/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
package org.seasar.extension.dxo.converter.impl;
import org.seasar.extension.dxo.converter.ConversionContext;
/**
* 数値または文字列から列挙定数へ変換するコンバータです。
*
* @author koichik
*/
@SuppressWarnings("unchecked")
public class EnumConverter extends AbstractConverter {
public Class getDestClass() {
return Enum.class;
}
public Class[] getSourceClasses() {
return new Class[] { Object.class };
}
public Object convert(Object source, Class destClass,
ConversionContext context) {
if (source == null) {
return null;
}
if (source.getClass() == destClass) {
return source;
}
if (source instanceof Number) {
final int ordinal = Number.class.cast(source).intValue();
return destClass.getEnumConstants()[ordinal];
}
final String name = source.toString();
return Enum.valueOf(destClass, name);
}
}