NextScan.hpp

/*
   Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

   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; version 2 of the License.

   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef NEXT_SCAN_HPP
#define NEXT_SCAN_HPP

#include "SignalData.hpp"

class NextScanReq {
  friend class Dblqh;
  friend class Dbacc;
  friend class Dbtux;
  friend class Dbtup;
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
  };
  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 Dbtup;
  friend class Dblqh;
public:
  // length is less if no keyinfo or no next result
  STATIC_CONST( SignalLength = 11 );
  STATIC_CONST( SignalLengthNoKeyInfo = 6 );
private:
  Uint32 scanPtr;               // scan record in LQH
  Uint32 accOperationPtr;
  Uint32 fragId;
  Uint32 localKey[2];
  Uint32 gci;
};

class NextScanRef {
  friend class Dbtux;
  friend class Dblqh;
public:
  STATIC_CONST( SignalLength = 4 );
private:
  Uint32 scanPtr;
  Uint32 accOperationPtr;
  Uint32 fragId;
  Uint32 errorCode;
};

#endif