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java.lang.Object org.apache.lucene.search.MultiTermQuery.RewriteMethod org.apache.lucene.search.TopTermsRewrite<BooleanQuery> org.apache.lucene.search.MultiTermQuery.TopTermsScoringBooleanQueryRewrite
public static final class MultiTermQuery.TopTermsScoringBooleanQueryRewrite
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. It is the default rewrite method for
FuzzyQuery
.
MultiTermQuery.setRewriteMethod(org.apache.lucene.search.MultiTermQuery.RewriteMethod)
,
Serialized FormNested Class Summary | |
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protected static interface |
TermCollectingRewrite.TermCollector
|
Constructor Summary | |
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MultiTermQuery.TopTermsScoringBooleanQueryRewrite(int size)
Create a TopTermsScoringBooleanQueryRewrite for at most size terms. |
Method Summary | |
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protected void |
addClause(BooleanQuery topLevel,
Term term,
float boost)
Add a MultiTermQuery term to the top-level query |
protected void |
collectTerms(IndexReader reader,
MultiTermQuery query,
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 |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public MultiTermQuery.TopTermsScoringBooleanQueryRewrite(int size)
size
terms.
NOTE: if BooleanQuery.getMaxClauseCount()
is smaller than
size
, then it will be used instead.
Method Detail |
---|
protected int getMaxSize()
TopTermsRewrite
getMaxSize
in class TopTermsRewrite<BooleanQuery>
protected BooleanQuery getTopLevelQuery()
protected void addClause(BooleanQuery topLevel, Term term, float boost)
protected final void collectTerms(IndexReader reader, MultiTermQuery query, TermCollectingRewrite.TermCollector collector) throws IOException
IOException
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