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Plugin for extending test environment classpath

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/*
 * Copyright (c) 2007, Red Hat Middleware, LLC. All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, v. 2.1. This program is distributed in the
 * hope that it will be useful, but WITHOUT A WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. You should have received a
 * copy of the GNU Lesser General Public License, v.2.1 along with this
 * distribution; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Red Hat Author(s): Steve Ebersole
 */
package org.jboss.maven.shared.xml.dom4j;

import org.dom4j.Element;
import org.dom4j.Attribute;

/**
 * Extracts the value of an attribute
 *
 * @author Steve Ebersole
 */
public class AttributeValueExtracter extends ExtracterSupport {
	private final String attributeName;

	public AttributeValueExtracter(String attributeName, boolean required, String defaultValue) {
		super( required, defaultValue );
		this.attributeName = attributeName;
	}

	protected String extractValue(Element element) {
		Attribute attribute = element.attribute( attributeName );
		return attribute == null ? null : attribute.getValue();
	}
}