synchronized DocIdSet get(Query key, LeafReaderContext context) {
assert key instanceof BoostQuery == false;
assert key instanceof ConstantScoreQuery == false;
final Object readerKey = context.reader().getCoreCacheKey();
final LeafCache leafCache = cache.get(readerKey);
if (leafCache == null) {
onMiss(readerKey, key);
return null;
}
// this get call moves the query to the most-recently-used position
final Query singleton = uniqueQueries.get(key);
if (singleton == null) {
onMiss(readerKey, key);
return null;
}
final DocIdSet cached = leafCache.get(singleton);
if (cached == null) {
onMiss(readerKey, singleton);
} else {
onHit(readerKey, singleton);
}
return cached;
}
