public class AssertingSpanWeight extends SpanWeight
SpanWeight.Postings
Weight.DefaultBulkScorer
field, similarity, simWeight
parentQuery
Constructor and Description |
---|
AssertingSpanWeight(IndexSearcher searcher,
SpanWeight in)
Create an AssertingSpanWeight
|
Modifier and Type | Method and Description |
---|---|
Explanation |
explain(LeafReaderContext context,
int doc)
An explanation of the score computation for the named document.
|
void |
extractTermContexts(Map<Term,TermContext> contexts)
Collect all TermContexts used by this Weight
|
void |
extractTerms(Set<Term> terms)
Expert: adds all terms occurring in this query to the terms set.
|
Spans |
getSpans(LeafReaderContext context,
SpanWeight.Postings requiredPostings)
Expert: Return a Spans object iterating over matches from this Weight
|
float |
getValueForNormalization()
The value for normalization of contained query clauses (e.g.
|
void |
normalize(float queryNorm,
float topLevelBoost)
Assigns the query normalization factor and boost from parent queries to this.
|
Scorer |
scorer(LeafReaderContext context)
Returns a
Scorer which can iterate in order over all matching
documents and assign them a score. |
getSimScorer
bulkScorer, getQuery
public AssertingSpanWeight(IndexSearcher searcher, SpanWeight in) throws IOException
in
- the SpanWeight to wrapIOException
- on errorpublic void extractTermContexts(Map<Term,TermContext> contexts)
SpanWeight
extractTermContexts
in class SpanWeight
contexts
- a map to add the TermContexts topublic Spans getSpans(LeafReaderContext context, SpanWeight.Postings requiredPostings) throws IOException
SpanWeight
getSpans
in class SpanWeight
context
- a LeafReaderContext for this SpansrequiredPostings
- the postings information requiredIOException
- on errorpublic void extractTerms(Set<Term> terms)
Weight
Weight
was created with needsScores == true
then this
method will only extract terms which are used for scoring, otherwise it
will extract all terms which are used for matching.extractTerms
in class Weight
public float getValueForNormalization() throws IOException
Weight
getValueForNormalization
in class SpanWeight
IOException
public void normalize(float queryNorm, float topLevelBoost)
Weight
normalize
in class SpanWeight
public Scorer scorer(LeafReaderContext context) throws IOException
Weight
Scorer
which can iterate in order over all matching
documents and assign them a score.
NOTE: null can be returned if no documents will be scored by this query.
NOTE: The returned Scorer
does not have
LeafReader.getLiveDocs()
applied, they need to be checked on top.
scorer
in class SpanWeight
context
- the LeafReaderContext
for which to return the Scorer
.Scorer
which scores documents in/out-of order.IOException
- if there is a low-level I/O errorpublic Explanation explain(LeafReaderContext context, int doc) throws IOException
Weight
explain
in class SpanWeight
context
- the readers context to create the Explanation
for.doc
- the document's id relative to the given context's readerIOException
- if an IOException
occursCopyright © 2000–2015 The Apache Software Foundation. All rights reserved.