class PhraseScorer extends Scorer
Scorable.ChildScorable
Modifier and Type | Field and Description |
---|---|
private float |
freq |
(package private) float |
matchCost |
(package private) PhraseMatcher |
matcher |
private float |
minCompetitiveScore |
(package private) ScoreMode |
scoreMode |
private LeafSimScorer |
simScorer |
Constructor and Description |
---|
PhraseScorer(Weight weight,
PhraseMatcher matcher,
ScoreMode scoreMode,
LeafSimScorer simScorer) |
Modifier and Type | Method and Description |
---|---|
int |
docID()
Returns the doc ID that is currently being scored.
|
float |
getMaxScore(int upTo)
Return the maximum score that documents between the last
target
that this iterator was shallow-advanced to
included and upTo included. |
DocIdSetIterator |
iterator()
Return a
DocIdSetIterator over matching documents. |
float |
score()
Returns the score of the current document matching the query.
|
void |
setMinCompetitiveScore(float minScore)
Optional method: Tell the scorer that its iterator may safely ignore all
documents whose score is less than the given
minScore . |
java.lang.String |
toString() |
TwoPhaseIterator |
twoPhaseIterator()
Optional method: Return a
TwoPhaseIterator view of this
Scorer . |
advanceShallow, getWeight
getChildren
final PhraseMatcher matcher
final ScoreMode scoreMode
private final LeafSimScorer simScorer
final float matchCost
private float minCompetitiveScore
private float freq
PhraseScorer(Weight weight, PhraseMatcher matcher, ScoreMode scoreMode, LeafSimScorer simScorer)
public TwoPhaseIterator twoPhaseIterator()
Scorer
TwoPhaseIterator
view of this
Scorer
. A return value of null
indicates that
two-phase iteration is not supported.
Note that the returned TwoPhaseIterator
's
approximation
must
advance synchronously with the Scorer.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
.twoPhaseIterator
in class Scorer
public int docID()
Scorable
public float score() throws java.io.IOException
Scorable
public DocIdSetIterator iterator()
Scorer
DocIdSetIterator
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.public void setMinCompetitiveScore(float minScore)
Scorable
minScore
. This is a
no-op by default.
This method may only be called from collectors that use
ScoreMode.TOP_SCORES
, and successive calls may only set increasing
values of minScore
.setMinCompetitiveScore
in class Scorable
public float getMaxScore(int upTo) throws java.io.IOException
Scorer
target
that this iterator was shallow-advanced
to
included and upTo
included.getMaxScore
in class Scorer
java.io.IOException
public java.lang.String toString()
toString
in class java.lang.Object