Class TopGroupsCollector.MaxScoreCollector
- java.lang.Object
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- org.apache.lucene.search.SimpleCollector
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- org.apache.lucene.search.grouping.TopGroupsCollector.MaxScoreCollector
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- All Implemented Interfaces:
Collector
,LeafCollector
- Enclosing class:
- TopGroupsCollector<T>
private static class TopGroupsCollector.MaxScoreCollector extends SimpleCollector
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Field Summary
Fields Modifier and Type Field Description private boolean
collectedAnyHits
private float
maxScore
private Scorable
scorer
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Constructor Summary
Constructors Constructor Description MaxScoreCollector()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
collect(int doc)
Called once for every document matching a query, with the unbased document number.float
getMaxScore()
ScoreMode
scoreMode()
Indicates what features are required from the scorer.void
setScorer(Scorable scorer)
Called before successive calls toLeafCollector.collect(int)
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Methods inherited from class org.apache.lucene.search.SimpleCollector
doSetNextReader, getLeafCollector
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.lucene.search.LeafCollector
competitiveIterator
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Field Detail
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scorer
private Scorable scorer
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maxScore
private float maxScore
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collectedAnyHits
private boolean collectedAnyHits
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Method Detail
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getMaxScore
public float getMaxScore()
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scoreMode
public ScoreMode scoreMode()
Description copied from interface:Collector
Indicates what features are required from the scorer.
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setScorer
public void setScorer(Scorable scorer)
Description copied from interface:LeafCollector
Called before successive calls toLeafCollector.collect(int)
. Implementations that need the score of the current document (passed-in toLeafCollector.collect(int)
), should save the passed-in Scorer and call scorer.score() when needed.- Specified by:
setScorer
in interfaceLeafCollector
- Overrides:
setScorer
in classSimpleCollector
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collect
public void collect(int doc) throws java.io.IOException
Description copied from interface:LeafCollector
Called once for every document matching a query, with the unbased document number.Note: The collection of the current segment can be terminated by throwing a
CollectionTerminatedException
. In this case, the last docs of the currentLeafReaderContext
will be skipped andIndexSearcher
will swallow the exception and continue collection with the next leaf.Note: This is called in an inner search loop. For good search performance, implementations of this method should not call
IndexSearcher.doc(int)
orIndexReader.document(int)
on every hit. Doing so can slow searches by an order of magnitude or more.- Specified by:
collect
in interfaceLeafCollector
- Specified by:
collect
in classSimpleCollector
- Throws:
java.io.IOException
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