org.apache.lucene.classification.utils

Class NearestFuzzyQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.classification.utils.NearestFuzzyQuery

public class NearestFuzzyQuery
extends Query

Simplification of FuzzyLikeThisQuery, to be used in the context of KNN classification.

Constructor Summary

Constructors

Constructor and Description
NearestFuzzyQuery(Analyzer analyzer) Default constructor

Method Summary

Modifier and Type	Method and Description
void	addTerms(java.lang.String queryString, java.lang.String fieldName) Adds user input for "fuzzification"
boolean	equals(java.lang.Object other) Override and implement query instance equivalence properly in a subclass.
int	hashCode() Override and implement query hash code properly in a subclass.
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
java.lang.String	toString(java.lang.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

classHash, createWeight, sameClassAs, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NearestFuzzyQuery

public NearestFuzzyQuery(Analyzer analyzer)

Default constructor

Parameters:

analyzer - the analyzer used to proecss the query text

Method Detail

addTerms

public void addTerms(java.lang.String queryString,
                     java.lang.String fieldName)

Adds user input for "fuzzification"

Parameters:

queryString - The string which will be parsed by the analyzer and for which fuzzy variants will be parsed

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

hashCode

public int hashCode()

Description copied from class: Query

Override and implement query hash code properly in a subclass. This is required so that QueryCache works properly.

Specified by:

hashCode in class Query

See Also:

Query.equals(Object)

equals

public boolean equals(java.lang.Object other)

Description copied from class: Query

Override and implement query instance equivalence properly in a subclass. This is required so that QueryCache 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 that other instance. Utility methods are provided for certain repetitive code.

Specified by:

equals in class Query

See Also:

Query.sameClassAs(Object), Query.classHash()