---
name: "MooseX::Storage::Engine"
section: "3pm"
platform: "linux"
package: "libmoosex-storage-perl"
version: "0.53-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/MooseX::Storage::Engine"
---

# MooseX::Storage::Engine(3pm)

The meta-engine to handle collapsing and expanding objects

## NAME

MooseX::Storage::Engine - The meta-engine to handle collapsing and expanding objects

## VERSION

version 0.53

## DESCRIPTION

There really aren't any major user serviceable parts here. However the typical use case is adding new non-Moose classes to the type registry for serialization. Here is an example of this for DateTime objects. This assumes a `"DateTime"` type has been registered.

```
    MooseX::Storage::Engine->add_custom_type_handler(
        'DateTime' => (
            expand   => sub { DateTime::Format::ISO8601->new->parser_datetime(shift) },
            collapse => sub { (shift)->iso8601 },
        )
    );
```

## METHODS

### Accessors

- **class**

  - **object**

  - **storage**

  - **seen**

  ### API

- **expand\_object**

  - **collapse\_object**

  ### ...

- **collapse\_attribute**

  - **collapse\_attribute\_value**

  - **expand\_attribute**

  - **expand\_attribute\_value**

  - **check\_for\_cycle\_in\_collapse**

  - **check\_for\_cycle\_in\_expansion**

  - **map\_attributes**

  ### Type Constraint Handlers

- **find\_type\_handler ($type)**

  - **find\_type\_handler\_for ($name)**

  - **add\_custom\_type\_handler ($name, %handlers)**

  - **remove\_custom\_type\_handler ($name)**

  ## SUPPORT

Bugs may be submitted through the RT bug tracker \<https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-Storage\> (or bug-MooseX-Storage@rt.cpan.org \<mailto:bug-MooseX-Storage@rt.cpan.org\>).

There is also a mailing list available for users of this distribution, at \<http://lists.perl.org/list/moose.html\>.

There is also an irc channel available for users of this distribution, at `"#moose"` on `"irc.perl.org"` \<irc://irc.perl.org/#moose\>.

## AUTHORS

- •

  Chris Prather \<chris.prather@iinteractive.com\>

- •

  Stevan Little \<stevan.little@iinteractive.com\>

- •

  יובל קוג'מן (Yuval Kogman) \<nothingmuch@woobling.org\>

## COPYRIGHT AND LICENSE

This software is copyright (c) 2007 by Infinity Interactive, Inc.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.