KinoSearch1::Search::Query(3pm) User Contributed Perl Documentation KinoSearch1::Search::Query(3pm)NAME
KinoSearch1::Search::Query - base class for search queries
SYNOPSIS
# abstract base class
DESCRIPTION
Base class for queries to be performed against an invindex. TermQuery is one example.
METHODS
set_boost get_boost
$term_query_a->set_boost(2);
$boolean_query->add_clause( query => $term_query_a, occur => 'SHOULD' );
$boolean_query->add_clause( query => $term_query_b, occur => 'SHOULD' );
The boost of any Query is 1.0 by default. Setting boost to a number greater than one increases a Query's relative contribution to a score,
and setting boost to a lower number decreases the contribution.
COPYRIGHT
Copyright 2005-2010 Marvin Humphrey
LICENSE, DISCLAIMER, BUGS, etc.
See KinoSearch1 version 1.00.
perl v5.14.2 2011-11-15 KinoSearch1::Search::Query(3pm)
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KinoSearch1::Search::BooleanQuery(3pm) User Contributed Perl Documentation KinoSearch1::Search::BooleanQuery(3pm)NAME
KinoSearch1::Search::BooleanQuery - match boolean combinations of Queries
SYNOPSIS
my $bool_query = KinoSearch1::Search::BooleanQuery->new;
$bool_query->add_clause( query => $term_query, occur => 'MUST' );
my $hits = $searcher->search( query => $bool_query );
DESCRIPTION
BooleanQueries are super-Query objects which match boolean combinations of other Queries.
One way of producing a BooleanQuery is to feed a query string along the lines of "this AND NOT that" to a QueryParser object:
my $bool_query = $query_parser->parse( 'this AND NOT that' );
It's also possible to achieve the same end by manually constructing the query piece by piece:
my $bool_query = KinoSearch1::Search::BooleanQuery->new;
my $this_query = KinoSearch1::Search::TermQuery->new(
term => KinoSearch1::Index::Term->new( 'bodytext', 'this' ),
);
$bool_query->add_clause( query => $this_query, occur => 'MUST' );
my $that_query = KinoSearch1::Search::TermQuery->new(
term => KinoSearch1::Index::Term->new( 'bodytext', 'that' ),
);
$bool_query->add_clause( query => $that_query, occur => 'MUST_NOT' );
QueryParser objects and hand-rolled Queries can work together:
my $general_query = $query_parser->parse($q);
my $news_only = KinoSearch1::Search::TermQuery->new(
term => KinoSearch1::Index::Term->new( 'category', 'news' );
);
$bool_query->add_clause( query => $general_query, occur => 'MUST' );
$bool_query->add_clause( query => $news_only, occur => 'MUST' );
METHODS
new
my $bool_query = KinoSearch1::Search::BooleanQuery->new;
Constructor. Takes no arguments.
add_clause
$bool_query->add_clause(
query => $query, # required
occur => 'MUST', # default: 'SHOULD'
);
Add a clause to the BooleanQuery. Takes hash-style parameters:
o query - an object which belongs to a subclass of KinoSearch1::Search::Query.
o occur - must be one of three possible values: 'SHOULD', 'MUST', or 'MUST_NOT'.
COPYRIGHT
Copyright 2005-2010 Marvin Humphrey
LICENSE, DISCLAIMER, BUGS, etc.
See KinoSearch1 version 1.00.
perl v5.14.2 2011-11-15 KinoSearch1::Search::BooleanQuery(3pm)
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