com.dianping.lion.util.EnumUtils.java Source code

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Here is the source code for com.dianping.lion.util.EnumUtils.java

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/**
 * Project: com.dianping.lion.lion-console-0.0.1
 * 
 * File Created at 2012-7-15
 * $Id$
 * 
 * Copyright 2010 dianping.com.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * Dianping Company. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with dianping.com.
 */
package com.dianping.lion.util;

import org.apache.commons.lang.ObjectUtils;

/**
 * @author danson.liu
 *
 */
public class EnumUtils {

    /**
     * ?property??
     * @param <T>
     * @param enumClass
     * @param property
     * @param propValue
     * @return
     */
    public static <T extends Enum<T>> T fromEnumProperty(Class<T> enumClass, String property, Object propValue) {
        T[] enumConstants = enumClass.getEnumConstants();
        for (T t : enumConstants) {
            Object constantPropValue;
            try {
                constantPropValue = BeanUtils.getDeclaredFieldValue(t, property);
                if (ObjectUtils.equals(constantPropValue, propValue)) {
                    return t;
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        return null;

    }

    /**
     * ????
     * @param <T>
     * @param enumClass
     * @param constantName
     * @return
     */
    public static <T extends Enum<T>> T fromEnumConstantName(Class<T> enumClass, String constantName) {
        T[] enumConstants = enumClass.getEnumConstants();
        for (T t : enumConstants) {
            if (((Enum<?>) t).name().equals(constantName)) {
                return t;
            }
        }
        return null;
    }

}