public class PayloadScoreQuery extends SpanQuery
PayloadFunction
to modify the score of a
wrapped SpanQuery
NOTE: In order to take advantage of this with the default scoring implementation
(ClassicSimilarity
), you must override ClassicSimilarity.scorePayload(int, int, int, BytesRef)
,
which returns 1 by default.Constructor and Description |
---|
PayloadScoreQuery(SpanQuery wrappedQuery,
PayloadFunction function)
Creates a new PayloadScoreQuery that includes the underlying span scores
|
PayloadScoreQuery(SpanQuery wrappedQuery,
PayloadFunction function,
boolean includeSpanScore)
Creates a new PayloadScoreQuery
|
Modifier and Type | Method and Description |
---|---|
SpanWeight |
createWeight(IndexSearcher searcher,
boolean needsScores)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(Object other)
Override and implement query instance equivalence properly in a subclass.
|
String |
getField()
Returns the name of the field matched by this query.
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
String |
toString(String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
getTermContexts, getTermContexts
classHash, rewrite, sameClassAs, toString
public PayloadScoreQuery(SpanQuery wrappedQuery, PayloadFunction function, boolean includeSpanScore)
wrappedQuery
- the query to wrapfunction
- a PayloadFunction to use to modify the scoresincludeSpanScore
- include both span score and payload score in the scoring algorithmpublic PayloadScoreQuery(SpanQuery wrappedQuery, PayloadFunction function)
wrappedQuery
- the query to wrapfunction
- a PayloadFunction to use to modify the scorespublic String getField()
SpanQuery
public String toString(String field)
Query
field
assumed to be the
default field and omitted.public SpanWeight createWeight(IndexSearcher searcher, boolean needsScores) throws IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class SpanQuery
needsScores
- True if document scores (Scorer.score()
) or match
frequencies (Scorer.freq()
) are needed.IOException
public boolean equals(Object other)
Query
QueryCache
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 that other
instance. Utility methods are provided for certain repetitive code.equals
in class Query
Query.sameClassAs(Object)
,
Query.classHash()
public int hashCode()
Query
QueryCache
works properly.hashCode
in class Query
Query.equals(Object)
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