UuidConverterFactory.java

/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2010, 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.util;

import java.util.UUID;
import org.geotools.factory.Hints;

/**
 * ConverterFactory for handling uuid (uniqueidentifier) conversions.
 * <p>
 * Supported conversions:
 * <ul>
 * <li>string -> UUID
 * <li>byte[] -> UUID
 * </ul>
 * </p>
 * 
 * @author Andrea Briganti <kbyte@ciotoni.net>
 * 
 */
public class UuidConverterFactory implements ConverterFactory {

    public Converter createConverter(Class source, Class target, Hints hints) {
        if (target.equals(UUID.class)) {

            // string to boolean
            if (source.equals(String.class)) {
                return new Converter() {

                    public Object convert(Object source, Class target) throws Exception {
                        return UUID.fromString((String) source);
                    }
                };
            }

            // integer to boolean
            if (source.equals(byte[].class)) {
                return new Converter() {

                    public Object convert(Object source, Class target) throws Exception {
                        return UUID.nameUUIDFromBytes((byte[]) source);
                    }

                };
            }

        }

        return null;
    }

}