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Lucy::Search::SortRule – Apache Lucy Documentation
Apache Lucy™

NAME

Lucy::Search::SortRule - Element of a SortSpec.

SYNOPSIS

my $sort_spec = Lucy::Search::SortSpec->new(
    rules => [
        Lucy::Search::SortRule->new( field => 'date' ),
        Lucy::Search::SortRule->new( type  => 'doc_id' ),
    ],
);

DESCRIPTION

SortRules are the building blocks used to assemble SortSpecs; each SortRule defines a single level of sorting. For example, sorting first by “category” then by score requires a SortSpec with two SortRule elements.

CONSTRUCTORS

new

my $by_title   = Lucy::Search::SortRule->new( field => 'title' );
my $by_score   = Lucy::Search::SortRule->new( type  => 'score' );
my $by_doc_id  = Lucy::Search::SortRule->new( type  => 'doc_id' );
my $reverse_date = Lucy::Search::SortRule->new(
    field   => 'date',
    reverse => 1,
);

Create a new SortRule.

  • type - Indicate whether to sort by score, field, etc. (The default is to sort by a field.)
  • field - The name of a sortable field.
  • reverse - If true, reverse the order of the sort for this rule.

METHODS

get_field

my $string = $sort_rule->get_field();

Accessor for “field” member.

get_type

my $int = $sort_rule->get_type();

Accessor for “type” member.

get_reverse

my $bool = $sort_rule->get_reverse();

Accessor for “reverse” member.

INHERITANCE

Lucy::Search::SortRule isa Clownfish::Obj.