public final class ConstantScoreQuery extends Query
Modifier and Type | Class and Description |
---|---|
protected static class |
ConstantScoreQuery.ConstantBulkScorer
We return this as our
BulkScorer so that if the CSQ
wraps a query with its own optimized top-level
scorer (e.g. |
Constructor and Description |
---|
ConstantScoreQuery(Query query)
Strips off scores from the passed in Query.
|
Modifier and Type | Method and Description |
---|---|
Weight |
createWeight(IndexSearcher searcher,
ScoreMode scoreMode,
float boost)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(Object other)
Override and implement query instance equivalence properly in a subclass.
|
Query |
getQuery()
Returns the encapsulated query.
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
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. |
void |
visit(QueryVisitor visitor)
Recurse through the query tree, visiting any child queries
|
classHash, sameClassAs, toString
public ConstantScoreQuery(Query query)
public Query getQuery()
public Query rewrite(IndexReader reader) throws IOException
Query
rewrite
in class Query
IOException
public void visit(QueryVisitor visitor)
Query
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.IOException
public String toString(String field)
Query
field
assumed to be the
default field and omitted.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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