com.googlecode.efactory.util.Resources.java Source code

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Here is the source code for com.googlecode.efactory.util.Resources.java

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/**
 * <copyright>
 *
 * Copyright (c) 2002-2006 Sebastian Benz 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: 
 *   Sebastian Benz - Initial API and implementation
 *
 * </copyright>
 *
 * 
 */
package com.googlecode.efactory.util;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;

public class Resources {

    private Resources() {
        // not intended to be instantiated
    }

    public static <T extends EObject> T getRoot(Resource resource, final Class<T> type) {
        if (resource != null) {
            return type.cast(Iterables.find(resource.getContents(), new Predicate<EObject>() {

                public boolean apply(EObject input) {
                    return type.isInstance(input);
                }
            }));
        }
        throw new IllegalArgumentException("Resource must not be null");
    }

}