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KinoSearch1::QueryParser::QueryParser.3pm
Langue: en
Version: 2010-10-05 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
NAME
KinoSearch1::QueryParser::QueryParser - transform a string into a Query objectSYNOPSIS
my $query_parser = KinoSearch1::QueryParser::QueryParser->new( analyzer => $analyzer, fields => [ 'bodytext' ], ); my $query = $query_parser->parse( $query_string ); my $hits = $searcher->search( query => $query );
DESCRIPTION
The QueryParser accepts search strings as input and produces Query objects, suitable for feeding into KinoSearch1::Searcher.Syntax
The following constructs are recognized by QueryParser.- *
- Boolean operators 'AND', 'OR', and 'AND NOT'.
- *
- Prepented +plus and -minus, indicating that the labeled entity should be either required or forbidden --- be it a single word, a phrase, or a parenthetical group.
- *
- Logical groups, delimited by parentheses.
- *
- Phrases, delimited by double quotes.
- *
- Field-specific terms, in the form of "fieldname:termtext". (The field specified by fieldname will be used instead of the QueryParser's default fields).
A field can also be given to a logical group, in which case it is the same as if the field had been prepended onto every term in the group. For example: "foo:(bar baz)" is the same as "foo:bar foo:baz".
METHODS
new
my $query_parser = KinoSearch1::QueryParser::QueryParser->new( analyzer => $analyzer, # required fields => [ 'bodytext' ], # required default_boolop => 'AND', # default: 'OR' );
Constructor. Takes hash-style parameters:
- *
- analyzer - An object which subclasses KinoSearch1::Analysis::Analyzer. This must be identical to the Analyzer used at index-time, or the results won't match up.
- *
- fields - the names of the fields which will be searched against. Must be supplied as an arrayref.
- *
- default_field - deprecated. Use "fields" instead.
- *
- default_boolop - two possible values: 'AND' and 'OR'. The default is 'OR', which means: return documents which match any of the query terms. If you want only documents which match all of the query terms, set this to 'AND'.
parse
my $query = $query_parser->parse( $query_string );
Turn a query string into a Query object. Depending on the contents of the query string, the returned object could be any one of several subclasses of KinoSearch1::Search::Query.
COPYRIGHT
Copyright 2005-2010 Marvin HumphreyLICENSE, DISCLAIMER, BUGS, etc.
See KinoSearch1 version 1.00.Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre