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Wikibase-Datatype-Query-0.05
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/ Wikibase::Datatype::Query

NAME

Wikibase::Datatype::Query - Query class on Wikibase item.

SYNOPSIS

use Wikibase::Datatype::Query;

my $obj = Wikibase::Datatype::Query->new;
my $res = $obj->query($obj, $query_string);
my @res = $obj->query($obj, $query_string);
my $res = $obj->query_item($item_obj, $query_string);
my @res = $obj->query_item($item_obj, $query_string);
my $res = $obj->query_lexeme($lexeme_obj, $query_string);
my @res = $obj->query_lexeme($lexeme_obj, $query_string);

METHODS

new

my $obj = Wikibase::Datatype::Query->new;

Constructor.

  • deprecated

    Flag which controls query of deprecated values. Zero (0) means no deprecated values in result.

    Default value is 0.

Returns instance of object.

query

my $res = $obj->query($obj, $query_string);
my @res = $obj->query($obj, $query_string);

Query Wikibase::Datatype object for value. Supported $obj objects are Wikibase::Datatype::Item, Wikibase::Datatype::Lexeme and Wikibase::Datatype::Mediainfo.

Returns value or undef in scalar context. Returns list of values in array context.

query_item

my $res = $obj->query($item_obj, $query_string);
my @res = $obj->query_item($item_obj, $query_string);

Query Wikibase::Datatype::Item item for value.

Possible $query_string values are:

P\d+

For property value.

alias:.*

For alias value.

description:.*

For description value.

label:.*

For label value.

statement:P\d+

For full property statements.

Returns value or undef in scalar context. Returns list of values in array context.

query_lexeme

my $res = $obj->query_lexeme($lexeme_obj, $query_string);
my @res = $obj->query_lexeme($lexeme_obj, $query_string);

Query Wikibase::Datatype::Lexeme item for value.

Possible $query_string values are:

P\d+

For property value.

form:P\d+

For form property value.

sense:P\d+

For sense property value.

Returns value or undef in scalar context. Returns list of values in array context.

ERRORS

new():
        From Class::Utils::set_params():
                Unknown parameter '%s'.

query():
        Parameter 'item' is required.
        Parameter 'item' must be a 'Wikibase::Datatype::Item' object.

query_item():
        Item is required.
        Item must be a 'Wikibase::Datatype::Item' or 'Wikibase::Datatype::Mediainfo' object.
        Unsupported query string '%s'.

query_lexeme():
        Item must be a 'Wikibase::Datatype::Lexeme' object.
        Lexeme is required.
        Unsupported query string '%s'.

EXAMPLE1

use strict;
use warnings;

use Test::Shared::Fixture::Wikibase::Datatype::Item::Wikidata::Dog;
use Wikibase::Datatype::Query;

my $obj = Wikibase::Datatype::Query->new;

my $item = Test::Shared::Fixture::Wikibase::Datatype::Item::Wikidata::Dog->new;

my $ret = $obj->query_item($item, 'P31');

print "Query for P31 property on Test::Shared::Fixture::Wikibase::Datatype::Item::Wikidata::Dog:\n";
print $ret."\n";

# Output like:
# Query for P31 property on Test::Shared::Fixture::Wikibase::Datatype::Item::Wikidata::Dog:
# Q55983715

EXAMPLE2

use strict;
use warnings;

use Test::Shared::Fixture::Wikibase::Datatype::Lexeme::Wikidata::DogCzechNoun;
use Wikibase::Datatype::Query;

my $obj = Wikibase::Datatype::Query->new;

my $item = Test::Shared::Fixture::Wikibase::Datatype::Lexeme::Wikidata::DogCzechNoun->new;

my $ret = $obj->query_lexeme($item, 'P5185');

print "Query for P5185 property on Test::Shared::Fixture::Wikibase::Datatype::Lexeme::Wikidata::DogCzechNoun:\n";
print $ret."\n";

# Output like:
# Query for P5185 property on Test::Shared::Fixture::Wikibase::Datatype::Lexeme::Wikidata::DogCzechNoun:
# Q499327

DEPENDENCIES

Class::Utils, Error::Pure, Scalar::Util.

SEE ALSO

Wikibase::Datatype

Wikibase datatypes.

REPOSITORY

https://github.com/michal-josef-spacek/Wikibase-Datatype-Query

AUTHOR

Michal Josef Špaček mailto:skim@cpan.org

http://skim.cz

LICENSE AND COPYRIGHT

© 2022-2025 Michal Josef Špaček

BSD 2-Clause License

VERSION

0.05