/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2012, Open Source Geospatial Foundation (OSGeo)
* (C) 2008-2012 TOPP - www.openplans.org.
*
* 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 org.geotools.factory.Hints;
import org.geotools.util.Converter;
import org.geotools.util.ConverterFactory;
/**
* Converts between enumerations and strings
*
* @author Andrea Aime - OpenGeo
*/
public class EnumerationConverterFactory implements ConverterFactory {
public Converter createConverter(Class<?> source, Class<?> target, Hints hints) {
if ((String.class.equals(source) && target.isEnum())
|| (source.isEnum() && String.class.equals(source))) {
return new EnumConverter();
} else {
return null;
}
}
private static class EnumConverter implements Converter {
public <T> T convert(Object source, Class<T> target) throws Exception {
if (source instanceof String && target.isEnum()) {
return (T) Enum.valueOf((Class<Enum>) target, (String) source);
} else if (source.getClass().isEnum() && String.class.equals(target)) {
return (T) ((Enum) source).name();
} else {
return null;
}
}
}
}