NAME

       KiokuDB::Role::Upgrade::Data - Classes that provide their own upgrade routine.

VERSION

       version 0.57

SYNOPSIS

           with qw(KiokuDB::Role::Upgrade::Data);

           sub kiokudb_upgrade_data {
               my ( $class, %args ) = @_;

               # convert the data from the old version of the class to the new version
               # as necessary

               $args{entry}->derive(
                   class_version => our $VERSION,
                   ...
               );
           }

DESCRIPTION

       This class allows you to take control the data conversion process completely (there is
       only one handler per class, not one handler per version with this approach).

       See KiokuDB::Role::Upgrade::Handlers::Table for a more DWIM approach, and
       KiokuDB::TypeMap::Entry::MOP for more details.

AUTHOR

       Yuval Kogman <nothingmuch@woobling.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2014 by Yuval Kogman, Infinity Interactive.

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