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java.lang.Object org.apache.lucene.queryparser.classic.QueryParserBase org.apache.lucene.queryparser.classic.QueryParser org.apache.lucene.queryparser.complexPhrase.ComplexPhraseQueryParser
public class ComplexPhraseQueryParser
QueryParser which permits complex phrase query syntax eg "(john jon jonathan~) peters*".
Performs potentially multiple passes over Query text to parse any nested logic in PhraseQueries. - First pass takes any PhraseQuery content between quotes and stores for subsequent pass. All other query content is parsed as normal - Second pass parses any stored PhraseQuery content, checking all embedded clauses are referring to the same field and therefore can be rewritten as Span queries. All PhraseQuery clauses are expressed as ComplexPhraseQuery objects
This could arguably be done in one pass using a new QueryParser but here I am working within the constraints of the existing parser as a base class. This currently simply feeds all phrase content through an analyzer to select phrase terms - any "special" syntax such as * ~ * etc are not given special status
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.lucene.queryparser.classic.QueryParser |
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QueryParser.Operator |
Nested classes/interfaces inherited from class org.apache.lucene.queryparser.classic.QueryParserBase |
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QueryParserBase.MethodRemovedUseAnother |
Field Summary |
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Fields inherited from class org.apache.lucene.queryparser.classic.QueryParser |
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jj_nt, token, token_source |
Fields inherited from class org.apache.lucene.queryparser.classic.QueryParserBase |
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AND_OPERATOR, OR_OPERATOR |
Fields inherited from interface org.apache.lucene.queryparser.classic.QueryParserConstants |
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_ESCAPED_CHAR, _NUM_CHAR, _QUOTED_CHAR, _TERM_CHAR, _TERM_START_CHAR, _WHITESPACE, AND, BAREOPER, Boost, CARAT, COLON, DEFAULT, EOF, FUZZY_SLOP, LPAREN, MINUS, NOT, NUMBER, OR, PLUS, PREFIXTERM, QUOTED, Range, RANGE_GOOP, RANGE_QUOTED, RANGE_TO, RANGEEX_END, RANGEEX_START, RANGEIN_END, RANGEIN_START, REGEXPTERM, RPAREN, STAR, TERM, tokenImage, WILDTERM |
Constructor Summary | |
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ComplexPhraseQueryParser(Version matchVersion,
String f,
Analyzer a)
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Method Summary | |
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protected Query |
getFieldQuery(String field,
String queryText,
int slop)
Base implementation delegates to QueryParserBase.getFieldQuery(String,String,boolean) . |
protected Query |
getFuzzyQuery(String field,
String termStr,
float minSimilarity)
Factory method for generating a query (similar to QueryParserBase.getWildcardQuery(java.lang.String, java.lang.String) ). |
protected Query |
getRangeQuery(String field,
String part1,
String part2,
boolean startInclusive,
boolean endInclusive)
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protected Query |
getWildcardQuery(String field,
String termStr)
Factory method for generating a query. |
protected Query |
newRangeQuery(String field,
String part1,
String part2,
boolean startInclusive,
boolean endInclusive)
Builds a new TermRangeQuery instance |
protected Query |
newTermQuery(Term term)
Builds a new TermQuery instance |
Query |
parse(String query)
Parses a query string, returning a Query . |
Methods inherited from class org.apache.lucene.queryparser.classic.QueryParser |
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Clause, Conjunction, disable_tracing, enable_tracing, generateParseException, getNextToken, getToken, Modifiers, Query, ReInit, ReInit, Term, TopLevelQuery |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ComplexPhraseQueryParser(Version matchVersion, String f, Analyzer a)
Method Detail |
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protected Query getFieldQuery(String field, String queryText, int slop)
QueryParserBase
QueryParserBase.getFieldQuery(String,String,boolean)
.
This method may be overridden, for example, to return
a SpanNearQuery instead of a PhraseQuery.
getFieldQuery
in class QueryParserBase
public Query parse(String query) throws ParseException
QueryParserBase
Query
.
parse
in class QueryParserBase
query
- the query string to be parsed.
ParseException
- if the parsing failsprotected Query newTermQuery(Term term)
QueryParserBase
newTermQuery
in class QueryParserBase
term
- term
protected Query getWildcardQuery(String field, String termStr) throws ParseException
QueryParserBase
Depending on settings, prefix term may be lower-cased automatically. It will not go through the default Analyzer, however, since normal Analyzers are unlikely to work properly with wildcard templates.
Can be overridden by extending classes, to provide custom handling for wildcard queries, which may be necessary due to missing analyzer calls.
getWildcardQuery
in class QueryParserBase
field
- Name of the field query will use.termStr
- Term token that contains one or more wild card
characters (? or *), but is not simple prefix term
Query
built for the term
ParseException
- throw in overridden method to disallowprotected Query getRangeQuery(String field, String part1, String part2, boolean startInclusive, boolean endInclusive) throws ParseException
getRangeQuery
in class QueryParserBase
ParseException
protected Query newRangeQuery(String field, String part1, String part2, boolean startInclusive, boolean endInclusive)
QueryParserBase
TermRangeQuery
instance
newRangeQuery
in class QueryParserBase
field
- Fieldpart1
- minpart2
- maxstartInclusive
- true if the start of the range is inclusiveendInclusive
- true if the end of the range is inclusive
TermRangeQuery
instanceprotected Query getFuzzyQuery(String field, String termStr, float minSimilarity) throws ParseException
QueryParserBase
QueryParserBase.getWildcardQuery(java.lang.String, java.lang.String)
). Called when parser parses
an input term token that has the fuzzy suffix (~) appended.
getFuzzyQuery
in class QueryParserBase
field
- Name of the field query will use.termStr
- Term token to use for building term for the query
Query
built for the term
ParseException
- throw in overridden method to disallow
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