/**
* Insert rows while we keep getting duplicates from the merge run whose scan is in the open scan
* array entry indexed by scanindex.
*/
void mergeARow(int scanindex) throws StandardException {
if (SanityManager.DEBUG) {
// Unless there's a bug, the scan index will refer
// to an open scan. That's because we never put
// a scan index for a closed scan into the sort
// buffer (via setNextAux).
SanityManager.ASSERT(openScans[scanindex] != null);
}
DataValueDescriptor[] row;
// Read rows from the merge run and stuff them into the
// sort buffer for as long as we encounter duplicates.
do {
row = sortObserver.getArrayClone();
// Fetch the row from the merge run.
if (!openScans[scanindex].fetchNext(row)) {
// If we're out of rows in the merge run, close the scan.
openScans[scanindex].close();
openScans[scanindex] = null;
return;
}
// Save the index of this merge run with
// the row we're putting in the sort buffer.
sortBuffer.setNextAux(scanindex);
} while (sortBuffer.insert(row) == SortBuffer.INSERT_DUPLICATE);
}
