public override System.Collections.BitArray Bits(IndexReader reader)
{
object coreKey = reader.GetFieldCacheKey();
object delCoreKey = reader.HasDeletions() ? reader.GetDeletesCacheKey() : coreKey;
object cached = cache.Get(reader, coreKey, delCoreKey);
if (cached != null)
{
if (cached is System.Collections.BitArray)
{
return((System.Collections.BitArray)cached);
}
else if (cached is DocIdBitSet)
{
return(((DocIdBitSet)cached).GetBitSet());
}
// It would be nice to handle the DocIdSet case, but that's not really possible
}
System.Collections.BitArray bits = filter.Bits(reader);
if (bits != null)
{
cache.Put(coreKey, delCoreKey, bits);
}
return(bits);
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
object coreKey = reader.GetFieldCacheKey();
object delCoreKey = reader.HasDeletions() ? reader.GetDeletesCacheKey() : coreKey;
DocIdSet docIdSet = cache.Get(reader, coreKey, delCoreKey);
if (docIdSet != null)
{
hitCount++;
return(docIdSet);
}
missCount++;
// cache miss
docIdSet = DocIdSetToCache(filter.GetDocIdSet(reader), reader);
if (docIdSet != null)
{
cache.Put(coreKey, delCoreKey, docIdSet);
}
return(docIdSet);
}