org.apache.lucene.search.join

Class 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 and Description
(package private) java.util.Map<IndexReader.CacheKey,DocIdSet>	cache
private Query	query

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and 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