- java.lang.Object
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- org.apache.lucene.search.TwoPhaseIterator
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- org.apache.lucene.search.DisjunctionScorer.TwoPhase
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- Enclosing class:
- DisjunctionScorer
private class DisjunctionScorer.TwoPhase extends TwoPhaseIterator
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Field Summary
Fields Modifier and Type Field Description private float
matchCost
(package private) PriorityQueue<DisiWrapper>
unverifiedMatches
(package private) DisiWrapper
verifiedMatches
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Fields inherited from class org.apache.lucene.search.TwoPhaseIterator
approximation
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Constructor Summary
Constructors Modifier Constructor Description private
TwoPhase(DocIdSetIterator approximation, float matchCost)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) DisiWrapper
getSubMatches()
float
matchCost()
An estimate of the expected cost to determine that a single documentTwoPhaseIterator.matches()
.boolean
matches()
Return whether the current doc ID thatTwoPhaseIterator.approximation()
is on matches.-
Methods inherited from class org.apache.lucene.search.TwoPhaseIterator
approximation, asDocIdSetIterator, unwrap
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Field Detail
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matchCost
private final float matchCost
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verifiedMatches
DisiWrapper verifiedMatches
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unverifiedMatches
final PriorityQueue<DisiWrapper> unverifiedMatches
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Constructor Detail
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TwoPhase
private TwoPhase(DocIdSetIterator approximation, float matchCost)
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Method Detail
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getSubMatches
DisiWrapper getSubMatches() throws java.io.IOException
- Throws:
java.io.IOException
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matches
public boolean matches() throws java.io.IOException
Description copied from class:TwoPhaseIterator
Return whether the current doc ID thatTwoPhaseIterator.approximation()
is on matches. This method should only be called when the iterator is positioned -- ie. not whenDocIdSetIterator.docID()
is-1
orDocIdSetIterator.NO_MORE_DOCS
-- and at most once.- Specified by:
matches
in classTwoPhaseIterator
- Throws:
java.io.IOException
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matchCost
public float matchCost()
Description copied from class:TwoPhaseIterator
An estimate of the expected cost to determine that a single documentTwoPhaseIterator.matches()
. This can be called before iterating the documents ofTwoPhaseIterator.approximation()
. Returns an expected cost in number of simple operations like addition, multiplication, comparing two numbers and indexing an array. The returned value must be positive.- Specified by:
matchCost
in classTwoPhaseIterator
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