virtual void start() override
{
ActivityTimer s(totalCycles, timeActivities);
PARENT::start();
__uint64 numRows = helper->numRows();
// local when generated from a child query (the range is per node, don't split)
bool isLocal = container.queryLocalData() || container.queryOwner().isLocalChild();
if (!isLocal && ((helper->getFlags() & TTFdistributed) != 0))
{
__uint64 nodes = queryCodeContext()->getNodes();
__uint64 nodeid = queryCodeContext()->getNodeNum();
startRow = (nodeid * numRows) / nodes;
maxRow = ((nodeid + 1) * numRows) / nodes;
ActPrintLog("InlineSLAVE: numRows = %" I64F "d, nodes = %" I64F
"d, nodeid = %" I64F "d, start = %" I64F "d, max = %" I64F "d",
numRows, nodes, nodeid, startRow, maxRow);
}
else
{
startRow = 0;
// when not distributed, only first node compute, unless local
if (firstNode() || isLocal)
maxRow = numRows;
else
maxRow = 0;
}
currentRow = startRow;
}
virtual void getMetaInfo(ThorDataLinkMetaInfo &info) override
{
initMetaInfo(info);
info.isSource = true;
info.unknownRowsOutput = false;
info.totalRowsMin = info.totalRowsMax = maxRow - startRow;
if (helper->getFlags() & TTFfiltered)
info.totalRowsMin = 0;
}
CATCH_NEXTROW()
{
ActivityTimer t(totalCycles, timeActivities);
if (abortSoon)
return NULL;
while (currentRow < maxRow) {
RtlDynamicRowBuilder row(queryRowAllocator());
size32_t sizeGot = helper->getRow(row, currentRow++);
if (sizeGot)
{
dataLinkIncrement();
return row.finalizeRowClear(sizeGot);
}
}
return NULL;
}
