org.eclipse.gmf.runtime.emf.core/src/org/eclipse/gmf/runtime/emf/core/util/EObjectContainmentLoadingEList.java

/******************************************************************************
 * Copyright (c) 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.gmf.runtime.emf.core.util;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.util.EObjectContainmentEList;

import org.eclipse.gmf.runtime.emf.core.internal.resources.LogicalResourceUtil;


/**
 * Specialized containment reference list that automatically loads sub-unit
 * objects when they are retrieved from the list.
 *
 * @author Christian W. Damus (cdamus)
 */
public class EObjectContainmentLoadingEList
	extends EObjectContainmentEList {

	private static final long serialVersionUID = 1L;
	
	/**
	 * Initializes me with my contained type, owning object, and feature ID.
	 * 
	 * @param dataClass my contained type
	 * @param owner the object that owns me
	 * @param featureID the ID of the feature that I implement
	 */
	public EObjectContainmentLoadingEList(Class dataClass,
			InternalEObject owner, int featureID) {
		super(dataClass, owner, featureID);
	}

	protected Object resolve(int index, Object object) {
		EObject eObject = (EObject) object;
		Resource res = getEObject().eResource();
		
		if (res != null) {
			LogicalResourceUtil.autoload(res, eObject);
		}
		
		return eObject;
	}
}