private FixedBitSet InitialResult(AtomicReaderContext context, int logic, int[] index)
{
AtomicReader reader = context.AtomicReader;
FixedBitSet result = new FixedBitSet(reader.MaxDoc);
if (logic == AND)
{
result.Or(GetDISI(chain[index[0]], context));
++index[0];
}
else if (logic == ANDNOT)
{
result.Or(GetDISI(chain[index[0]], context));
result.Flip(0, reader.MaxDoc); // NOTE: may set bits for deleted docs.
++index[0];
}
return(result);
}
public DocumentFilteredAtomicIndexReader(AtomicReaderContext context, Filter preserveFilter, bool negateFilter)
: base(context.AtomicReader)
{
int maxDoc = m_input.MaxDoc;
FixedBitSet bits = new FixedBitSet(maxDoc);
// ignore livedocs here, as we filter them later:
DocIdSet docs = preserveFilter.GetDocIdSet(context, null);
if (docs != null)
{
DocIdSetIterator it = docs.GetIterator();
if (it != null)
{
bits.Or(it);
}
}
if (negateFilter)
{
bits.Flip(0, maxDoc);
}
if (m_input.HasDeletions)
{
IBits oldLiveDocs = m_input.LiveDocs;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(oldLiveDocs != null);
}
DocIdSetIterator it = bits.GetIterator();
for (int i = it.NextDoc(); i < maxDoc; i = it.NextDoc())
{
if (!oldLiveDocs.Get(i))
{
// we can safely modify the current bit, as the iterator already stepped over it:
bits.Clear(i);
}
}
}
this.liveDocs = bits;
this.numDocs = bits.Cardinality();
}
