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/*
 * (C) 2007-2012 Alibaba Group Holding Limited.
 * 
 * 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.
 * Authors:
 *   wuhua  , boyan 
 */
package com.taobao.metamorphosis.utils;

import com.taobao.metamorphosis.Message;


/**
 * ??Ϣflag?????? flag??32λ?????????Ľṹ???£?


 * 
 * ??һλ??1??ʾ????Ϣ???ԣ?????û??
 * ??????ʱ????
 * 
 * 
 * @author boyan
 * @Date 2011-4-29
 * 
 */
public class MessageFlagUtils {

    public static int getFlag(final Message message) {
        int flag = 0;
        if (message != null && message.getAttribute() != null) {
            // ??һλ????Ϊ1
            flag = flag & 0xFFFFFFFE | 1;
        }
        return flag;
    }


    public static boolean hasAttribute(final int flag) {
        return (flag & 0x1) == 1;
    }

}