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java.lang.Object org.apache.lucene.search.Query org.apache.lucene.search.ConstantScoreQuery
public class ConstantScoreQuery
A query that wraps a filter and simply returns a constant score equal to the query boost for every document in the filter.
Nested Class Summary | |
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protected class |
ConstantScoreQuery.ConstantScorer
|
protected class |
ConstantScoreQuery.ConstantWeight
|
Field Summary | |
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protected Filter |
filter
|
Constructor Summary | |
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ConstantScoreQuery(Filter filter)
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Method Summary | |
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Weight |
createWeight(Searcher searcher)
Expert: Constructs an appropriate Weight implementation for this query. |
boolean |
equals(Object o)
Returns true if o is equal to this. |
void |
extractTerms(Set<Term> terms)
Expert: adds all terms occurring in this query to the terms set. |
Filter |
getFilter()
Returns the encapsulated filter |
int |
hashCode()
Returns a hash code value for this object. |
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries. |
String |
toString(String field)
Prints a user-readable version of this query. |
Methods inherited from class org.apache.lucene.search.Query |
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clone, combine, getBoost, getSimilarity, mergeBooleanQueries, setBoost, toString, weight |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected final Filter filter
Constructor Detail |
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public ConstantScoreQuery(Filter filter)
Method Detail |
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public Filter getFilter()
public Query rewrite(IndexReader reader) throws IOException
Query
rewrite
in class Query
IOException
public void extractTerms(Set<Term> terms)
Query
rewritten
form.
extractTerms
in class Query
public Weight createWeight(Searcher searcher)
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
public String toString(String field)
toString
in class Query
public boolean equals(Object o)
o
is equal to this.
equals
in class Query
public int hashCode()
hashCode
in class Query
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