NextScan.hpp
上传用户:romrleung
上传日期:2022-05-23
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文件大小:2k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef NEXT_SCAN_HPP
- #define NEXT_SCAN_HPP
- #include "SignalData.hpp"
- class NextScanReq {
- friend class Dblqh;
- friend class Dbacc;
- friend class Dbtux;
- public:
- // two sets of defs picked from lqh/acc
- enum ScanFlag {
- ZSCAN_NEXT = 1,
- ZSCAN_NEXT_COMMIT = 2,
- ZSCAN_COMMIT = 3, // new
- ZSCAN_CLOSE = 6,
- ZSCAN_NEXT_ABORT = 12
- };
- enum CopyFlag {
- todo_ZCOPY_NEXT = 1,
- todo_ZCOPY_NEXT_COMMIT = 2,
- todo_ZCOPY_COMMIT = 3,
- todo_ZCOPY_REPEAT = 4,
- todo_ZCOPY_ABORT = 5,
- todo_ZCOPY_CLOSE = 6
- };
- STATIC_CONST( SignalLength = 3 );
- private:
- Uint32 accPtr; // scan record in ACC/TUX
- Uint32 accOperationPtr;
- Uint32 scanFlag;
- };
- class NextScanConf {
- friend class Dbacc;
- friend class Dbtux;
- friend class Dblqh;
- public:
- // length is less if no keyinfo or no next result
- STATIC_CONST( SignalLength = 11 );
- private:
- Uint32 scanPtr; // scan record in LQH
- Uint32 accOperationPtr;
- Uint32 fragId;
- Uint32 localKey[2];
- Uint32 localKeyLength;
- Uint32 keyLength;
- Uint32 key[4];
- };
- #endif