/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Created on 28 July 2002, 16:03
*/
package org.geotools.filter;
import org.opengis.filter.expression.Expression;
/**
* A function that returns the minimum of two arguments.
*
* @author James
* @source $URL$
* @version $Id$
* @deprecated - use org.geotools.filter.function.math.MinFunction instead
*/
public class MinFunction extends FunctionExpressionImpl{
/**
* Creates a new instance of MinFunction
*/
public MinFunction() {
super("Min");
}
/**
* Returns a value for this expression.
*
* @param feature Specified feature to use when returning value.
*
* @return Value of the feature object.
*/
public Object evaluate(Object feature) {
org.opengis.filter.expression.Expression expA = (Expression) getParameters().get(0);
org.opengis.filter.expression.Expression expB = (Expression) getParameters().get(1);
double first = ((Number) expA.evaluate(feature)).doubleValue();
double second = ((Number) expB.evaluate(feature)).doubleValue();
return new Double(Math.min(first, second));
}
/**
* Gets the number of arguments that are set.
*
* @return the number of args.
*/
public int getArgCount() {
return 2;
}
}