/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2011, Open Source Geospatial Foundation (OSGeo)
 *    (C) 2005, Open Geospatial Consortium Inc.
 *    
 *    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.temporal;

import org.opengis.filter.FilterVisitor;
import org.opengis.filter.expression.Expression;
import org.opengis.filter.temporal.Before;
import org.opengis.temporal.RelativePosition;

/**
 * 
 *
 * @source $URL$
 */
public class BeforeImpl extends BinaryTemporalOperatorImpl implements Before {

    public BeforeImpl(Expression e1, Expression e2) {
        super(e1, e2);
    }

    public BeforeImpl(Expression e1, Expression e2, MatchAction matchAction) {
        super(e1, e2, matchAction);
    }

    @Override
    protected boolean doEvaluate(RelativePosition pos) {
        return pos == RelativePosition.BEFORE;
    }

    public Object accept(FilterVisitor visitor, Object extraData) {
        return visitor.visit(this, extraData);
    }

}