com.thoughtworks.xstream.converters.extended.UseAttributeForEnumMapper Maven / Gradle / Ivy

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/*
 * Copyright (C) 2013 XStream Committers.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 * 
 * Created on 25. September 2013 by Joerg Schaible
 */
package com.thoughtworks.xstream.converters.extended;

import com.thoughtworks.xstream.converters.SingleValueConverter;
import com.thoughtworks.xstream.core.util.DependencyInjectionFactory;
import com.thoughtworks.xstream.mapper.AttributeMapper;
import com.thoughtworks.xstream.mapper.DefaultMapper;
import com.thoughtworks.xstream.mapper.Mapper;

class UseAttributeForEnumMapper extends AttributeMapper {

    public UseAttributeForEnumMapper(Mapper wrapped) {
        super(wrapped, null, null);
    }

    /**
     * @deprecated only used for Java 1.4 support 
     */
    public static boolean isEnum(Class type) {
        while(type != null && type != Object.class) {
            if (type.getName().equals("java.lang.Enum")) {
                return true;
            }
            type = type.getSuperclass();
        }
        return false;
    }

    public boolean shouldLookForSingleValueConverter(String fieldName, Class type,
        Class definedIn) {
        return isEnum(type);
    }

    public SingleValueConverter getConverterFromItemType(String fieldName, Class type,
        Class definedIn) {
        return null;
    }

    public SingleValueConverter getConverterFromAttribute(Class definedIn,
        String attribute, Class type) {
        return null;
    }

    static Mapper createEnumMapper(final Mapper mapper) {
        try {
            Class enumMapperClass = Class.forName(
                "com.thoughtworks.xstream.mapper.EnumMapper", true,
                Mapper.class.getClassLoader());
            return (Mapper)DependencyInjectionFactory.newInstance(
                enumMapperClass,
                new Object[]{new UseAttributeForEnumMapper(mapper
                    .lookupMapperOfType(DefaultMapper.class))});
        } catch (Exception e) {
            return null;
        }
    }
}