a refobject is referenced by an object in a separate resource. This utility will force the refobject
* to notify after the id gets set, using the static feature on this class. The object must be contained in a resource
* for the utility methods to work.
*/
public class IDUtility {
/**
* IDUtility constructor comment.
*/
public IDUtility() {
super();
}
/**
* Generate a default id and notify.
*/
protected static String primSetDefaultID(EObject object) {
return IDUtil.getOrAssignID(object);
}
/**
* Generate a default id and notify.
* Helper for default id generation to support cross document references to non xmi resources
* (eg, xml deployment descriptors); called from overriden accessors in selected objects;
*/
public static String setDefaultID(EObject object) {
if (object == null || object.eResource() == null)
return null;
return primSetDefaultID(object);
}
/**
* Generate a default id and notify, for this object and for all referenced objects that are contained
* within the same resource. Helper for default id generation to support cross document references to non xmi resources
* (eg, xml deployment descriptors); useful for post copy/add
*/
public static String setDefaultID(EObject object, boolean recurseChildren) {
if (object == null || object.eResource() == null)
return null;
String result = primSetDefaultID(object);
if (recurseChildren)
setDefaultIDForChildren(object);
return result;
}
protected static void setDefaultIDForChildren(EObject object) {
List objects = object.eContents();
for (int i = 0; i < objects.size(); i++){
EObject o = (EObject)objects.get(i);
primSetDefaultID(o);
}
}
}
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