Package org.apache.lucene.search.join
Class BlockJoinSelector
java.lang.Object
org.apache.lucene.search.join.BlockJoinSelector
Select a value from a block of documents.
- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic enumType of selection to perform. -
Method Summary
Modifier and TypeMethodDescriptionprotected static BitSetIteratorcreates an iterator for the given bitsetstatic NumericDocValueswrap(NumericDocValues values, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedNumericDocValues, iterating over only child documents, in order to only select one value per parent among itschildrenusing the configuredselectiontype.static SortedDocValueswrap(SortedDocValues values, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype.static NumericDocValueswrap(SortedNumericDocValues sortedNumerics, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedNumericDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype.static SortedDocValueswrap(SortedSetDocValues sortedSet, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedSetDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype.static BitsReturn aBitsinstance that returns true if, and only if, any of the children of the given parent document has a value.
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Method Details
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wrap
Return aBitsinstance that returns true if, and only if, any of the children of the given parent document has a value. -
wrap
public static SortedDocValues wrap(SortedSetDocValues sortedSet, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedSetDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype. -
wrap
public static SortedDocValues wrap(SortedDocValues values, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype. -
toIter
creates an iterator for the given bitset -
wrap
public static NumericDocValues wrap(SortedNumericDocValues sortedNumerics, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedSortedNumericDocValuesin order to only select one value per parent among itschildrenusing the configuredselectiontype. -
wrap
public static NumericDocValues wrap(NumericDocValues values, BlockJoinSelector.Type selection, BitSet parents, DocIdSetIterator children) Wraps the providedNumericDocValues, iterating over only child documents, in order to only select one value per parent among itschildrenusing the configuredselectiontype.
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