Class IndexFieldData.XFieldComparatorSource
org.apache.lucene.search.FieldComparatorSource
org.elasticsearch.index.fielddata.IndexFieldData.XFieldComparatorSource
- Direct Known Subclasses:
BytesRefFieldComparatorSource
,DoubleValuesComparatorSource
,FloatValuesComparatorSource
,LongValuesComparatorSource
- Enclosing interface:
- IndexFieldData<FD extends LeafFieldData>
public abstract static class IndexFieldData.XFieldComparatorSource
extends org.apache.lucene.search.FieldComparatorSource
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Nested Class Summary
Modifier and TypeClassDescriptionstatic class
Simple wrapper class around a filter that matches parent documents and a filter that matches child documents. -
Field Summary
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Constructor Summary
ConstructorDescriptionmissingValue, MultiValueMode sortMode, IndexFieldData.XFieldComparatorSource.Nested nested)
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Method Summary
Modifier and TypeMethodDescriptionmissingValue, boolean reversed)
Return the missing object value according to the reduced type of the comparator.missingValue(boolean reversed)
Return a missing value that is understandable bySortField.setMissingValue(Object)
.nested()
abstract BucketedSort
newBucketedSort(BigArrays bigArrays, SortOrder sortOrder, DocValueFormat format, int bucketSize, BucketedSort.ExtraData extra)
Create a BucketedSort which is useful for sorting inside of aggregations.abstract org.apache.lucene.search.SortField.Type
static boolean
missingValue)
Whether missing values should be sorted first.static boolean
missingValue)
Whether missing values should be sorted last, this is the default.sortMode()
Methods inherited from class org.apache.lucene.search.FieldComparatorSource
newComparator
Methods inherited from class java.lang.
, , , , , , , , , ,
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Field Details
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sortMode
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missingValue
protected final missingValue -
nested
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Constructor Details
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XFieldComparatorSource
public XFieldComparatorSource( missingValue, MultiValueMode sortMode, IndexFieldData.XFieldComparatorSource.Nested nested)
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Method Details
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sortMode
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nested
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sortMissingFirst
public static final boolean sortMissingFirst( missingValue)Whether missing values should be sorted first. -
sortMissingLast
public static final boolean sortMissingLast( missingValue)Whether missing values should be sorted last, this is the default. -
missingObject
public missingObject( missingValue, boolean reversed)Return the missing object value according to the reduced type of the comparator. -
reducedType
public abstract org.apache.lucene.search.SortField.Type reducedType() -
missingValue
public missingValue(boolean reversed)Return a missing value that is understandable bySortField.setMissingValue(Object)
. Most implementations return null because they already replace the value at the fielddata level. However this can't work in case of strings since there is no such thing as a string which compares greater than any other string, so in that case we need to returnSortField.STRING_FIRST
orSortField.STRING_LAST
so that the coordinating node knows how to deal with null values. -
newBucketedSort
public abstract BucketedSort newBucketedSort(BigArrays bigArrays, SortOrder sortOrder, DocValueFormat format, int bucketSize, BucketedSort.ExtraData extra)Create a BucketedSort which is useful for sorting inside of aggregations.
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