Class DocComparator
- java.lang.Object
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- org.apache.lucene.search.FieldComparator<Integer>
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- org.apache.lucene.search.comparators.DocComparator
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public class DocComparator extends FieldComparator<Integer>
Comparator that sorts by asc _doc
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.FieldComparator
FieldComparator.RelevanceComparator, FieldComparator.TermValComparator
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Constructor Summary
Constructors Constructor Description DocComparator(int numHits, boolean reverse, Pruning pruning)Creates a new comparator based on document ids fornumHits
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description intcompare(int slot1, int slot2)Compare hit at slot1 with hit at slot2.LeafFieldComparatorgetLeafComparator(LeafReaderContext context)Get a per-segmentLeafFieldComparatorto collect the givenLeafReaderContext.voidsetTopValue(Integer value)Record the top value, for future calls toLeafFieldComparator.compareTop(int).Integervalue(int slot)Return the actual value in the slot.-
Methods inherited from class org.apache.lucene.search.FieldComparator
compareValues, disableSkipping, setSingleSort
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Constructor Detail
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DocComparator
public DocComparator(int numHits, boolean reverse, Pruning pruning)Creates a new comparator based on document ids fornumHits
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Method Detail
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compare
public int compare(int slot1, int slot2)Description copied from class:FieldComparatorCompare hit at slot1 with hit at slot2.- Specified by:
comparein classFieldComparator<Integer>- Parameters:
slot1- first slot to compareslot2- second slot to compare- Returns:
- any
N < 0if slot2's value is sorted after slot1, anyN > 0if the slot2's value is sorted before slot1 and0if they are equal
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getLeafComparator
public LeafFieldComparator getLeafComparator(LeafReaderContext context)
Description copied from class:FieldComparatorGet a per-segmentLeafFieldComparatorto collect the givenLeafReaderContext. All docIDs supplied to thisLeafFieldComparatorare relative to the current reader (you must add docBase if you need to map it to a top-level docID).- Specified by:
getLeafComparatorin classFieldComparator<Integer>- Parameters:
context- current reader context- Returns:
- the comparator to use for this segment
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setTopValue
public void setTopValue(Integer value)
Description copied from class:FieldComparatorRecord the top value, for future calls toLeafFieldComparator.compareTop(int). This is only called for searches that use searchAfter (deep paging), and is called before any calls toFieldComparator.getLeafComparator(LeafReaderContext).- Specified by:
setTopValuein classFieldComparator<Integer>
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value
public Integer value(int slot)
Description copied from class:FieldComparatorReturn the actual value in the slot.- Specified by:
valuein classFieldComparator<Integer>- Parameters:
slot- the value- Returns:
- value in this slot
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