Subversion Repositories mkgmap

/*
 * Copyright (C) 2012.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * 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.
 */

package uk.me.parabola.mkgmap.osmstyle.function;

import uk.me.parabola.mkgmap.osmstyle.function.MaxSpeedFunction.SpeedUnit;

/**
 * A factory for style functions.
 * @author WanMil
 */
public class FunctionFactory {

        private FunctionFactory() {
                // hide default public constructor
        }
       
        /**
         * Returns a new instance of a style function with the given name.
         *
         * @param name the style function name
         * @return the style function instance or {@code null} if there is no such function
         */
        public static StyleFunction createFunction(String name) {
                switch (name) {
                case "length":
                        return new LengthFunction();
                case "is_closed":
                        return new IsClosedFunction();
                case "is_complete":
                        return new IsCompleteFunction();
                case "area_size":
                        return new AreaSizeFunction();
                case "maxspeedkmh":
                        return new MaxSpeedFunction(SpeedUnit.KMH);
                case "maxspeedmph":
                        return new MaxSpeedFunction(SpeedUnit.MPH);
                case "type":
                        return new TypeFunction();
                case "osmid":
                        return new OsmIdFunction();
                case "is_in":
                        return new IsInFunction();
                case "is_drive_on_left":
                        return new IsDriveOnLeftFunction();
                default:
                        return null;
                }
        }
}