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/* 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; 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 Street, Fifth Floor, Boston, MA 02110-1301, USA */
#ifndef NdbReceiver_H
#define NdbReceiver_H
#ifndef DOXYGEN_SHOULD_SKIP_INTERNAL // Not part of public interface
#include <ndb_types.h>
class Ndb;
class NdbTransaction;
class NdbReceiver
{
friend class Ndb;
friend class NdbOperation;
friend class NdbScanOperation;
friend class NdbIndexOperation;
friend class NdbIndexScanOperation;
friend class NdbTransaction;
public:
enum ReceiverType { NDB_UNINITIALIZED,
NDB_OPERATION = 1,
NDB_SCANRECEIVER = 2,
NDB_INDEX_OPERATION = 3
};
NdbReceiver(Ndb *aNdb);
int init(ReceiverType type, void* owner);
void release();
~NdbReceiver();
Uint32 getId(){
return m_id;
}
ReceiverType getType(){
return m_type;
}
inline NdbTransaction * getTransaction();
void* getOwner(){
return m_owner;
}
bool checkMagicNumber() const;
inline void next(NdbReceiver* next_arg) { m_next = next_arg;}
inline NdbReceiver* next() { return m_next; }
void setErrorCode(int);
private:
Uint32 theMagicNumber;
Ndb* m_ndb;
Uint32 m_id;
Uint32 m_tcPtrI;
Uint32 m_hidden_count;
ReceiverType m_type;
void* m_owner;
NdbReceiver* m_next;
/**
* At setup
*/
class NdbRecAttr * getValue(const class NdbColumnImpl*, char * user_dst_ptr);
int do_get_value(NdbReceiver*, Uint32 rows, Uint32 key_size, Uint32 range);
void prepareSend();
void calculate_batch_size(Uint32, Uint32, Uint32&, Uint32&, Uint32&);
int execKEYINFO20(Uint32 info, const Uint32* ptr, Uint32 len);
int execTRANSID_AI(const Uint32* ptr, Uint32 len);
int execTCOPCONF(Uint32 len);
int execSCANOPCONF(Uint32 tcPtrI, Uint32 len, Uint32 rows);
class NdbRecAttr* theFirstRecAttr;
class NdbRecAttr* theCurrentRecAttr;
class NdbRecAttr** m_rows;
Uint32 m_list_index; // When using multiple
Uint32 m_current_row;
Uint32 m_result_rows;
Uint32 m_defined_rows;
Uint32 m_expected_result_length;
Uint32 m_received_result_length;
bool nextResult() const { return m_current_row < m_result_rows; }
NdbRecAttr* copyout(NdbReceiver&);
};
#ifdef NDB_NO_DROPPED_SIGNAL
#include <stdlib.h>
#endif
inline
bool
NdbReceiver::checkMagicNumber() const {
bool retVal = (theMagicNumber == 0x11223344);
#ifdef NDB_NO_DROPPED_SIGNAL
if(!retVal){
abort();
}
#endif
return retVal;
}
inline
void
NdbReceiver::prepareSend(){
m_current_row = 0;
m_received_result_length = 0;
m_expected_result_length = 0;
theCurrentRecAttr = theFirstRecAttr;
}
inline
int
NdbReceiver::execTCOPCONF(Uint32 len){
Uint32 tmp = m_received_result_length;
m_expected_result_length = len;
#ifdef assert
assert(!(tmp && !len));
#endif
return ((bool)len ^ (bool)tmp ? 0 : 1);
}
inline
int
NdbReceiver::execSCANOPCONF(Uint32 tcPtrI, Uint32 len, Uint32 rows){
m_tcPtrI = tcPtrI;
m_result_rows = rows;
Uint32 tmp = m_received_result_length;
m_expected_result_length = len;
return (tmp == len ? 1 : 0);
}
#endif // DOXYGEN_SHOULD_SKIP_INTERNAL
#endif
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