/**
* accumulates per-segment multi-valued facet counts, mapping to global ordinal space on-the-fly
*/
static void accumMultiGeneric(
int counts[],
int startTermIndex,
SortedSetDocValues si,
DocIdSetIterator disi,
int subIndex,
OrdinalMap map)
throws IOException {
final LongValues ordMap = map == null ? null : map.getGlobalOrds(subIndex);
int doc;
while ((doc = disi.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
si.setDocument(doc);
// strange do-while to collect the missing count (first ord is NO_MORE_ORDS)
int term = (int) si.nextOrd();
if (term < 0) {
if (startTermIndex == -1) {
counts[0]++; // missing count
}
continue;
}
do {
if (map != null) {
term = (int) ordMap.get(term);
}
int arrIdx = term - startTermIndex;
if (arrIdx >= 0 && arrIdx < counts.length) counts[arrIdx]++;
} while ((term = (int) si.nextOrd()) >= 0);
}
}
/** folds counts in segment ordinal space (segCounts) into global ordinal space (counts) */
static void migrateGlobal(int counts[], int segCounts[], int subIndex, OrdinalMap map) {
final LongValues ordMap = map.getGlobalOrds(subIndex);
// missing count
counts[0] += segCounts[0];
// migrate actual ordinals
for (int ord = 1; ord < segCounts.length; ord++) {
int count = segCounts[ord];
if (count != 0) {
counts[1 + (int) ordMap.get(ord - 1)] += count;
}
}
}
/**
* accumulates per-segment single-valued facet counts, mapping to global ordinal space on-the-fly
*/
static void accumSingleGeneric(
int counts[],
int startTermIndex,
SortedDocValues si,
DocIdSetIterator disi,
int subIndex,
OrdinalMap map)
throws IOException {
final LongValues ordmap = map == null ? null : map.getGlobalOrds(subIndex);
int doc;
while ((doc = disi.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
int term = si.getOrd(doc);
if (map != null && term >= 0) {
term = (int) ordmap.get(term);
}
int arrIdx = term - startTermIndex;
if (arrIdx >= 0 && arrIdx < counts.length) counts[arrIdx]++;
}
}