本文整理汇总了C++中ExpGenerator::generateSequenceExpression方法的典型用法代码示例。如果您正苦于以下问题：C++ ExpGenerator::generateSequenceExpression方法的具体用法？C++ ExpGenerator::generateSequenceExpression怎么用？C++ ExpGenerator::generateSequenceExpression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ExpGenerator的用法示例。
在下文中一共展示了ExpGenerator::generateSequenceExpression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: child
//.........这里部分代码省略.........
historyIds);
// Create the tuple descriptor for the history buffer row and
// assign the offsets to the attributes. For now, this layout is
// identical to the returned row. Set the tuple descriptors for
// the return and history rows.
//
ULng32 historyRecLen;
expGen->processAttributes(numberAttributes,
attrs,
ExpTupleDesc::SQLARK_EXPLODED_FORMAT,
historyRecLen,
historyAtp,
historyAtpIndex,
&historyDesc,
ExpTupleDesc::SHORT_FORMAT);
NADELETEBASIC(attrs, wHeap);
#pragma nowarn(1506) // warning elimination
returnCriDesc->setTupleDescriptor(historyAtpIndex, historyDesc);
#pragma warn(1506) // warning elimination
#pragma nowarn(1506) // warning elimination
historyCriDesc->setTupleDescriptor(historyAtpIndex, historyDesc);
#pragma warn(1506) // warning elimination
// If there are any sequence function items, generate the sequence
// function expressions.
//
ex_expr * readSeqExpr = NULL;
if(NOT readSeqFunctions().isEmpty())
{
ValueIdSet seqVals = readSeqFunctions();
seqVals += sequencedColumns();
seqVals += movePartIdsExpr();
expGen->generateSequenceExpression(seqVals,
readSeqExpr);
}
ex_expr *checkPartChangeExpr = NULL;
if (!checkPartitionChangeExpr().isEmpty()) {
ItemExpr * newCheckPartitionChangeTree=
checkPartitionChangeExpr().rebuildExprTree(ITM_AND,TRUE,TRUE);
expGen->generateExpr(newCheckPartitionChangeTree->getValueId(),
ex_expr::exp_SCAN_PRED,
&checkPartChangeExpr);
}
//unsigned long rowLength;
ex_expr * returnExpr = NULL;
if(NOT returnSeqFunctions().isEmpty())
{
expGen->generateSequenceExpression(returnSeqFunctions(),
returnExpr);
}
// Generate expression to evaluate predicate on the output
//
ex_expr *postPred = 0;
if (! selectionPred().isEmpty()) {
ItemExpr * newPredTree =
selectionPred().rebuildExprTree(ITM_AND,TRUE,TRUE);
expGen->generateExpr(newPredTree->getValueId(), ex_expr::exp_SCAN_PRED,
&postPred);