com.alibaba.rocketmq.common.sysflag.MessageSysFlag Maven / Gradle / Ivy
/**
* Copyright (C) 2010-2013 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.
*/
package com.alibaba.rocketmq.common.sysflag;
/**
* @author shijia.wxr
*/
public class MessageSysFlag {
/**
* SysFlag
*/
public final static int CompressedFlag = (0x1 << 0);
public final static int MultiTagsFlag = (0x1 << 1);
/**
* 7 6 5 4 3 2 1 0
* SysFlag 事务相关，从左属，2与3
*/
public final static int TransactionNotType = (0x0 << 2);
public final static int TransactionPreparedType = (0x1 << 2);
public final static int TransactionCommitType = (0x2 << 2);
public final static int TransactionRollbackType = (0x3 << 2);
public static int getTransactionValue(final int flag) {
return flag & TransactionRollbackType;
}
public static int resetTransactionValue(final int flag, final int type) {
return (flag & (~TransactionRollbackType)) | type;
}
public static int clearCompressedFlag(final int flag) {
return flag & (~CompressedFlag);
}
}