/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2004-2008, 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.text.ecql;
import org.geotools.filter.text.commons.BuildResultStack;
import org.geotools.filter.text.cql2.CQLException;
import org.opengis.filter.FilterFactory;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.expression.Function;
/**
* Makes a relate filter function
*
* @author Mauricio Pazos (Axios Engineering)
* @since 2.6
*/
final class RelateBuilder extends FunctionBuilder{
public RelateBuilder(BuildResultStack resultStack,
FilterFactory filterFactory) {
super(resultStack, filterFactory);
}
@Override
public Function build() throws CQLException {
Expression[] args = buildParameters();
Function relate = getFilterFactory().function("relate", args);
return relate;
}
private Expression[] buildParameters() throws CQLException {
Expression[] args =new Expression[2];
args[1] = getResultStack().popExpression();
args[0] = getResultStack().popExpression();
return args;
}
}