本文整理汇总了C++中NdbScanOperation::readTuplesExclusive方法的典型用法代码示例。如果您正苦于以下问题：C++ NdbScanOperation::readTuplesExclusive方法的具体用法？C++ NdbScanOperation::readTuplesExclusive怎么用？C++ NdbScanOperation::readTuplesExclusive使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NdbScanOperation的用法示例。
在下文中一共展示了NdbScanOperation::readTuplesExclusive方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: allocRows
int
HugoTransactions::indexUpdateRecords(Ndb* pNdb,
const char * idxName,
int records,
int batch){
int updated = 0;
int r = 0;
int retryAttempt = 0;
int check, a, b;
NdbOperation *pOp;
NdbScanOperation * sOp;
const NdbDictionary::Index* pIndex
= pNdb->getDictionary()->getIndex(idxName, tab.getName());
const bool ordered = (pIndex->getType()==NdbDictionary::Index::OrderedIndex);
if (ordered){
batch = 1;
}
allocRows(batch);
while (r < records){
if (retryAttempt >= m_retryMax){
g_info << "ERROR: has retried this operation " << retryAttempt
<< " times, failing!" << endl;
return NDBT_FAILED;
}
pTrans = pNdb->startTransaction();
if (pTrans == NULL) {
const NdbError err = pNdb->getNdbError();
if (err.status == NdbError::TemporaryError){
ERR(err);
NdbSleep_MilliSleep(50);
retryAttempt++;
continue;
}
ERR(err);
return NDBT_FAILED;
}
for(b = 0; b<batch && (b+r)<records; b++){
if(!ordered){
pOp = pTrans->getNdbIndexOperation(idxName, tab.getName());
if (pOp == NULL) {
ERR(pTrans->getNdbError());
closeTransaction(pNdb);
return NDBT_FAILED;
}
check = pOp->readTupleExclusive();
if( check == -1 ) {
ERR(pTrans->getNdbError());
closeTransaction(pNdb);
return NDBT_FAILED;
}
} else {
pOp = sOp = pTrans->getNdbIndexScanOperation(idxName, tab.getName());
if (pOp == NULL) {
ERR(pTrans->getNdbError());
closeTransaction(pNdb);
return NDBT_FAILED;
}
check = 0;
sOp->readTuplesExclusive();
}
// Define primary keys
if (equalForRow(pOp, r+b) != 0)
{
closeTransaction(pNdb);
return NDBT_FAILED;
}
// Define attributes to read
for(a = 0; a<tab.getNoOfColumns(); a++){
if((rows[b]->attributeStore(a) =
pOp->getValue(tab.getColumn(a)->getName())) == 0) {
ERR(pTrans->getNdbError());
closeTransaction(pNdb);
return NDBT_FAILED;
}
}
}
check = pTrans->execute(NoCommit, AbortOnError);
check = (check == -1 ? -1 : !ordered ? check : sOp->nextResult(true));
if( check == -1 ) {
const NdbError err = pTrans->getNdbError();
ERR(err);
closeTransaction(pNdb);
if (err.status == NdbError::TemporaryError){
NdbSleep_MilliSleep(50);
retryAttempt++;
continue;
//.........这里部分代码省略.........