Package org.apache.lucene.search.join

# Interface BitSetProducer

All Known Implementing Classes:
  `QueryBitSetProducer`

public interface BitSetProducer
A producer of `BitSet`s per segment.

## Method Summary

Modifier and Type
Method
Description
`BitSet`
`getBitSet(LeafReaderContext context)`
Produce a `BitSet` matching the expected documents on the given segment.

## Method Details

### getBitSet

BitSet getBitSet(LeafReaderContext context) throws IOException
Produce a `BitSet` matching the expected documents on the given segment. This may return `null` if no documents match.

Throws:
  `IOException`