NAME

       Config::Model::Value::LayeredInclude - Include a sub layer configuration

VERSION

       version 2.152

SYNOPSIS

           # in a model declaration:
           'element' => [
             'include' => {
               'class' => 'Config::Model::Value::LayeredInclude',

               # usual Config::Model::Value parameters
               'type' => 'leaf',
               'value_type' => 'uniline',
               'convert' => 'lc',
               'summary' => 'Include file for cascaded configuration',
               'description' => 'To support multiple variants of ...'
             },
           ]

DESCRIPTION

       This class inherits from Config::Model::Value. It overrides _store to trigger a refresh of
       layered value when a value is changed. I.e. changing this value trigger a reload of the
       referred configuration file which values are used as default value. This class was
       designed to cope with multistrap <http://wiki.debian.org/Multistrap> configuration.

   CAUTION
       A configuration file can support 2 kinds of include:

       •   Layered include which sets default values like multistrap or ssh. These includes are
           read-only.

       •   Real includes like "apache". In this cases modified configuration items can be written
           to included files.

       This class works only with the first type

AUTHOR

       Dominique Dumont

COPYRIGHT AND LICENSE

       This software is Copyright (c) 2005-2022 by Dominique Dumont.

       This is free software, licensed under:

         The GNU Lesser General Public License, Version 2.1, February 1999