/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2009, Open Source Geospatial Foundation (OSGeo)
* (C) 2009, Geomatys
*
* 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.
*/
package org.geotoolkit.filter.function.math;
import org.geotoolkit.filter.function.AbstractFunction;
import org.opengis.filter.expression.Expression;
public class MaxFunction extends AbstractFunction {
public MaxFunction(final Expression expression1, final Expression expression2) {
super(MathFunctionFactory.MAX, new Expression[] {expression1, expression2}, null);
}
@Override
public Object evaluate(final Object feature) {
final Number number1 = parameters.get(0).evaluate(feature, Number.class);
if (number1 == null) {
throw new IllegalArgumentException(
"Filter Function problem for function max argument #0 - expected type double");
}
final Number number2 = parameters.get(1).evaluate(feature, Number.class);
if (number2 == null) {
throw new IllegalArgumentException(
"Filter Function problem for function max argument #1 - expected type double");
}
if (number1 instanceof Integer && number2 instanceof Integer) {
return Math.max(number1.intValue(), number2.intValue());
}
if (number1 instanceof Double && number2 instanceof Double) {
return Math.max(number1.doubleValue(), number2.doubleValue());
}
if (number1 instanceof Float && number2 instanceof Float) {
return Math.max(number1.floatValue(), number2.floatValue());
}
if (number1 instanceof Long && number2 instanceof Long) {
return Math.max(number1.longValue(), number2.longValue());
}
if (number1 instanceof Short && number2 instanceof Short) {
return Math.max(number1.shortValue(), number2.shortValue());
}
throw new IllegalArgumentException(
"Filter Function problem for function abs argument #0 - expected type number");
}
}