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

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	doScores
private 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 and Description
ToChildBlockJoinWeight(Query joinQuery, Weight parentWeight, BitSetProducer parentsFilter, boolean doScores)

Method Summary

Modifier and Type	Method and Description
Explanation	explain(LeafReaderContext context, int doc) An explanation of the score computation for the named document.
Scorer	scorer(LeafReaderContext readerContext) Returns a Scorer which can iterate in order over all matching documents and assign them a score.

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

extractTerms, isCacheable, matches

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

bulkScorer, getQuery, scorerSupplier

Methods inherited from class java.lang.Object

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

Field Detail

parentsFilter

private final BitSetProducer parentsFilter

doScores

private final boolean doScores

Constructor Detail

ToChildBlockJoinWeight

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

Method Detail

scorer

public Scorer scorer(LeafReaderContext readerContext)
              throws java.io.IOException

Description copied from class: Weight

Returns a Scorer which can iterate in order over all matching documents and assign them a score.

NOTE: null can be returned if no documents will be scored by this query.

NOTE: The returned Scorer does not have LeafReader.getLiveDocs() applied, they need to be checked on top.

Overrides:

scorer in class FilterWeight

Parameters:

readerContext - the LeafReaderContext for which to return the Scorer.

Returns:

a Scorer which scores documents in/out-of order.

Throws:

java.io.IOException - if there is a low-level I/O error

explain

public Explanation explain(LeafReaderContext context,
                           int doc)
                    throws java.io.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:

java.io.IOException - if an IOException occurs