Module org.apache.lucene.join

Package org.apache.lucene.search.join

Class ToChildBlockJoinQuery.ToChildBlockJoinWeight

java.lang.Object

org.apache.lucene.search.Weight

org.apache.lucene.search.FilterWeight

org.apache.lucene.search.join.ToChildBlockJoinQuery.ToChildBlockJoinWeight

All Implemented Interfaces:

SegmentCacheable

Enclosing class:

ToChildBlockJoinQuery

private static class ToChildBlockJoinQuery.ToChildBlockJoinWeight
extends FilterWeight

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.Weight

Weight.DefaultBulkScorer, Weight.DefaultScorerSupplier

Field Summary

Fields

Modifier and Type	Field	Description
private final boolean	doScores
private final BitSetProducer	parentsFilter

Fields inherited from class org.apache.lucene.search.FilterWeight

in

Fields inherited from class org.apache.lucene.search.Weight

parentQuery

Constructor Summary

Constructors

Constructor	Description
ToChildBlockJoinWeight(Query joinQuery, Weight parentWeight, BitSetProducer parentsFilter, boolean doScores)

Method Summary

Modifier and Type	Method	Description
Explanation	explain(LeafReaderContext context, int doc)	An explanation of the score computation for the named document.
ScorerSupplier	scorerSupplier(LeafReaderContext readerContext)	Get a ScorerSupplier, which allows knowing the cost of the Scorer before building it.

Methods inherited from class org.apache.lucene.search.FilterWeight

isCacheable, matches

Methods inherited from class org.apache.lucene.search.Weight

bulkScorer, count, getQuery, scorer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

parentsFilter

private final BitSetProducer parentsFilter

doScores

private final boolean doScores

Constructor Details

ToChildBlockJoinWeight

public ToChildBlockJoinWeight(Query joinQuery,
 Weight parentWeight,
 BitSetProducer parentsFilter,
 boolean doScores)

Method Details

scorerSupplier

public ScorerSupplier scorerSupplier(LeafReaderContext readerContext)
                              throws IOException

Description copied from class: Weight

Get a ScorerSupplier, which allows knowing the cost of the Scorer before building it. A scorer supplier for the same LeafReaderContext instance may be requested multiple times as part of a single search call.

Note: It must return null if the scorer is null.

Overrides:

scorerSupplier in class FilterWeight

Parameters:

readerContext - the leaf reader context

Returns:

a ScorerSupplier providing the scorer, or null if scorer is null

Throws:

IOException - if an IOException occurs

See Also:

• Scorer
• Weight.DefaultScorerSupplier

explain

public Explanation explain(LeafReaderContext context,
 int doc)
                    throws IOException

Description copied from class: Weight

An explanation of the score computation for the named document.

Overrides:

explain in class FilterWeight

Parameters:

context - the readers context to create the Explanation for.

doc - the document's id relative to the given context's reader

Returns:

an Explanation for the score

Throws:

IOException - if an IOException occurs