Module org.apache.lucene.grouping
Class DistinctValuesCollector.ValuesCollector<R>
- java.lang.Object
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- org.apache.lucene.search.SimpleCollector
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- org.apache.lucene.search.grouping.DistinctValuesCollector.ValuesCollector<R>
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- All Implemented Interfaces:
Collector
,LeafCollector
- Enclosing class:
- DistinctValuesCollector<T,R>
private static class DistinctValuesCollector.ValuesCollector<R> extends SimpleCollector
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Field Summary
Fields Modifier and Type Field Description (package private) java.util.Set<R>
values
(package private) GroupSelector<R>
valueSelector
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Constructor Summary
Constructors Modifier Constructor Description private
ValuesCollector(GroupSelector<R> valueSelector)
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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.protected void
doSetNextReader(LeafReaderContext context)
This method is called before collectingcontext
.ScoreMode
scoreMode()
Indicates what features are required from the scorer.-
Methods inherited from class org.apache.lucene.search.SimpleCollector
getLeafCollector, setScorer
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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
collect, competitiveIterator, finish
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Field Detail
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valueSelector
final GroupSelector<R> valueSelector
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values
final java.util.Set<R> values
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Constructor Detail
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ValuesCollector
private ValuesCollector(GroupSelector<R> valueSelector)
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Method Detail
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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
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:
java.io.IOException
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doSetNextReader
protected void doSetNextReader(LeafReaderContext context) throws java.io.IOException
Description copied from class:SimpleCollector
This method is called before collectingcontext
.- Overrides:
doSetNextReader
in classSimpleCollector
- Throws:
java.io.IOException
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