QueryBitSetProducer

java.lang.Object
- org.apache.lucene.search.join.QueryBitSetProducer

All Implemented Interfaces:

BitSetProducer
```
public class QueryBitSetProducer
extends java.lang.Object
implements BitSetProducer
```
A BitSetProducer that wraps a query and caches matching BitSets per segment.

Field Summary

Fields
Modifier and Type Field Description

(package private) java.util.Map<IndexReader.CacheKey,DocIdSet> cache

private Query query

Constructor Summary

Constructors
Constructor Description

QueryBitSetProducer(Query query)
Wraps another query's result and caches it into bitsets.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object o)`
`BitSet`	`getBitSet(LeafReaderContext context)`	Produce a `BitSet` matching the expected documents on the given segment.
`Query`	`getQuery()`	Gets the contained query.
`int`	`hashCode()`
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - query
```
private final Query query
```
  - cache
```
final java.util.Map<IndexReader.CacheKey,DocIdSet> cache
```
- Constructor Detail
  - QueryBitSetProducer
```
public QueryBitSetProducer(Query query)
```
    Wraps another query's result and caches it into bitsets.
    
    Parameters:
    
    query - Query to cache results of
- Method Detail
  - getQuery
```
public Query getQuery()
```
    Gets the contained query.
    
    Returns:
    
    the contained query.
  - getBitSet
```
public BitSet getBitSet(LeafReaderContext context)
                 throws java.io.IOException
```
    Description copied from interface: BitSetProducer
    
    Produce a BitSet matching the expected documents on the given segment. This may return null if no documents match.
    
    Specified by:
    
    getBitSet in interface BitSetProducer
    
    Throws:
    
    java.io.IOException
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object