Module org.apache.lucene.grouping
Class TopGroupsCollector.MaxScoreCollector
java.lang.Object
org.apache.lucene.search.SimpleCollector
org.apache.lucene.search.grouping.TopGroupsCollector.MaxScoreCollector
- All Implemented Interfaces:
Collector
,LeafCollector
- Enclosing class:
TopGroupsCollector<T>
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
collect
(int doc) Called once for every document matching a query, with the unbased document number.float
Indicates what features are required from the scorer.void
Called before successive calls toLeafCollector.collect(int)
.Methods inherited from class org.apache.lucene.search.SimpleCollector
doSetNextReader, getLeafCollector
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.lucene.search.LeafCollector
collect, competitiveIterator, finish
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Field Details
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scorer
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maxScore
private float maxScore -
collectedAnyHits
private boolean collectedAnyHits
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Constructor Details
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MaxScoreCollector
public MaxScoreCollector()
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Method Details
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getMaxScore
public float getMaxScore() -
scoreMode
Description copied from interface:Collector
Indicates what features are required from the scorer. -
setScorer
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
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
StoredFields.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:
IOException
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