Class IndexSortSortedNumericDocValuesRangeQuery
This optimized execution strategy is only used if the following conditions hold:
- The index is sorted, and its primary sort is on the same field as the query.
- The query field has either
SortedNumericDocValues
orNumericDocValues
. - The sort field is of type
SortField.Type.LONG
orSortField.Type.INT
. - The segments must have at most one field value per document (otherwise we cannot easily determine the matching document IDs through a binary search).
fallbackQuery
.
This fallback must be an equivalent range query -- it should produce the same documents and
give constant scores. As an example, an IndexSortSortedNumericDocValuesRangeQuery
might
be constructed as follows:
String field = "field"; long lowerValue = 0, long upperValue = 10; Query fallbackQuery = LongPoint.newRangeQuery(field, lowerValue, upperValue); Query rangeQuery = new IndexSortSortedNumericDocValuesRangeQuery( field, lowerValue, upperValue, fallbackQuery);
- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Constructor Summary
ConstructorDescriptionIndexSortSortedNumericDocValuesRangeQuery
(String field, long lowerValue, long upperValue, Query fallbackQuery) Creates a newIndexSortSortedNumericDocValuesRangeQuery
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Method Summary
Modifier and TypeMethodDescriptioncreateWeight
(IndexSearcher searcher, ScoreMode scoreMode, float boost) Expert: Constructs an appropriate Weight implementation for this query.boolean
Override and implement query instance equivalence properly in a subclass.int
hashCode()
Override and implement query hash code properly in a subclass.rewrite
(IndexSearcher indexSearcher) Expert: called to re-write queries into primitive queries.Prints a query to a string, withfield
assumed to be the default field and omitted.void
visit
(QueryVisitor visitor) Recurse through the query tree, visiting any child queries.Methods inherited from class org.apache.lucene.search.Query
classHash, rewrite, sameClassAs, toString
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Constructor Details
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IndexSortSortedNumericDocValuesRangeQuery
public IndexSortSortedNumericDocValuesRangeQuery(String field, long lowerValue, long upperValue, Query fallbackQuery) Creates a newIndexSortSortedNumericDocValuesRangeQuery
.- Parameters:
field
- The field name.lowerValue
- The lower end of the range (inclusive).upperValue
- The upper end of the range (exclusive).fallbackQuery
- A query to fall back to if the optimization cannot be applied.
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Method Details
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getFallbackQuery
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equals
Description copied from class:Query
Override and implement query instance equivalence properly in a subclass. This is required so thatQueryCache
works properly.Typically a query will be equal to another only if it's an instance of the same class and its document-filtering properties are identical to those of the other instance. Utility methods are provided for certain repetitive code.
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hashCode
public int hashCode()Description copied from class:Query
Override and implement query hash code properly in a subclass. This is required so thatQueryCache
works properly. -
visit
Description copied from class:Query
Recurse through the query tree, visiting any child queries. -
toString
Description copied from class:Query
Prints a query to a string, withfield
assumed to be the default field and omitted. -
rewrite
Description copied from class:Query
Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.Callers are expected to call
rewrite
multiple times if necessary, until the rewritten query is the same as the original query.The rewrite process may be able to make use of IndexSearcher's executor and be executed in parallel if the executor is provided.
However, if any of the intermediary queries do not satisfy the new API, parallel rewrite is not possible for any subsequent sub-queries. To take advantage of this API, the entire query tree must override this method.
- Overrides:
rewrite
in classQuery
- Throws:
IOException
- See Also:
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createWeight
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException Description copied from class:Query
Expert: Constructs an appropriate Weight implementation for this query.Only implemented by primitive queries, which re-write to themselves.
- Overrides:
createWeight
in classQuery
- Parameters:
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.- Throws:
IOException
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