const void *getResult(const void *firstRow)
{
IHThorAggregateArg *helper = (IHThorAggregateArg *)baseHelper.get();
unsigned numPartialResults = container.queryJob().querySlaves();
if (1 == numPartialResults)
return firstRow;
CThorExpandingRowArray partialResults(*this, this, true, stableSort_none, true, numPartialResults);
if (hadElement)
partialResults.setRow(0, firstRow);
--numPartialResults;
size32_t sz;
while (numPartialResults--)
{
CMessageBuffer msg;
rank_t sender;
if (!receiveMsg(msg, RANK_ALL, mpTag, &sender))
return NULL;
if (abortSoon)
return NULL;
msg.read(sz);
if (sz)
{
assertex(NULL == partialResults.query(sender-1));
CThorStreamDeserializerSource mds(sz, msg.readDirect(sz));
RtlDynamicRowBuilder rowBuilder(queryRowAllocator());
size32_t sz = queryRowDeserializer()->deserialize(rowBuilder, mds);
partialResults.setRow(sender-1, rowBuilder.finalizeRowClear(sz));
}
}
RtlDynamicRowBuilder rowBuilder(queryRowAllocator(), false);
bool first = true;
numPartialResults = container.queryJob().querySlaves();
unsigned p=0;
for (;p<numPartialResults; p++)
{
const void *row = partialResults.query(p);
if (row)
{
if (first)
{
first = false;
sz = cloneRow(rowBuilder, row, queryRowMetaData());
}
else
sz = helper->mergeAggregate(rowBuilder, row);
}
}
if (first)
sz = helper->clearAggregate(rowBuilder);
return rowBuilder.finalizeRowClear(sz);
}
const void * getResult()
{
CMessageBuffer mb;
if (receiveMsg(mb, 0, mpTag)) {
size32_t sz;
mb.read(sz);
if (sz) {
CThorStreamDeserializerSource ds(sz,mb.readDirect(sz));
RtlDynamicRowBuilder rowBuilder(queryRowAllocator());
size32_t sz = queryRowDeserializer()->deserialize(rowBuilder,ds);
return rowBuilder.finalizeRowClear(sz);
}
}
return NULL;
}
CATCH_NEXTROW()
{
ActivityTimer t(totalCycles, timeActivities, NULL);
if (abortSoon || rowSource.eos())
return NULL;
if (eogPending)
{
eogPending = false;
return NULL;
}
RtlDynamicRowBuilder rowBuilder(queryRowAllocator());
size32_t sz = queryRowDeserializer()->deserialize(rowBuilder,rowSource);
if (grouped)
rowSource.read(sizeof(bool), &eogPending);
dataLinkIncrement();
return rowBuilder.finalizeRowClear(sz);
}