mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 04:53:01 +01:00
150 lines
3.6 KiB
C++
150 lines
3.6 KiB
C++
/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef NdbReceiver_H
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#define NdbReceiver_H
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#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL // Not part of public interface
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#include <ndb_types.h>
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class Ndb;
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class NdbTransaction;
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class NdbReceiver
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{
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friend class Ndb;
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friend class NdbOperation;
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friend class NdbScanOperation;
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friend class NdbIndexOperation;
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friend class NdbIndexScanOperation;
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friend class NdbTransaction;
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public:
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enum ReceiverType { NDB_UNINITIALIZED,
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NDB_OPERATION = 1,
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NDB_SCANRECEIVER = 2,
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NDB_INDEX_OPERATION = 3
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};
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NdbReceiver(Ndb *aNdb);
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void init(ReceiverType type, void* owner);
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void release();
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~NdbReceiver();
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Uint32 getId(){
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return m_id;
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}
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ReceiverType getType(){
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return m_type;
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}
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inline NdbTransaction * getTransaction();
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void* getOwner(){
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return m_owner;
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}
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bool checkMagicNumber() const;
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inline void next(NdbReceiver* next) { m_next = next;}
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inline NdbReceiver* next() { return m_next; }
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void setErrorCode(int);
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private:
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Uint32 theMagicNumber;
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Ndb* m_ndb;
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Uint32 m_id;
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Uint32 m_tcPtrI;
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Uint32 m_hidden_count;
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ReceiverType m_type;
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void* m_owner;
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NdbReceiver* m_next;
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/**
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* At setup
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*/
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class NdbRecAttr * getValue(const class NdbColumnImpl*, char * user_dst_ptr);
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void do_get_value(NdbReceiver*, Uint32 rows, Uint32 key_size, Uint32 range);
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void prepareSend();
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void calculate_batch_size(Uint32, Uint32, Uint32&, Uint32&, Uint32&);
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int execKEYINFO20(Uint32 info, const Uint32* ptr, Uint32 len);
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int execTRANSID_AI(const Uint32* ptr, Uint32 len);
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int execTCOPCONF(Uint32 len);
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int execSCANOPCONF(Uint32 tcPtrI, Uint32 len, Uint32 rows);
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class NdbRecAttr* theFirstRecAttr;
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class NdbRecAttr* theCurrentRecAttr;
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class NdbRecAttr** m_rows;
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Uint32 m_list_index; // When using multiple
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Uint32 m_current_row;
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Uint32 m_result_rows;
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Uint32 m_defined_rows;
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Uint32 m_expected_result_length;
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Uint32 m_received_result_length;
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bool nextResult() const { return m_current_row < m_result_rows; }
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NdbRecAttr* copyout(NdbReceiver&);
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};
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#ifdef NDB_NO_DROPPED_SIGNAL
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#include <stdlib.h>
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#endif
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inline
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bool
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NdbReceiver::checkMagicNumber() const {
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bool retVal = (theMagicNumber == 0x11223344);
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#ifdef NDB_NO_DROPPED_SIGNAL
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if(!retVal){
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abort();
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}
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#endif
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return retVal;
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}
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inline
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void
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NdbReceiver::prepareSend(){
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m_current_row = 0;
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m_received_result_length = 0;
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m_expected_result_length = 0;
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theCurrentRecAttr = theFirstRecAttr;
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}
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inline
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int
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NdbReceiver::execTCOPCONF(Uint32 len){
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Uint32 tmp = m_received_result_length;
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m_expected_result_length = len;
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#ifdef assert
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assert(!(tmp && !len));
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#endif
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return ((bool)len ^ (bool)tmp ? 0 : 1);
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}
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inline
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int
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NdbReceiver::execSCANOPCONF(Uint32 tcPtrI, Uint32 len, Uint32 rows){
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m_tcPtrI = tcPtrI;
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m_result_rows = rows;
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Uint32 tmp = m_received_result_length;
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m_expected_result_length = len;
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return (tmp == len ? 1 : 0);
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}
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#endif // DOXYGEN_SHOULD_SKIP_INTERNAL
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#endif
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