jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/jdtutility/ShortCircuitArrayAnnotationElementAdapter.java

/*******************************************************************************
 * Copyright (c) 2007 Oracle. 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:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.core.internal.jdtutility;

import java.util.Arrays;

/**
 * Wrap another annotation element adapter and short-circuit the
 * #setValue method if the value has not changed. Overrides valuesAreEqual
 * to check equality on arrays
 */
public class ShortCircuitArrayAnnotationElementAdapter 
	extends ShortCircuitAnnotationElementAdapter
{
	// ********** constructor **********

	public ShortCircuitArrayAnnotationElementAdapter(Member member, DeclarationAnnotationElementAdapter daea) {
		super(member, daea);
	}

	public ShortCircuitArrayAnnotationElementAdapter(AnnotationElementAdapter adapter) {
		super(adapter);
	}


	// ********** AnnotationElementAdapter implementation **********

	@Override
	protected boolean valuesAreEqual(Object oldValue, Object newValue) {
		Object[] oldValueArray = (Object[]) oldValue;
		Object[] newValueArray = (Object[]) newValue;
		
		return Arrays.equals(newValueArray, oldValueArray);
	}

}