org.apache.lucene.search.similar
Class MoreLikeThisQuery

java.lang.Object
  extended by org.apache.lucene.search.Query
      extended by org.apache.lucene.search.similar.MoreLikeThisQuery
All Implemented Interfaces:
Serializable, Cloneable

public class MoreLikeThisQuery
extends Query

A simple wrapper for MoreLikeThis for use in scenarios where a Query object is required eg in custom QueryParser extensions. At query.rewrite() time the reader is used to construct the actual MoreLikeThis object and obtain the real Query object.

See Also:
Serialized Form

Constructor Summary
MoreLikeThisQuery(String likeText, String[] moreLikeFields, Analyzer analyzer)
          Deprecated. use MoreLikeThisQuery(String, String[], Analyzer, String) instead.
MoreLikeThisQuery(String likeText, String[] moreLikeFields, Analyzer analyzer, String fieldName)
           
 
Method Summary
 Analyzer getAnalyzer()
           
 String getLikeText()
           
 int getMaxQueryTerms()
           
 int getMinDocFreq()
           
 int getMinTermFrequency()
           
 String[] getMoreLikeFields()
           
 float getPercentTermsToMatch()
           
 Set<?> getStopWords()
           
 Query rewrite(IndexReader reader)
          Expert: called to re-write queries into primitive queries.
 void setAnalyzer(Analyzer analyzer)
           
 void setLikeText(String likeText)
           
 void setMaxQueryTerms(int maxQueryTerms)
           
 void setMinDocFreq(int minDocFreq)
           
 void setMinTermFrequency(int minTermFrequency)
           
 void setMoreLikeFields(String[] moreLikeFields)
           
 void setPercentTermsToMatch(float percentTermsToMatch)
           
 void setStopWords(Set<?> stopWords)
           
 String toString(String field)
          Prints a query to a string, with field assumed to be the default field and omitted.
 
Methods inherited from class org.apache.lucene.search.Query
clone, combine, createWeight, equals, extractTerms, getBoost, getSimilarity, hashCode, mergeBooleanQueries, setBoost, toString, weight
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

MoreLikeThisQuery

@Deprecated
public MoreLikeThisQuery(String likeText,
                                    String[] moreLikeFields,
                                    Analyzer analyzer)
Deprecated. use MoreLikeThisQuery(String, String[], Analyzer, String) instead.


MoreLikeThisQuery

public MoreLikeThisQuery(String likeText,
                         String[] moreLikeFields,
                         Analyzer analyzer,
                         String fieldName)
Parameters:
moreLikeFields -
Method Detail

rewrite

public Query rewrite(IndexReader reader)
              throws IOException
Description copied from class: Query
Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.

Overrides:
rewrite in class Query
Throws:
IOException

toString

public String toString(String field)
Description copied from class: Query
Prints a query to a string, with field assumed to be the default field and omitted.

The representation used is one that is supposed to be readable by QueryParser. However, there are the following limitations:

Specified by:
toString in class Query

getPercentTermsToMatch

public float getPercentTermsToMatch()

setPercentTermsToMatch

public void setPercentTermsToMatch(float percentTermsToMatch)

getAnalyzer

public Analyzer getAnalyzer()

setAnalyzer

public void setAnalyzer(Analyzer analyzer)

getLikeText

public String getLikeText()

setLikeText

public void setLikeText(String likeText)

getMaxQueryTerms

public int getMaxQueryTerms()

setMaxQueryTerms

public void setMaxQueryTerms(int maxQueryTerms)

getMinTermFrequency

public int getMinTermFrequency()

setMinTermFrequency

public void setMinTermFrequency(int minTermFrequency)

getMoreLikeFields

public String[] getMoreLikeFields()

setMoreLikeFields

public void setMoreLikeFields(String[] moreLikeFields)

getStopWords

public Set<?> getStopWords()

setStopWords

public void setStopWords(Set<?> stopWords)

getMinDocFreq

public int getMinDocFreq()

setMinDocFreq

public void setMinDocFreq(int minDocFreq)


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