org.apache.lucene.queryParser
Class ThezaurusQueryParser

java.lang.Object
  org.apache.lucene.queryParser.QueryParser
      org.apache.lucene.queryParser.ThezaurusQueryParser

All Implemented Interfaces:

org.apache.lucene.queryParser.QueryParserConstants

public class ThezaurusQueryParser

extends org.apache.lucene.queryParser.QueryParser

implements org.apache.lucene.queryParser.QueryParserConstants

A QueryParser, which supports searching using synonyms.

It defines the #getFieldQuery(String, Analyzer, String) (method called when single Term is encountered in query) in manner similar to QueryParser. If a Term is encountered, it is replaced with synonyms separated with OR.

Author:

Robert Novotny

Field Summary

Fields inherited from class org.apache.lucene.queryParser.QueryParser

DEFAULT_OPERATOR_AND, DEFAULT_OPERATOR_OR, jj_nt, lookingAhead, token, token_source

Fields inherited from interface org.apache.lucene.queryParser.QueryParserConstants

_ESCAPED_CHAR, _NUM_CHAR, _TERM_CHAR, _TERM_START_CHAR, _WHITESPACE, AND, Boost, CARAT, COLON, DEFAULT, EOF, FUZZY, LPAREN, MINUS, NOT, NUMBER, OR, PLUS, PREFIXTERM, QUOTED, RangeEx, RANGEEX_END, RANGEEX_GOOP, RANGEEX_QUOTED, RANGEEX_START, RANGEEX_TO, RangeIn, RANGEIN_END, RANGEIN_GOOP, RANGEIN_QUOTED, RANGEIN_START, RANGEIN_TO, RPAREN, SLOP, TERM, tokenImage, WILDTERM

Constructor Summary

ThezaurusQueryParser(org.apache.lucene.queryParser.CharStream stream)
Constructor delegating the the QueryParser class.

ThezaurusQueryParser(org.apache.lucene.queryParser.QueryParserTokenManager tm)
Constructor delegating the the QueryParser class.

ThezaurusQueryParser(java.lang.String f, org.apache.lucene.analysis.Analyzer a)
Constructor delegating the the QueryParser class.

Method Summary

ThezaurusEngine	getThezaurusEngine() Returns associated ThezaurusEngine.
boolean	isUsingSynonyms() Detects, whether this QueryParser is using thezaurus engine.
void	setThezaurusEngine(ThezaurusEngine thezaurusEngine) Associated given ThezaurusEngine with this ThezaurusQueryParser.
void	setUsingSynonyms(boolean isUsingSynonyms) Toggles thezaurus engine on or off while parsing terms.

Methods inherited from class org.apache.lucene.queryParser.QueryParser

Clause, Conjunction, disable_tracing, enable_tracing, generateParseException, getLocale, getLowercaseWildcardTerms, getNextToken, getOperator, getPhraseSlop, getToken, main, Modifiers, parse, parse, Query, ReInit, ReInit, setLocale, setLowercaseWildcardTerms, setOperator, setPhraseSlop, Term

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ThezaurusQueryParser

public ThezaurusQueryParser(java.lang.String f,
                            org.apache.lucene.analysis.Analyzer a)

Constructor delegating the the QueryParser class.

Parameters:

f - the default field for query terms.

a - used to find terms in the query text.

ThezaurusQueryParser

public ThezaurusQueryParser(org.apache.lucene.queryParser.CharStream stream)

Constructor delegating the the QueryParser class.

ThezaurusQueryParser

public ThezaurusQueryParser(org.apache.lucene.queryParser.QueryParserTokenManager tm)

Constructor delegating the the QueryParser class.

Method Detail

isUsingSynonyms

public boolean isUsingSynonyms()

Detects, whether this QueryParser is using thezaurus engine.

setUsingSynonyms

public void setUsingSynonyms(boolean isUsingSynonyms)

Toggles thezaurus engine on or off while parsing terms.

getThezaurusEngine

public ThezaurusEngine getThezaurusEngine()

Returns associated ThezaurusEngine.

setThezaurusEngine

public void setThezaurusEngine(ThezaurusEngine thezaurusEngine)

Associated given ThezaurusEngine with this ThezaurusQueryParser.

Parameters:

thezaurusEngine -