NAME

Wikibase::Datatype::Value::Quantity - Wikibase quantity value datatype.

SYNOPSIS

 use Wikibase::Datatype::Value::Quantity;

 my $obj = Wikibase::Datatype::Value::Quantity->new(%params);
 my $lower_bound = $obj->lower_bound;
 my $type = $obj->type;
 my $unit = $obj->unit;
 my $upper_bound = $obj->upper_bound;
 my $value = $obj->value;

DESCRIPTION

This datatype is quantity class for representation of quantity. Optionaly we can define unit of quantity.

METHODS

new

 my $obj = Wikibase::Datatype::Value::Quantity->new(%params);

Constructor.

Returns instance of object.

• lower_bound

  Lower bound of value. Value must be a positive or negative number. Parameter is optional. Default value is 0.

• unit

  Unit of instance. Default value is 1 (without unit).

• upper_bound

  Upper bound of value. Value must be a positive or negative number. Parameter is optional. Default value is 0.

• value

  Value of instance. Value must be a positive or negative number. Parameter is required.

lower_bound

 my $lower_bound = $obj->lower_bound;

Get lower bound.

Returns number.

type

 my $type = $obj->type;

Get type. This is constant 'string'.

Returns string.

unit

 my $unit = $obj->unit;

Get unit. Unit is entity (e.g. /^Q\d+$/).

Returns string.

upper_bound

 my $upper_bound = $obj->upper_bound;

Get upper bound.

Returns number.

value

 my $value = $obj->value;

Get value.

Returns string.

ERRORS

 new():
         From Mo::utils::check_number():
                 Parameter 'lower_bound' must be a number.
                 Parameter 'upper_bound' must be a number.
                 Parameter 'value' must be a number.
         From Wikibase::Datatype::Utils::check_entity():
                 Parameter 'unit' must begin with 'Q' and number after it.
         From Wikibase::Datatype::Value::new():
                 Parameter 'value' is required.
         Parameter 'lower_bound' must be less than value.
         Parameter 'upper_bound' must be greater than value.

EXAMPLE1

 use strict;
 use warnings;

 use Wikibase::Datatype::Value::Quantity;

 # Object.
 my $obj = Wikibase::Datatype::Value::Quantity->new(
         'value' => '10',
 );

 # Get type.
 my $type = $obj->type;

 # Get unit.
 my $unit = $obj->unit;

 # Get value.
 my $value = $obj->value;

 # Print out.
 print "Type: $type\n";
 if (defined $unit) {
         print "Unit: $unit\n";
 }
 print "Value: $value\n";

 # Output:
 # Type: quantity
 # Value: 10

EXAMPLE2

 use strict;
 use warnings;

 use Wikibase::Datatype::Value::Quantity;

 # Object.
 my $obj = Wikibase::Datatype::Value::Quantity->new(
         'unit' => 'Q190900',
         'value' => '10',
 );

 # Get type.
 my $type = $obj->type;

 # Get unit.
 my $unit = $obj->unit;

 # Get value.
 my $value = $obj->value;

 # Print out.
 print "Type: $type\n";
 print "Unit: $unit\n";
 print "Value: $value\n";

 # Output:
 # Type: quantity
 # Unit: Q190900
 # Value: 10

DEPENDENCIES

Error::Pure, Mo, Mo::utils, Wikibase::Datatype::Utils, Wikibase::Datatype::Value.

SEE ALSO

Wikibase::Datatype::Value

Wikibase datatypes.

REPOSITORY

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

AUTHOR

Michal Josef Špaček mailto:skim@cpan.org

http://skim.cz

LICENSE AND COPYRIGHT

© Michal Josef Špaček 2020-2022

BSD 2-Clause License

VERSION

0.16

cpanm Wikibase::Datatype

perl -MCPAN -e shell
install Wikibase::Datatype