public abstract class Query extends Object implements Cloneable
Instantiable subclasses are:
TermQuery
BooleanQuery
WildcardQuery
PhraseQuery
PrefixQuery
MultiPhraseQuery
FuzzyQuery
RegexpQuery
TermRangeQuery
NumericRangeQuery
ConstantScoreQuery
DisjunctionMaxQuery
MatchAllDocsQuery
See also the family of Span Queries
and additional queries available in the Queries module
Constructor and Description |
---|
Query() |
Modifier and Type | Method and Description |
---|---|
Query |
clone()
Returns a clone of this query.
|
Weight |
createWeight(IndexSearcher searcher)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(Object obj) |
void |
extractTerms(Set<Term> terms)
Expert: adds all terms occurring in this query to the terms set.
|
float |
getBoost()
Gets the boost for this clause.
|
int |
hashCode() |
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
void |
setBoost(float b)
Sets the boost for this query clause to
b . |
String |
toString()
Prints a query to a string.
|
abstract String |
toString(String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
public void setBoost(float b)
b
. Documents
matching this clause will (in addition to the normal weightings) have
their score multiplied by b
.public float getBoost()
b
. The boost is 1.0 by default.public abstract String toString(String field)
field
assumed to be the
default field and omitted.public Weight createWeight(IndexSearcher searcher) throws IOException
Only implemented by primitive queries, which re-write to themselves.
IOException
public Query rewrite(IndexReader reader) throws IOException
IOException
public void extractTerms(Set<Term> terms)
rewritten
form.UnsupportedOperationException
- if this query is not yet rewrittenCopyright © 2000-2014 Apache Software Foundation. All Rights Reserved.