Package org.apache.lucene.sandbox.search
Class LargeNumHitsTopDocsCollector
java.lang.Object
org.apache.lucene.sandbox.search.LargeNumHitsTopDocsCollector
- All Implemented Interfaces:
Collector
Optimized collector for large number of hits. The collector maintains an ArrayList of hits until
it accumulates the requested number of hits. Post that, it builds a Priority Queue and starts
filtering further hits based on the minimum competitive score.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiongetLeafCollector(LeafReaderContext context) protected TopDocsnewTopDocs(ScoreDoc[] results) Returns aTopDocsinstance containing the given results.protected voidpopulateResults(ScoreDoc[] results, int howMany) Populates the results array with the ScoreDoc instances.topDocs()Returns the top docs that were collected by this collector.topDocs(int howMany) Returns the top docs that were collected by this collector.
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Constructor Details
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LargeNumHitsTopDocsCollector
public LargeNumHitsTopDocsCollector(int requestedHitCount)
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Method Details
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scoreMode
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getLeafCollector
- Specified by:
getLeafCollectorin interfaceCollector
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topDocs
Returns the top docs that were collected by this collector. -
populateResults
Populates the results array with the ScoreDoc instances. This can be overridden in case a different ScoreDoc type should be returned. -
newTopDocs
Returns aTopDocsinstance containing the given results. Ifresultsis null it means there are no results to return, either because there were 0 calls to collect() or because the arguments to topDocs were invalid. -
topDocs
Returns the top docs that were collected by this collector.
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