Subversion Repositories mkgmap

/*
 * Copyright (C) 2007 Steve Ratcliffe
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  This program 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 General Public License for more details.
 *
 *
 * Author: Steve Ratcliffe
 * Create date: Dec 3, 2007
 */
package uk.me.parabola.mkgmap.filters;

import uk.me.parabola.mkgmap.general.MapElement;

/**
 * A base filter to use that has empty implementations of methods that are not
 * always used.
 *
 * @author Steve Ratcliffe
 */
public class BaseFilter implements MapFilter {
        /**
         * Empty implementation of the init function.
         *
         * @param config Configuration information, giving parameters of the map
         *               level that is being produced through this filter.
         */
        public void init(FilterConfig config) {
        }

        /**
         * Empty implementation.
         *
         * @param element A map element.
         * @param next  This is used to pass the possibly transformed element onward.
         */
        public void doFilter(MapElement element, MapFilterChain next) {
                throw new UnsupportedOperationException();
        }
}