IdIntrospector.java

/*******************************************************************************
 *  Copyright (c) 2012 Google, Inc.
 *  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:
 *  Google, Inc. - initial API and implementation
 *******************************************************************************/
package com.windowtester.runtime.gef.internal.reflect;

import com.windowtester.internal.runtime.reflect.Reflector;

/**
 * Id accessor service.
 */
public class IdIntrospector {

	private final String idKey;

	public IdIntrospector(String id) {
		this.idKey = id;
	}
	
	public static IdIntrospector forName(String id) {
		return new IdIntrospector(id);
	}

	public String getId(Object o) {
		if (o == null)
			return null;
		Reflector reflector = Reflector.forObject(o);
		if (!reflector.supports(idKey))
			return null;
		return (String) reflector.invoke(idKey);
	}
	
	
}