QueryParser

Alternative form of QueryParser.Operator.AND

Alternative form of QueryParser.Operator.OR

Next token.

Current token.

Generated Token Manager.

Constructs a query parser.

Constructor with user supplied CharStream.

Constructor with generated Token Manager.

Reinitialise.

Reinitialise.

Disable tracing.

Enable tracing.

Returns a String where those characters that QueryParser expects to be escaped are escaped by a preceding \.

Generate ParseException.

Returns the date resolution that is used by RangeQueries for the given field. Returns null, if no default or field specific date resolution has been set for the given field.

Gets implicit operator setting, which will be either AND_OPERATOR or OR_OPERATOR.

Get the minimal similarity for fuzzy queries.

Get the prefix length for fuzzy queries.

Returns current locale, allowing access by subclasses.

Get the next Token.

Gets the default slop for phrases.

Get the specific Token.

Command line tool to test QueryParser, using SimpleAnalyzer. Usage:
java org.apache.lucene.queryParser.QueryParser <input>

Parses a query string, returning a Query.

Set to true to allow leading wildcard characters.

When set, * or ? are allowed as the first character of a PrefixQuery and WildcardQuery. Note that this can produce very slow queries on big indexes.

Default: false.

Sets the default date resolution used by RangeQueries for fields for which no specific date resolutions has been set. Field specific resolutions can be set with setDateResolution(String, DateTools.Resolution).

Sets the date resolution used by RangeQueries for a specific field.

Sets the boolean operator of the QueryParser. In default mode (OR_OPERATOR) terms without any modifiers are considered optional: for example capital of Hungary is equal to capital OR of OR Hungary.
In AND_OPERATOR mode terms are considered to be in conjunction: the above mentioned query is parsed as capital AND of AND Hungary

Set to true to enable position increments in result query.

When set, result phrase and multi-phrase queries will be aware of position increments. Useful when e.g. a StopFilter increases the position increment of the token that follows an omitted token.

Default: false.

Set the minimum similarity for fuzzy queries. Default is 0.5f.

Set the prefix length for fuzzy queries. Default is 0.

Set locale used by date range parsing.

Whether terms of wildcard, prefix, fuzzy and range queries are to be automatically lower-cased or not. Default is true.

By default QueryParser uses CONSTANT_SCORE_AUTO_REWRITE_DEFAULT when creating a PrefixQuery, WildcardQuery or RangeQuery. This implementation is generally preferable because it a) Runs faster b) Does not have the scarcity of terms unduly influence score c) avoids any "TooManyBooleanClauses" exception. However, if your application really needs to use the old-fashioned BooleanQuery expansion rewriting and the above points are not relevant then use this to change the rewrite method.

Sets the default slop for phrases. If zero, then exact phrase matches are required. Default value is zero.

Sets the collator used to determine index term inclusion in ranges for RangeQuerys.

WARNING: Setting the rangeCollator to a non-null collator using this method will cause every single index Term in the Field referenced by lowerTerm and/or upperTerm to be examined. Depending on the number of index Terms in this Field, the operation could be very slow.

Factory method for generating query, given a set of clauses. By default creates a boolean query composed of clauses passed in. Can be overridden by extending classes, to modify query being returned.

Factory method for generating query, given a set of clauses. By default creates a boolean query composed of clauses passed in. Can be overridden by extending classes, to modify query being returned.

Base implementation delegates to getFieldQuery(String, String). This method may be overridden, for example, to return a SpanNearQuery instead of a PhraseQuery.

Factory method for generating a query (similar to getWildcardQuery(String, String)). Called when parser parses an input term token that has the fuzzy suffix (~) appended.

Factory method for generating a query (similar to getWildcardQuery(String, String)). Called when parser parses an input term token that uses prefix notation; that is, contains a single '*' wildcard character as its last character. Since this is a special case of generic wildcard term, and such a query can be optimized easily, this usually results in a different query object.

Depending on settings, a 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 wild card queries, which may be necessary due to missing analyzer calls.

Factory method for generating a query. Called when parser parses an input term token that contains one or more wildcard characters (? and *), but is not a prefix term token (one that has just a single * character at the end)

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.

Builds a new BooleanClause instance

Builds a new BooleanQuery instance

Builds a new FuzzyQuery instance

Builds a new MatchAllDocsQuery instance

Builds a new MultiPhraseQuery instance

Builds a new PhraseQuery instance

Builds a new PrefixQuery instance

Builds a new TermRangeQuery instance

Builds a new TermQuery instance

Builds a new WildcardQuery instance