/*
* 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.
*/
package org.geotools.filter;
import java.util.List;
import org.opengis.filter.expression.Literal;
/**
* A placeholder class used to track a function the user requested
* that is not supported by our java implementation.
* <p>
* This can be used to construct expressions that are to be executed
* by another systems (say as SQL or as a WFS request).
*
* @author Jody Garnett
*
*
* @source $URL$
*/
public class FallbackFunction extends FunctionExpressionImpl {
public FallbackFunction(String name, List params, Literal fallback) {
super(name, fallback);
this.setParameters(params);
}
public int getArgCount() {
return 0;
}
@Override
public Object evaluate(Object object) {
return fallback.evaluate(object);
}
@SuppressWarnings("unchecked")
@Override
public Object evaluate(Object object, Class context) {
return fallback.evaluate( object, context );
}
}