org.apache.lucene.search.payloads
Class PayloadNearQuery
java.lang.Object
org.apache.lucene.search.Query
org.apache.lucene.search.spans.SpanQuery
org.apache.lucene.search.spans.SpanNearQuery
org.apache.lucene.search.payloads.PayloadNearQuery
- All Implemented Interfaces:
- Cloneable
public class PayloadNearQuery
- extends SpanNearQuery
This class is very similar to
SpanNearQuery
except that it factors
in the value of the payloads located at each of the positions where the
TermSpans
occurs.
NOTE: In order to take advantage of this with the default scoring implementation
(DefaultSimilarity
), you must override DefaultSimilarity.scorePayload(int, int, int, BytesRef)
,
which returns 1 by default.
Payload scores are aggregated using a pluggable PayloadFunction
.
- See Also:
Similarity.SimScorer.computePayloadFactor(int, int, int, BytesRef)
fieldName
protected String fieldName
function
protected PayloadFunction function
PayloadNearQuery
public PayloadNearQuery(SpanQuery[] clauses,
int slop,
boolean inOrder)
PayloadNearQuery
public PayloadNearQuery(SpanQuery[] clauses,
int slop,
boolean inOrder,
PayloadFunction function)
createWeight
public Weight createWeight(IndexSearcher searcher)
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 class SpanQuery
- Throws:
IOException
clone
public PayloadNearQuery clone()
- Description copied from class:
Query
- Returns a clone of this query.
- Overrides:
clone
in class SpanNearQuery
toString
public String toString(String field)
- Description copied from class:
Query
- Prints a query to a string, with
field
assumed to be the
default field and omitted.
- Overrides:
toString
in class SpanNearQuery
hashCode
public int hashCode()
- Overrides:
hashCode
in class SpanNearQuery
equals
public boolean equals(Object obj)
- Description copied from class:
SpanNearQuery
- Returns true iff
o
is equal to this.
- Overrides:
equals
in class SpanNearQuery
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