NAME¶

Config::Model::DumpAsData - Dump configuration content as a perl data structure

VERSION¶

version 2.021

SYNOPSIS¶

 use Config::Model ;
 use Log::Log4perl qw(:easy) ;
 use Data::Dumper ;
 Log::Log4perl->easy_init($WARN);
 # define configuration tree object
 my $model = Config::Model->new ;
 $model ->create_config_class (
    name => "MyClass",
    element => [ 
        [qw/foo bar/] => { 
            type => 'leaf',
            value_type => 'string'
        },
        baz => { 
            type => 'hash',
            index_type => 'string' ,
            cargo => {
                type => 'leaf',
                value_type => 'string',
            },
        },
        
    ],
 ) ;
 my $inst = $model->instance(root_class_name => 'MyClass' );
 my $root = $inst->config_root ;
 # put some data in config tree the hard way
 $root->fetch_element('foo')->store('yada') ;
 $root->fetch_element('bar')->store('bla bla') ;
 $root->fetch_element('baz')->fetch_with_id('en')->store('hello') ;
 # put more data the easy way
 my $step = 'baz:fr=bonjour baz:hr="dobar dan"';
 $root->load( step => $step ) ;
 print Dumper($root->dump_as_data);
 # $VAR1 = {
 #         'bar' => 'bla bla',
 #         'baz' => {
 #                    'en' => 'hello',
 #                    'fr' => 'bonjour',
 #                    'hr' => 'dobar dan'
 #                  },
 #         'foo' => 'yada'
 #       };

DESCRIPTION¶

This module is used directly by Config::Model::Node to dump the content of a configuration tree in perl data structure. The perl data structure is a hash of hash. Only CheckList content will be stored in an array ref. Note that undefined values are skipped for list element. I.e. if a list element contains "('a',undef,'b')", the data structure will contain 'a','b'.

CONSTRUCTOR¶

new ( )¶

No parameter. The constructor should be used only by Config::Model::Node.

Methods¶

dump_as_data(...)¶

Return a perl data structure Parameters are:

node

Reference to a Config::Model::Node object. Mandatory

full_dump

Also dump default values in the data structure. Useful if the dumped configuration data will be used by the application. (default is yes)

skip_auto_write

Skip node that have a "perl write" capability in their model. See Config::Model::AutoRead.

auto_vivify

Scan and create data for nodes elements even if no actual data was stored in them. This may be useful to trap missing mandatory values.

ordered_hash_as_list

By default, ordered hash (i.e. the order of the keys are important) are dumped as Perl list. This is the faster way to dump such hashed while keeping the key order. But it's the less readable way.

 

When this parameter is 1 (default), the ordered hash is dumped as a list:

 

  [ A => 'foo', B => 'bar', C => 'baz' ]
    

 

When this parameter is set as 0, the ordered hash is dumped with a special key that specifies the order of keys. E.g.:

 

  { __order => [ 'A', 'B', 'C' ] ,
    B => 'bar', A => 'foo', C => 'baz' 
  }
    

Methods¶

dump_annotations_as_pod(...)¶

Return a string formatted in pod (See perlpod) with the annotations. Parameters are:

node

Reference to a Config::Model::Node object. Mandatory

experience

master, advanced or beginner

check_list

Yes, no or skip

AUTHOR¶

Dominique Dumont, (ddumont at cpan dot org)

SEE ALSO¶

Config::Model,Config::Model::Node,Config::Model::ObjTreeScanner