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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; 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 */
#include "NdbScanReceiver.hpp"
#include <NdbRecAttr.hpp>
#include <signaldata/ScanFrag.hpp>
#include <NdbOut.hpp>
/***************************************************************************
* int receiveKEYINFO20( NdbApiSignal* aSignal)
*
* Remark: Handles the reception of the KEYINFO20 signal.
* Save a copy of the signal in list
*
***************************************************************************/
int
NdbScanReceiver::receiveKEYINFO20( NdbApiSignal* aSignal){
const KeyInfo20 * const keyInfo = CAST_CONSTPTR(KeyInfo20, aSignal->getDataPtr());
if (theStatus != Waiting){
//ndbout << "Dropping KEYINFO20, theStatus="<<theStatus << endl;
return -1;
}
if (aSignal->getLength() < 5){
//ndbout << "Dropping KEYINFO20, length="<<aSignal->getLength() << endl;
}
Uint64 tCurrTransId = theNdbOp->theNdbCon->getTransactionId();
Uint64 tRecTransId = (Uint64)keyInfo->transId1 + ((Uint64)keyInfo->transId2 << 32);
if ((tRecTransId - tCurrTransId) != (Uint64)0){
//ndbout << "Dropping KEYINFO20 wrong transid" << endl;
return -1;
}
NdbApiSignal * tCopy = new NdbApiSignal(0);//getSignal();
if (tCopy == NULL) {
theNdbOp->setErrorCode(4000);
return 2; // theWaitState = NO_WAIT
}
// Put copy last in list of KEYINFO20 signals
tCopy->copyFrom(aSignal);
tCopy->next(NULL);
if (theFirstKEYINFO20_Recv == NULL)
theFirstKEYINFO20_Recv = tCopy;
else
theLastKEYINFO20_Recv->next(tCopy);
theLastKEYINFO20_Recv = tCopy;
theTotalKI_Len = keyInfo->keyLen; // This is the total length of all signals
theTotalRecKI_Len += aSignal->getLength() - 5;
return theNdbOp->theNdbCon->checkNextScanResultComplete();
}
/***************************************************************************
* int receiveTRANSID_AI_SCAN( NdbApiSignal* aSignal)
*
* Remark: Handles the reception of the TRANSID_AI_signal with
* 22 signal data words.
* Save a copy of the signal in list and check if all
* signals belonging to this resultset is receieved.
*
***************************************************************************/
int
NdbScanReceiver::receiveTRANSID_AI_SCAN( NdbApiSignal* aSignal)
{
const Uint32* aDataPtr = aSignal->getDataPtr();
if (theStatus != Waiting){
//ndbout << "Dropping TRANSID_AI, theStatus="<<theStatus << endl;
return -1;
}
if (aSignal->getLength() < 3){
//ndbout << "Dropping TRANSID_AI, length="<<aSignal->getLength() << endl;
return -1;
}
if (theNdbOp == NULL){
//ndbout << "Dropping TRANSID_AI, theNdbOp == NULL" << endl;
return -1;
}
if (theNdbOp->theNdbCon == NULL){
//ndbout << "Dropping TRANSID_AI, theNdbOp->theNdbCon == NULL" << endl;
return -1;
}
Uint64 tCurrTransId = theNdbOp->theNdbCon->getTransactionId();
Uint64 tRecTransId = (Uint64)aDataPtr[1] + ((Uint64)aDataPtr[2] << 32);
if ((tRecTransId - tCurrTransId) != (Uint64)0){
//ndbout << "Dropping TRANSID_AI wrong transid" << endl;
return -1;
}
NdbApiSignal * tCopy = new NdbApiSignal(0);//getSignal();
if (tCopy == NULL){
theNdbOp->setErrorCode(4000);
return 2; // theWaitState = NO_WAIT
}
tCopy->copyFrom(aSignal);
tCopy->next(NULL);
if (theFirstTRANSID_AI_Recv == NULL)
theFirstTRANSID_AI_Recv = tCopy;
else
theLastTRANSID_AI_Recv->next(tCopy);
theLastTRANSID_AI_Recv = tCopy;
theTotalRecAI_Len += aSignal->getLength() - 3;
return theNdbOp->theNdbCon->checkNextScanResultComplete();
}
/***************************************************************************
* int executeSavedSignals()
*
* Remark: Execute all saved TRANSID_AI signals into the parent NdbOperation
*
*
***************************************************************************/
int
NdbScanReceiver::executeSavedSignals(){
NdbApiSignal* tSignal = theFirstTRANSID_AI_Recv;
while (tSignal != NULL) {
const Uint32* tDataPtr = tSignal->getDataPtr();
int tRet = theNdbOp->receiveREAD_AI((Uint32*)&tDataPtr[3],
tSignal->getLength() - 3);
if (tRet != -1){
// -1 means that more signals are wanted ?
// Make sure there are no more signals in the list
assert(tSignal->next() == NULL);
}
tSignal = tSignal->next();
}
// receiveREAD_AI may not copy to application buffers
NdbRecAttr* tRecAttr = theNdbOp->theFirstRecAttr;
while (tRecAttr != NULL) {
if (tRecAttr->copyoutRequired()) // copy to application buffer
tRecAttr->copyout();
tRecAttr = tRecAttr->next();
}
// Release TRANSID_AI signals for this receiver
while(theFirstTRANSID_AI_Recv != NULL){
NdbApiSignal* tmp = theFirstTRANSID_AI_Recv;
theFirstTRANSID_AI_Recv = tmp->next();
delete tmp;
}
// theNdbOp->theNdb->releaseSignalsInList(&theFirstTRANSID_AI_Recv);
theFirstTRANSID_AI_Recv = NULL;
theLastTRANSID_AI_Recv = NULL;
theStatus = Executed;
return 0;
}
void
NdbScanReceiver::prepareNextScanResult(){
if(theStatus == Executed){
// theNdbOp->theNdb->releaseSignalsInList(&theFirstKEYINFO20_Recv);
while(theFirstKEYINFO20_Recv != NULL){
NdbApiSignal* tmp = theFirstKEYINFO20_Recv;
theFirstKEYINFO20_Recv = tmp->next();
delete tmp;
}
theFirstKEYINFO20_Recv = NULL;
theLastKEYINFO20_Recv = NULL;
theTotalRecAI_Len = 0;
theTotalRecKI_Len = 0;
if (theLockMode == true)
theTotalKI_Len = 0xFFFFFFFF;
else
theTotalKI_Len = 0;
theStatus = Waiting;
}
}
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