Package org.apache.lucene.search
Class MultiTermQuery.TopTermsScoringBooleanQueryRewrite
- java.lang.Object
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- org.apache.lucene.search.MultiTermQuery.RewriteMethod
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- org.apache.lucene.search.TopTermsRewrite<BooleanQuery>
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- org.apache.lucene.search.MultiTermQuery.TopTermsScoringBooleanQueryRewrite
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- All Implemented Interfaces:
Serializable
- Enclosing class:
- MultiTermQuery
public static final class MultiTermQuery.TopTermsScoringBooleanQueryRewrite extends TopTermsRewrite<BooleanQuery>
A rewrite method that first translates each term intoBooleanClause.Occur.SHOULD
clause in a BooleanQuery, and keeps the scores as computed by the query.This rewrite method only uses the top scoring terms so it will not overflow the boolean max clause count. It is the default rewrite method for
FuzzyQuery
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Constructor Summary
Constructors Constructor Description TopTermsScoringBooleanQueryRewrite(int size)
Create a TopTermsScoringBooleanQueryRewrite for at mostsize
terms.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
addClause(BooleanQuery topLevel, Term term, float boost)
Add a MultiTermQuery term to the top-level queryprotected void
collectTerms(IndexReader reader, MultiTermQuery query, org.apache.lucene.search.TermCollectingRewrite.TermCollector collector)
protected int
getMaxSize()
return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).protected BooleanQuery
getTopLevelQuery()
Return a suitable top-level Query for holding all expanded terms.-
Methods inherited from class org.apache.lucene.search.TopTermsRewrite
equals, getSize, hashCode, rewrite
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Methods inherited from class org.apache.lucene.search.MultiTermQuery.RewriteMethod
getTermsEnum
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Constructor Detail
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TopTermsScoringBooleanQueryRewrite
public TopTermsScoringBooleanQueryRewrite(int size)
Create a TopTermsScoringBooleanQueryRewrite for at mostsize
terms.NOTE: if
BooleanQuery.getMaxClauseCount()
is smaller thansize
, then it will be used instead.
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Method Detail
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getMaxSize
protected int getMaxSize()
Description copied from class:TopTermsRewrite
return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).- Specified by:
getMaxSize
in classTopTermsRewrite<BooleanQuery>
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getTopLevelQuery
protected BooleanQuery getTopLevelQuery()
Return a suitable top-level Query for holding all expanded terms.
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addClause
protected void addClause(BooleanQuery topLevel, Term term, float boost)
Add a MultiTermQuery term to the top-level query
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collectTerms
protected final void collectTerms(IndexReader reader, MultiTermQuery query, org.apache.lucene.search.TermCollectingRewrite.TermCollector collector) throws IOException
- Throws:
IOException
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