NdbConnectionScan.cpp
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上传日期:2022-05-23
资源大小:18897k
文件大小:4k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* 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 */
- /*****************************************************************************
- * Name: NdbConnectionScan.cpp
- * Include:
- * Link:
- * Author: UABRONM MikaelRonstr鰉 UAB/M/MT
- * QABJKAM Jonas Kamf UAB/M/MT
- * Date: 2000-06-12
- * Version: 0.1
- * Description: Interface between Application and NDB
- * Documentation:
- * Adjust: 2000-06-12 UABRONM First version.
- ****************************************************************************/
- #include <ndb_global.h>
- #include <Ndb.hpp>
- #include <NdbConnection.hpp>
- #include <NdbOperation.hpp>
- #include <NdbScanOperation.hpp>
- #include "NdbApiSignal.hpp"
- #include "TransporterFacade.hpp"
- #include "NdbUtil.hpp"
- #include "API.hpp"
- #include "NdbImpl.hpp"
- #include <signaldata/ScanTab.hpp>
- #include <NdbOut.hpp>
- /***************************************************************************
- * int receiveSCAN_TABREF(NdbApiSignal* aSignal)
- *
- * This means the scan could not be started, set status(s) to indicate
- * the failure
- *
- ****************************************************************************/
- int
- NdbConnection::receiveSCAN_TABREF(NdbApiSignal* aSignal){
- const ScanTabRef * ref = CAST_CONSTPTR(ScanTabRef, aSignal->getDataPtr());
- if(checkState_TransId(&ref->transId1)){
- theScanningOp->setErrorCode(ref->errorCode);
- theScanningOp->execCLOSE_SCAN_REP();
- if(!ref->closeNeeded){
- return 0;
- }
- /**
- * Setup so that close_impl will actually perform a close
- * and not "close scan"-optimze it away
- */
- theScanningOp->m_conf_receivers_count++;
- theScanningOp->m_conf_receivers[0] = theScanningOp->m_receivers[0];
- theScanningOp->m_conf_receivers[0]->m_tcPtrI = ~0;
- return 0;
- } else {
- #ifdef NDB_NO_DROPPED_SIGNAL
- abort();
- #endif
- }
- return -1;
- }
- /*****************************************************************************
- * int receiveSCAN_TABCONF(NdbApiSignal* aSignal)
- *
- * Receive SCAN_TABCONF
- * If scanStatus == 0 there is more records to read. Since signals may be
- * received in any order we have to go through the lists with saved signals
- * and check if all expected signals are there so that we can start to
- * execute them.
- *
- * If scanStatus > 0 this indicates that the scan is finished and there are
- * no more data to be read.
- *
- *****************************************************************************/
- int
- NdbConnection::receiveSCAN_TABCONF(NdbApiSignal* aSignal,
- const Uint32 * ops, Uint32 len)
- {
- const ScanTabConf * conf = CAST_CONSTPTR(ScanTabConf, aSignal->getDataPtr());
- if(checkState_TransId(&conf->transId1)){
- if (conf->requestInfo == ScanTabConf::EndOfData) {
- theScanningOp->execCLOSE_SCAN_REP();
- return 0;
- }
- for(Uint32 i = 0; i<len; i += 3){
- Uint32 opCount, totalLen;
- Uint32 ptrI = * ops++;
- Uint32 tcPtrI = * ops++;
- Uint32 info = * ops++;
- opCount = ScanTabConf::getRows(info);
- totalLen = ScanTabConf::getLength(info);
- void * tPtr = theNdb->int2void(ptrI);
- assert(tPtr); // For now
- NdbReceiver* tOp = theNdb->void2rec(tPtr);
- if (tOp && tOp->checkMagicNumber())
- {
- if (tcPtrI == RNIL && opCount == 0)
- theScanningOp->receiver_completed(tOp);
- else if (tOp->execSCANOPCONF(tcPtrI, totalLen, opCount))
- theScanningOp->receiver_delivered(tOp);
- }
- }
- return 0;
- } else {
- #ifdef NDB_NO_DROPPED_SIGNAL
- abort();
- #endif
- }
- return -1;
- }