java.lang.Object
org.apache.lucene.search.Scorable
org.apache.lucene.search.Scorer
org.apache.lucene.sandbox.search.CoveringScorer
A
Scorer
whose number of matches is per-document.-
Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.Scorable
Scorable.ChildScorable
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final DocIdSetIterator
(package private) final long
(package private) int
(package private) int
(package private) boolean
(package private) final int
(package private) long
(package private) final LongValues
(package private) final int
(package private) final DisiPriorityQueue
(package private) DisiWrapper
private final TwoPhaseIterator
-
Constructor Summary
ConstructorsConstructorDescriptionCoveringScorer
(Weight weight, Collection<Scorer> scorers, LongValues minMatchValues, int maxDoc) -
Method Summary
Modifier and TypeMethodDescriptionprivate void
advanceAll
(int target) int
docID()
Returns the doc ID that is currently being scored.final Collection
<Scorable.ChildScorable> Returns child sub-scorers positioned on the current documentfloat
getMaxScore
(int upTo) Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.iterator()
Return aDocIdSetIterator
over matching documents.float
score()
Returns the score of the current document matching the query.private void
private void
Optional method: Return aTwoPhaseIterator
view of thisScorer
.Methods inherited from class org.apache.lucene.search.Scorer
advanceShallow, getWeight
Methods inherited from class org.apache.lucene.search.Scorable
setMinCompetitiveScore, smoothingScore
-
Field Details
-
numScorers
final int numScorers -
maxDoc
final int maxDoc -
minMatchValues
-
matches
boolean matches -
doc
int doc -
topList
DisiWrapper topList -
freq
int freq -
minMatch
long minMatch -
subScorers
-
cost
final long cost -
approximation
-
twoPhase
-
-
Constructor Details
-
CoveringScorer
CoveringScorer(Weight weight, Collection<Scorer> scorers, LongValues minMatchValues, int maxDoc)
-
-
Method Details
-
getChildren
Description copied from class:Scorable
Returns child sub-scorers positioned on the current document- Overrides:
getChildren
in classScorable
- Throws:
IOException
-
iterator
Description copied from class:Scorer
Return aDocIdSetIterator
over matching documents.The returned iterator will either be positioned on
-1
if no documents have been scored yet,DocIdSetIterator.NO_MORE_DOCS
if all documents have been scored already, or the last document id that has been scored otherwise.The returned iterator is a view: calling this method several times will return iterators that have the same state.
-
twoPhaseIterator
Description copied from class:Scorer
Optional method: Return aTwoPhaseIterator
view of thisScorer
. A return value ofnull
indicates that two-phase iteration is not supported.Note that the returned
TwoPhaseIterator
'sapproximation
must advance synchronously with theScorer.iterator()
: advancing the approximation must advance the iterator and vice-versa.Implementing this method is typically useful on
Scorer
s that have a high per-document overhead in order to confirm matches.The default implementation returns
null
.- Overrides:
twoPhaseIterator
in classScorer
-
advanceAll
- Throws:
IOException
-
setTopListAndFreq
private void setTopListAndFreq() -
setTopListAndFreqIfNecessary
- Throws:
IOException
-
score
Description copied from class:Scorable
Returns the score of the current document matching the query.- Specified by:
score
in classScorable
- Throws:
IOException
-
getMaxScore
Description copied from class:Scorer
Return the maximum score that documents between the lasttarget
that this iterator wasshallow-advanced
to included andupTo
included.- Specified by:
getMaxScore
in classScorer
- Throws:
IOException
-
docID
public int docID()Description copied from class:Scorable
Returns the doc ID that is currently being scored.
-