org.apache.lucene.search.spans

Class SpanNearQuery.SpanNearWeight

java.lang.Object

org.apache.lucene.search.Weight

org.apache.lucene.search.spans.SpanWeight

org.apache.lucene.search.spans.SpanNearQuery.SpanNearWeight

All Implemented Interfaces:

SegmentCacheable

Enclosing class:

SpanNearQuery

public class SpanNearQuery.SpanNearWeight
extends SpanWeight

Nested Class Summary

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

SpanWeight.Postings

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

Weight.DefaultBulkScorer, Weight.StartDISIWrapper

Field Summary

Fields inherited from class org.apache.lucene.search.spans.SpanWeight

field, similarity, simScorer

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

parentQuery

Constructor Summary

Constructors

Constructor and Description
SpanNearWeight(List<SpanWeight> subWeights, IndexSearcher searcher, Map<Term,TermStates> terms, float boost)

Method Summary

Modifier and Type	Method and Description
void	extractTerms(Set<Term> terms) Expert: adds all terms occurring in this query to the terms set.
void	extractTermStates(Map<Term,TermStates> contexts) Collect all TermStates used by this Weight
Spans	getSpans(LeafReaderContext context, SpanWeight.Postings requiredPostings) Expert: Return a Spans object iterating over matches from this Weight
boolean	isCacheable(LeafReaderContext ctx)

Methods inherited from class org.apache.lucene.search.spans.SpanWeight

explain, getSimScorer, matches, scorer

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

Constructor Detail

SpanNearWeight

public SpanNearWeight(List<SpanWeight> subWeights,
                      IndexSearcher searcher,
                      Map<Term,TermStates> terms,
                      float boost)
               throws IOException

Throws:

IOException

Method Detail

extractTermStates

public void extractTermStates(Map<Term,TermStates> contexts)

Description copied from class: SpanWeight

Collect all TermStates used by this Weight

Specified by:

extractTermStates in class SpanWeight

Parameters:

contexts - a map to add the TermStates to

getSpans

public Spans getSpans(LeafReaderContext context,
                      SpanWeight.Postings requiredPostings)
               throws IOException

Description copied from class: SpanWeight

Expert: Return a Spans object iterating over matches from this Weight

Specified by:

getSpans in class SpanWeight

Parameters:

context - a LeafReaderContext for this Spans

Returns:

a Spans

Throws:

IOException - on error

extractTerms

public void extractTerms(Set<Term> terms)

Description copied from class: Weight

Expert: adds all terms occurring in this query to the terms set. If the Weight was created with needsScores == true then this method will only extract terms which are used for scoring, otherwise it will extract all terms which are used for matching.

Specified by:

extractTerms in class Weight

isCacheable

public boolean isCacheable(LeafReaderContext ctx)

Returns:

true if the object can be cached against a given leaf