java.lang.Object
org.apache.lucene.search.Query
org.apache.lucene.queries.mlt.MoreLikeThisQuery
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.
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionMoreLikeThisQuery
(String likeText, String[] moreLikeFields, Analyzer analyzer, String fieldName) -
Method Summary
Modifier and TypeMethodDescriptionboolean
Override and implement query instance equivalence properly in a subclass.private boolean
equalsTo
(MoreLikeThisQuery other) int
int
int
String[]
float
Set
<?> int
hashCode()
Override and implement query hash code properly in a subclass.rewrite
(IndexSearcher indexSearcher) 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) Prints a query to a string, withfield
assumed to be the default field and omitted.void
visit
(QueryVisitor visitor) Recurse through the query tree, visiting any child queries.Methods inherited from class org.apache.lucene.search.Query
classHash, createWeight, sameClassAs, toString
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Field Details
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likeText
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moreLikeFields
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analyzer
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fieldName
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percentTermsToMatch
private float percentTermsToMatch -
minTermFrequency
private int minTermFrequency -
maxQueryTerms
private int maxQueryTerms -
stopWords
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minDocFreq
private int minDocFreq
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Constructor Details
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Method Details
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rewrite
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.Callers are expected to call
rewrite
multiple times if necessary, until the rewritten query is the same as the original query.The rewrite process may be able to make use of IndexSearcher's executor and be executed in parallel if the executor is provided.
- Overrides:
rewrite
in classQuery
- Throws:
IOException
- See Also:
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toString
Description copied from class:Query
Prints a query to a string, withfield
assumed to be the default field and omitted. -
getPercentTermsToMatch
public float getPercentTermsToMatch() -
setPercentTermsToMatch
public void setPercentTermsToMatch(float percentTermsToMatch) -
getAnalyzer
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setAnalyzer
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getLikeText
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setLikeText
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getMaxQueryTerms
public int getMaxQueryTerms() -
setMaxQueryTerms
public void setMaxQueryTerms(int maxQueryTerms) -
getMinTermFrequency
public int getMinTermFrequency() -
setMinTermFrequency
public void setMinTermFrequency(int minTermFrequency) -
getMoreLikeFields
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setMoreLikeFields
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getStopWords
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setStopWords
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getMinDocFreq
public int getMinDocFreq() -
setMinDocFreq
public void setMinDocFreq(int minDocFreq) -
hashCode
public int hashCode()Description copied from class:Query
Override and implement query hash code properly in a subclass. This is required so thatQueryCache
works properly. -
equals
Description copied from class:Query
Override and implement query instance equivalence properly in a subclass. This is required so thatQueryCache
works properly.Typically a query will be equal to another only if it's an instance of the same class and its document-filtering properties are identical to those of the other instance. Utility methods are provided for certain repetitive code.
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equalsTo
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visit
Description copied from class:Query
Recurse through the query tree, visiting any child queries.
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