/*
 * Copyright ASFG - Wageningen UR (http://asfg.wur.nl/) (c) 2008.
 *
 * Licensed under the Aduna BSD-style license.
 */
package org.openrdf.query.algebra.evaluation.function.xpath;

import org.openrdf.query.algebra.evaluation.function.Function;

/**
 * Function implementations based on the XPath Function specification (see
 * XQuery 1.0 and XPath 2.0 Functions and Operators,
 * http://www.w3.org/TR/xpath-functions/ ).
 * 
 * All XPath functions use the namespace
 * 'http://www.w3.org/2005/xpath-functions#'.
 * 
 * @author Jeen Broekstra
 */
public interface XPathFunction extends Function {

	/**
	 * The namespace for XPath functions, often abbreviated using the 'fn:'
	 * prefix.
	 */
	public static String FN_NAMESPACE = "http://www.w3.org/2005/xpath-functions#";

}