final class TermScorer extends Scorer
Scorer
for documents matching a Term
.Scorable.ChildScorable
Modifier and Type | Field and Description |
---|---|
private LeafSimScorer |
docScorer |
private ImpactsDISI |
impactsDisi |
private ImpactsEnum |
impactsEnum |
private DocIdSetIterator |
iterator |
private PostingsEnum |
postingsEnum |
Constructor and Description |
---|
TermScorer(Weight weight,
ImpactsEnum impactsEnum,
LeafSimScorer docScorer)
Construct a
TermScorer that will use impacts to skip blocks of
non-competitive documents. |
TermScorer(Weight weight,
PostingsEnum postingsEnum,
LeafSimScorer docScorer)
Construct a
TermScorer that will iterate all documents. |
Modifier and Type | Method and Description |
---|---|
int |
advanceShallow(int target)
Advance to the block of documents that contains
target in order to
get scoring information about this block. |
int |
docID()
Returns the doc ID that is currently being scored.
|
(package private) int |
freq() |
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()
Returns a string representation of this
TermScorer . |
getWeight, twoPhaseIterator
getChildren
private final PostingsEnum postingsEnum
private final ImpactsEnum impactsEnum
private final DocIdSetIterator iterator
private final LeafSimScorer docScorer
private final ImpactsDISI impactsDisi
TermScorer(Weight weight, PostingsEnum postingsEnum, LeafSimScorer docScorer)
TermScorer
that will iterate all documents.TermScorer(Weight weight, ImpactsEnum impactsEnum, LeafSimScorer docScorer)
TermScorer
that will use impacts to skip blocks of
non-competitive documents.public int docID()
Scorable
final int freq() throws java.io.IOException
java.io.IOException
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 float score() throws java.io.IOException
Scorable
public int advanceShallow(int target) throws java.io.IOException
Scorer
target
in order to
get scoring information about this block. This method is implicitly called
by DocIdSetIterator.advance(int)
and
DocIdSetIterator.nextDoc()
on the returned doc ID. Calling this
method doesn't modify the current DocIdSetIterator.docID()
.
It returns a number that is greater than or equal to all documents
contained in the current block, but less than any doc IDS of the next block.
target
must be >= Scorable.docID()
as well as all targets that
have been passed to Scorer.advanceShallow(int)
so far.advanceShallow
in class Scorer
java.io.IOException
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 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 java.lang.String toString()
TermScorer
.toString
in class java.lang.Object