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Manual Reference Pages  -  CONFIG::MVP::ASSEMBLER::WITHBUNDLES (3)

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NAME

Config::MVP::Assembler::WithBundles - a role to make assemblers expand bundles

CONTENTS

VERSION

version 2.200010

DESCRIPTION

Config::MVP::Assembler::WithBundles is a role to be composed into a Config::MVP::Assembler subclass. It allows some sections of configuration to be treated as bundles. When any section is ended, if that section represented a bundle, its bundle contents will be unrolled and will replace it in the sequence.

A package is considered a bundle if package_bundle_method returns a defined value (which is the name of a method that will be called on that package to retrieve its bundle config).



  my $method = $assembler->package_bundle_method($package);



The default implementation looks for a method called mvp_bundle_config, but package_bundle_method can be replaced with one that returns the name of a different bundle-identifying method-name.

Bundles are expanded by a call to the assembler’s replace_bundle_with_contents method, like this:



  $assembler->replace_bundle_with_contents($section, $method);



    replace_bundle_with_contents

The default replace_bundle_with_contents method deletes the section from the sequence. It then gets a description of the new sections to introduce, like this:



  my @new_config = $bundle_section->package->$method({
    name    => $bundle_section->name,
    package => $bundle_section->package,
    payload => $bundle_section->payload,
  });



(We pass a hashref rather than a section so that bundles can be expanded synthetically without having to laboriously create a new Section.)

The returned @new_config is a list of arrayrefs, each of which has three entries:



  [ $name, $package, $payload ]



Each arrayref is converted into a section in the sequence. The $payload should be an arrayref of name/value pairs to be added to the created section.

AUTHOR

Ricardo Signes <rjbs@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2015 by Ricardo Signes.

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

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perl v5.20.3 CONFIG::MVP::ASSEMBLER::WITHBUNDLES (3) 2015-03-17

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