Package org.apache.lucene.queries

Class ExtendedCommonTermsQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.queries.CommonTermsQuery

org.apache.lucene.queries.ExtendedCommonTermsQuery

public class ExtendedCommonTermsQuery
extends org.apache.lucene.queries.CommonTermsQuery

Extended version of CommonTermsQuery that allows to pass in a minimumNumberShouldMatch specification that uses the actual num of high frequent terms to calculate the minimum matching terms.

Field Summary

Fields inherited from class org.apache.lucene.queries.CommonTermsQuery

highFreqBoost, highFreqMinNrShouldMatch, highFreqOccur, lowFreqBoost, lowFreqMinNrShouldMatch, lowFreqOccur, maxTermFrequency, terms

Constructor Summary

Constructors

Constructor	Description
ExtendedCommonTermsQuery(org.apache.lucene.search.BooleanClause.Occur highFreqOccur, org.apache.lucene.search.BooleanClause.Occur lowFreqOccur, float maxTermFrequency)

Method Summary

Modifier and Type	Method	Description
protected int	calcHighFreqMinimumNumberShouldMatch(int numOptional)
protected int	calcLowFreqMinimumNumberShouldMatch(int numOptional)
protected int	calcMinimumNumberShouldMatch(java.lang.String spec, int numOptional)
java.lang.String	getHighFreqMinimumNumberShouldMatchSpec()
java.lang.String	getLowFreqMinimumNumberShouldMatchSpec()
float	getMaxTermFrequency()
void	setHighFreqMinimumNumberShouldMatch(java.lang.String spec)
void	setLowFreqMinimumNumberShouldMatch(java.lang.String spec)

Methods inherited from class org.apache.lucene.queries.CommonTermsQuery

add, buildQuery, collectTermContext, equals, getHighFreqBoost, getHighFreqMinimumNumberShouldMatch, getHighFreqOccur, getLowFreqBoost, getLowFreqMinimumNumberShouldMatch, getLowFreqOccur, getTerms, hashCode, newTermQuery, rewrite, setHighFreqMinimumNumberShouldMatch, setLowFreqMinimumNumberShouldMatch, toString

Methods inherited from class org.apache.lucene.search.Query

classHash, createWeight, sameClassAs, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtendedCommonTermsQuery

public ExtendedCommonTermsQuery(org.apache.lucene.search.BooleanClause.Occur highFreqOccur,
                                org.apache.lucene.search.BooleanClause.Occur lowFreqOccur,
                                float maxTermFrequency)

Method Detail

calcLowFreqMinimumNumberShouldMatch

protected int calcLowFreqMinimumNumberShouldMatch(int numOptional)

Overrides:

calcLowFreqMinimumNumberShouldMatch in class org.apache.lucene.queries.CommonTermsQuery

calcMinimumNumberShouldMatch

protected int calcMinimumNumberShouldMatch(java.lang.String spec,
                                           int numOptional)

calcHighFreqMinimumNumberShouldMatch

protected int calcHighFreqMinimumNumberShouldMatch(int numOptional)

Overrides:

calcHighFreqMinimumNumberShouldMatch in class org.apache.lucene.queries.CommonTermsQuery

setHighFreqMinimumNumberShouldMatch

public void setHighFreqMinimumNumberShouldMatch(java.lang.String spec)

getHighFreqMinimumNumberShouldMatchSpec

public java.lang.String getHighFreqMinimumNumberShouldMatchSpec()

setLowFreqMinimumNumberShouldMatch

public void setLowFreqMinimumNumberShouldMatch(java.lang.String spec)

getLowFreqMinimumNumberShouldMatchSpec

public java.lang.String getLowFreqMinimumNumberShouldMatchSpec()

getMaxTermFrequency

public float getMaxTermFrequency()

Overrides:

getMaxTermFrequency in class org.apache.lucene.queries.CommonTermsQuery