/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2005 Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.filter.expression;
// Annotations
import org.opengis.annotation.XmlElement;
/**
* Encodes the operation of subtraction where the second argument is subtracted from the first.
* <p>
* Instances of this interface implement their {@link #evaluate evaluate} method by
* computing the numeric difference between the {@linkplain #getExpression1 first} and
* {@linkplain #getExpression2 second} operand.
* </p>
*
* @source $URL: http://svn.osgeo.org/geotools/trunk/modules/library/opengis/src/main/java/org/opengis/filter/expression/Subtract.java $
* @version <A HREF="http://www.opengis.org/docs/02-059.pdf">Implementation specification 1.0</A>
* @author Chris Dillard (SYS Technologies)
* @since GeoAPI 2.0
*/
@XmlElement("Sub")
public interface Subtract extends BinaryExpression {
/** Operator name used to check FilterCapabilities */
public static String NAME = "Sub";
}