VERSION
version 2.087SYNOPSIS
use Config::Model ;
# 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 $steps = 'baz:fr=bonjour baz:hr="dobar dan"';
$root->load( steps => $steps ) ;
# dump only customized data
print $root->dump_tree;
DESCRIPTION
This module is used directly by Config::Model::Node to serialize configuration data in a compact (but readable) string.The serialization can be done in standard mode where only customized values are dumped in the string. I.e. only data modified by the user are dumped.
The other mode is "full_dump" mode where all all data, including default values, are dumped.
The serialized string can be used by Config::Model::Loader to store the data back into a configuration tree.
Note that undefined values are skipped for list element. I.e. if a list element contains "('a',undef,'b')", the dump then contains 'a','b'.
CONSTRUCTOR
new ( )
No parameter. The constructor should be used only by Config::Model::Node.Methods
dump_tree
Return a string that contains a dump of the object tree with all the values. This string follows the convention defined by Config::Model::Loader.The serialized string can be used by Config::Model::Loader to store the data back into a configuration tree.
Parameters are:
- mode ( full | preset | custom )
-
"full" dumps all configuration data including default
values.
"preset" dumps only value entered in preset mode.
By default, the dump contains only data modified by the user (i.e. "custom" data that differ from default or preset values).
- node
- Reference to the Config::Model::Node object that is dumped. All nodes and leaves attached to this node are also dumped.
- skip_auto_write ( <backend_name> )
-
Skip node that have a write capability matching "backend_name" in
their model. See Config::Model::BackendMgr.
This option must be used when using Dumper to write back configuration data. When a configuration model contains several backends (one at the tree root and others in tree nodes), setting this option ensure that the ``root'' configuration file does not contain data duplicated in configuration file of others tree nodes.
- 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. (default: 0)
- check
- Check value before dumping. Valid check are 'yes', 'no' and 'skip'.
AUTHOR
Dominique Dumont, (ddumont at cpan dot org)AUTHOR
Dominique DumontCOPYRIGHT AND LICENSE
This software is Copyright (c) 2005-2016 by Dominique Dumont.This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999