Package org.apache.lucene.queries.mlt

Class MoreLikeThisQuery

  • All Implemented Interfaces:
    java.lang.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.

    • Constructor Detail

      • MoreLikeThisQuery

        public MoreLikeThisQuery​(java.lang.String likeText,
                         java.lang.String[] moreLikeFields,
                         Analyzer analyzer,
                         java.lang.String fieldName)
        Parameters:
        moreLikeFields - fields used for similarity measure

    • Method Detail

      • rewrite

        public Query rewrite​(IndexReader reader)
              throws java.io.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:
        java.io.IOException

      • toString

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

      • setLikeText

        public void setLikeText​(java.lang.String likeText)

      • getMaxQueryTerms

        public int getMaxQueryTerms()

      • setMaxQueryTerms

        public void setMaxQueryTerms​(int maxQueryTerms)

      • getMinTermFrequency

        public int getMinTermFrequency()

      • setMinTermFrequency

        public void setMinTermFrequency​(int minTermFrequency)

      • getMoreLikeFields

        public java.lang.String[] getMoreLikeFields()

      • setMoreLikeFields

        public void setMoreLikeFields​(java.lang.String[] moreLikeFields)

      • getStopWords

        public java.util.Set<?> getStopWords()

      • setStopWords

        public void setStopWords​(java.util.Set<?> stopWords)

      • getMinDocFreq

        public int getMinDocFreq()

      • setMinDocFreq

        public void setMinDocFreq​(int minDocFreq)

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Query

      • equals

        public boolean equals​(java.lang.Object obj)
        Overrides:
        equals in class Query