org.apache.lucene.search.spans

Class SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite

java.lang.Object

org.apache.lucene.search.MultiTermQuery.RewriteMethod

org.apache.lucene.search.spans.SpanMultiTermQueryWrapper.SpanRewriteMethod

org.apache.lucene.search.spans.SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite

Enclosing class:

SpanMultiTermQueryWrapper<Q extends MultiTermQuery>

public static final class SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite
extends SpanMultiTermQueryWrapper.SpanRewriteMethod

A rewrite method that first translates each term into a SpanTermQuery in a 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.

See Also:

MultiTermQuery.setRewriteMethod(org.apache.lucene.search.MultiTermQuery.RewriteMethod)

Field Summary

Fields

Modifier and Type	Field and Description
private TopTermsRewrite<java.util.List<SpanQuery>>	delegate

Constructor Summary

Constructors

Constructor and Description
TopTermsSpanBooleanQueryRewrite(int size) Create a TopTermsSpanBooleanQueryRewrite for at most size terms.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
int	getSize() return the maximum priority queue size
int	hashCode()
SpanQuery	rewrite(IndexReader reader, MultiTermQuery query)

Methods inherited from class org.apache.lucene.search.MultiTermQuery.RewriteMethod

getTermsEnum

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

delegate

private final TopTermsRewrite<java.util.List<SpanQuery>> delegate

Constructor Detail

TopTermsSpanBooleanQueryRewrite

public TopTermsSpanBooleanQueryRewrite(int size)

Create a TopTermsSpanBooleanQueryRewrite for at most size terms.

Method Detail

getSize

public int getSize()

return the maximum priority queue size

rewrite

public SpanQuery rewrite(IndexReader reader,
                         MultiTermQuery query)
                  throws java.io.IOException

Specified by:

rewrite in class SpanMultiTermQueryWrapper.SpanRewriteMethod

Throws:

java.io.IOException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object