---
name: "Badger::Data::Type"
section: "3pm"
platform: "linux"
package: "libbadger-perl"
version: "0.16-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Badger::Data::Type"
---

# Badger::Data::Type(3pm)

base class for data types

## NAME

Badger::Data::Type - base class for data types

## DESCRIPTION

This module implements a base class for data types.

## CONFIGURATION OPTIONS

### name

An optional name for the data type.

### namespace

An optional namespace for the data type.

### base

An optional base data type.

### facets

An optional list of validation facets.

## METHODS

The following methods are defined in addition to those inherited from the  Badger::Base base class.

### init()

This is aliased to the **init\_type()** method.

### init\_type($config)

This is the initialisation method for a data type.  It is called automatically when a data type object is created via the **new()** method inherited from the Badger::Base base class.

### name()

Returns the name of the data type as specified via the name configuration option.  If no name was specified then an automatically generated name is returned based on the class name with the `"Badger::Data::Type"` prefix removed and all `"::"` sequences replaced with periods, e.g. a data type  `"Badger::Data::Type::Foo::Bar"` would yield a name of `"Foo.Bar"`.

### namespace()

Returns the namespace for the data type, or `"undef"` is none is defined.

### base()

Returns the base data type, or `"undef"` is none is defined.

### facets()

Returns a reference to a list of validation facets defined for the data type.

### simple()

This constant method always returns the value `0`.  Subclasses representing simple data types should re-define this to return the value `1`.

### complex()

This constant method always returns the value `0`.  Subclasses representing complex data types should re-define this to return the value `1`.

### constrain($facet, @args)

Applies a new validation facet to the data type.

### validate($value\_ref)

Validates the value passed by reference as the first argument.  It calls the `"validate()"` method of each of the validation facets in turn.

## AUTHOR

Andy Wardley \<http://wardley.org/\>

## COPYRIGHT

Copyright (C) 2008-2012 Andy Wardley.  All Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

## SEE ALSO

Badger::Base