/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2005-2008, 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.
*/
package org.geotoolkit.filter.function.other;
import org.geotoolkit.filter.function.AbstractFunction;
import org.apache.sis.util.ObjectConverters;
import org.opengis.filter.expression.Expression;
public class ConvertFunction extends AbstractFunction {
public ConvertFunction(final Expression expr1, final Expression expr2) {
super(OtherFunctionFactory.CONVERT, new Expression[]{expr1,expr2}, null);
}
@Override
public Object evaluate(final Object feature) {
try {
Object arg = parameters.get(0).evaluate(feature);
Class target = parameters.get(1).evaluate(feature, Class.class);
return ObjectConverters.convert(arg, target);
} catch (Exception e) {
throw new IllegalArgumentException(
"Filter Function problem for function convert argument #1 - expected type Class");
}
}
}