Package org.apache.lucene.search
Class MultiTermQuery.TopTermsScoringBooleanQueryRewrite
java.lang.Object
org.apache.lucene.search.MultiTermQuery.RewriteMethod
org.apache.lucene.search.TopTermsRewrite<BooleanQuery.Builder>
org.apache.lucene.search.MultiTermQuery.TopTermsScoringBooleanQueryRewrite
- Enclosing class:
MultiTermQuery
public static final class MultiTermQuery.TopTermsScoringBooleanQueryRewrite
extends TopTermsRewrite<BooleanQuery.Builder>
A rewrite method that first translates each term into
BooleanClause.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.
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Constructor Summary
ConstructorsConstructorDescriptionTopTermsScoringBooleanQueryRewrite(int size) Create a TopTermsScoringBooleanQueryRewrite for at mostsizeterms. -
Method Summary
Modifier and TypeMethodDescriptionprotected final voidaddClause(BooleanQuery.Builder topLevel, Term term, int docCount, float boost) Add a MultiTermQuery term to the top-level query builder.protected voidaddClause(BooleanQuery.Builder topLevel, Term term, int docCount, float boost, TermStates states) protected Querybuild(BooleanQuery.Builder builder) Finalize the creation of the query from the builder.protected intreturn the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).protected BooleanQuery.BuilderReturn a suitable builder for the top-level Query for holding all expanded terms.Methods inherited from class org.apache.lucene.search.TopTermsRewrite
equals, getSize, hashCode, rewriteMethods inherited from class org.apache.lucene.search.MultiTermQuery.RewriteMethod
getTermsEnum
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Constructor Details
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TopTermsScoringBooleanQueryRewrite
public TopTermsScoringBooleanQueryRewrite(int size) Create a TopTermsScoringBooleanQueryRewrite for at mostsizeterms.NOTE: if
IndexSearcher.getMaxClauseCount()is smaller thansize, then it will be used instead.
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Method Details
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getMaxSize
protected int getMaxSize()Description copied from class:TopTermsRewritereturn the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).- Specified by:
getMaxSizein classTopTermsRewrite<BooleanQuery.Builder>
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getTopLevelBuilder
Return a suitable builder for the top-level Query for holding all expanded terms. -
build
Finalize the creation of the query from the builder. -
addClause
protected void addClause(BooleanQuery.Builder topLevel, Term term, int docCount, float boost, TermStates states) -
addClause
protected final void addClause(BooleanQuery.Builder topLevel, Term term, int docCount, float boost) throws IOException Add a MultiTermQuery term to the top-level query builder.- Throws:
IOException
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