Class LongComparator
java.lang.Object
org.apache.lucene.search.FieldComparator<Long>
org.apache.lucene.search.comparators.NumericComparator<Long>
org.apache.lucene.search.comparators.LongComparator
Comparator based on
Long.compare(long, long) for numHits. This comparator provides a skipping
functionality – an iterator that can skip over non-competitive documents.-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionclassLeaf comparator forLongComparatorthat provides skipping functionalityNested classes/interfaces inherited from class org.apache.lucene.search.comparators.NumericComparator
NumericComparator.NumericLeafComparatorNested classes/interfaces inherited from class org.apache.lucene.search.FieldComparator
FieldComparator.RelevanceComparator, FieldComparator.TermValComparator -
Field Summary
FieldsFields inherited from class org.apache.lucene.search.comparators.NumericComparator
field, hitsThresholdReached, missingValue, pruning, queueFull, reverse, singleSort, topValueSet -
Constructor Summary
ConstructorsConstructorDescriptionLongComparator(int numHits, String field, Long missingValue, boolean reverse, Pruning pruning) -
Method Summary
Modifier and TypeMethodDescriptionintcompare(int slot1, int slot2) Compare hit at slot1 with hit at slot2.getLeafComparator(LeafReaderContext context) Get a per-segmentLeafFieldComparatorto collect the givenLeafReaderContext.protected longvoidsetTopValue(Long value) Record the top value, for future calls toLeafFieldComparator.compareTop(int).protected longsortableBytesToLong(byte[] bytes) Decode sortable bytes to long.value(int slot) Return the actual value in the slot.Methods inherited from class org.apache.lucene.search.comparators.NumericComparator
disableSkipping, setSingleSortMethods inherited from class org.apache.lucene.search.FieldComparator
compareValues
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Field Details
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topValue
protected long topValue -
bottom
protected long bottom
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Constructor Details
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LongComparator
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Method Details
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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<Long>- 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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setTopValue
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).- Overrides:
setTopValuein classNumericComparator<Long>
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value
Description copied from class:FieldComparatorReturn the actual value in the slot.- Specified by:
valuein classFieldComparator<Long>- Parameters:
slot- the value- Returns:
- value in this slot
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missingValueAsComparableLong
protected long missingValueAsComparableLong()- Specified by:
missingValueAsComparableLongin classNumericComparator<Long>
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sortableBytesToLong
protected long sortableBytesToLong(byte[] bytes) Description copied from class:NumericComparatorDecode sortable bytes to long. It should be consistent with the codec thatPointValuesof this field is using.- Specified by:
sortableBytesToLongin classNumericComparator<Long>
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getLeafComparator
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<Long>- Parameters:
context- current reader context- Returns:
- the comparator to use for this segment
- Throws:
IOException- if there is a low-level IO error
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