Package org.apache.lucene.search
Class TopTermsRewrite<Q extends Query>
java.lang.Object
org.apache.lucene.search.MultiTermQuery.RewriteMethod
org.apache.lucene.search.TopTermsRewrite<Q>
- Direct Known Subclasses:
MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite
,MultiTermQuery.TopTermsScoringBooleanQueryRewrite
Base rewrite method for collecting only the top terms
via a priority queue.
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Constructor Summary
ConstructorsConstructorDescriptionTopTermsRewrite
(int size) Create a TopTermsBooleanQueryRewrite for at mostsize
terms. -
Method Summary
Modifier and TypeMethodDescriptionprotected final void
Add a MultiTermQuery term to the top-level queryprotected abstract void
addClause
(Q topLevel, Term term, int docCount, float boost, TermContext states) boolean
protected abstract int
return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).int
getSize()
return the maximum priority queue sizeprotected abstract Q
Return a suitable top-level Query for holding all expanded terms.int
hashCode()
final Q
rewrite
(IndexReader reader, MultiTermQuery query) Methods inherited from class org.apache.lucene.search.MultiTermQuery.RewriteMethod
getTermsEnum
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Constructor Details
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TopTermsRewrite
public TopTermsRewrite(int size) Create a TopTermsBooleanQueryRewrite for at mostsize
terms.NOTE: if
BooleanQuery.getMaxClauseCount()
is smaller thansize
, then it will be used instead.
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Method Details
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getSize
public int getSize()return the maximum priority queue size -
getMaxSize
protected abstract int getMaxSize()return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount). -
rewrite
- Specified by:
rewrite
in classMultiTermQuery.RewriteMethod
- Throws:
IOException
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hashCode
public int hashCode() -
equals
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getTopLevelQuery
Return a suitable top-level Query for holding all expanded terms.- Throws:
IOException
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addClause
Add a MultiTermQuery term to the top-level query- Throws:
IOException
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addClause
protected abstract void addClause(Q topLevel, Term term, int docCount, float boost, TermContext states) throws IOException - Throws:
IOException
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