public final class SynonymQuery extends Query
For scoring purposes, this query tries to score the terms as if you had indexed them as one term: it will match any of the terms but only invoke the similarity a single time, scoring the sum of all term frequencies for the document.
Constructor and Description |
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SynonymQuery(Term... terms)
Creates a new SynonymQuery, matching any of the supplied terms.
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Modifier and Type | Method and Description |
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Weight |
createWeight(IndexSearcher searcher,
boolean needsScores)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(Object obj) |
List<Term> |
getTerms() |
int |
hashCode() |
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
String |
toString(String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
public SynonymQuery(Term... terms)
The terms must all have the same field.
public String toString(String field)
Query
field
assumed to be the
default field and omitted.public Query rewrite(IndexReader reader) throws IOException
Query
rewrite
in class Query
IOException
public Weight createWeight(IndexSearcher searcher, boolean needsScores) throws IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
needsScores
- True if document scores (Scorer.score()
) or match
frequencies (Scorer.freq()
) are needed.IOException
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