int64_t CopyOnWriteContext::handleStreamMore(TupleOutputStreamProcessor &outputStreams,
std::vector<int> &retPositions) {
int64_t remaining = serializeMore(outputStreams);
// If more was streamed copy current positions for return.
// Can this copy be avoided?
for (size_t i = 0; i < outputStreams.size(); i++) {
retPositions.push_back((int)outputStreams.at(i).position());
}
return remaining;
}
/**
* Mandatory TableStreamContext override.
*/
int64_t RecoveryContext::handleStreamMore(TupleOutputStreamProcessor &outputStreams,
std::vector<int> &retPositions) {
if (outputStreams.size() != 1) {
throwFatalException("RecoveryContext::handleStreamMore: Expect 1 output stream "
"for recovery, received %ld", outputStreams.size());
}
/*
* Table ids don't change during recovery because
* catalog changes are not allowed.
*/
bool hasMore = nextMessage(&outputStreams[0]);
// Non-zero if some tuples remain, we're just not sure how many.
int64_t remaining = (hasMore ? 1 : 0);
for (size_t i = 0; i < outputStreams.size(); i++) {
retPositions.push_back((int)outputStreams.at(i).position());
}
return remaining;
}