config::model::debian::dependency(3pm) [debian man page]

Config::Model::Debian::Dependency(3pm)			User Contributed Perl Documentation		    Config::Model::Debian::Dependency(3pm)

NAME

       Config::Model::Debian::Dependency - Checks Debian dependency declarations

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 => [
	       Depends => {
		   'type'	=> 'leaf',
		   'value_type' => 'uniline',
		   class => 'Config::Model::Debian::Dependency',
	       },
	   ],
	) ;

	my $inst = $model->instance(root_class_name => 'MyClass' );

	my $root = $inst->config_root ;

	$root->load( 'Depends="libc6 ( >= 1.0 )"') ;
	# Connecting to qa.debian.org to check libc6 versions. Please wait ...
	# Warning in 'Depends' value 'libc6 ( >= 1.0 )': unnecessary
	# versioned dependency: >= 1.0. Debian has lenny-security ->
	# 2.7-18lenny6; lenny -> 2.7-18lenny7; squeeze-security ->
	# 2.11.2-6+squeeze1; squeeze -> 2.11.2-10; wheezy -> 2.11.2-10; sid
	# -> 2.11.2-10; sid -> 2.11.2-11;

DESCRIPTION

       This class is derived from Config::Model::Value. Its purpose is to check the value of a Debian package dependency for the following:

       o   syntax as described in http://www.debian.org/doc/debian-policy/ch-relationships.html

       o   Whether the version specified with ">" or ">=" is necessary.  This module will check with Debian server whether older versions can be
	   found in Debian old-stable or not. If no older version can be found, a warning will be issued. Note a warning will also be sent if the
	   package is not found on madison and if the package is not virtual.

       o   Whether a Perl library is dual life. In this case the dependency is checked according to Debian Perl policy <http://pkg-
	   perl.alioth.debian.org/policy.html#debian_control_handling>.  Because Debian auto-build systems (buildd) will use the first available
	   alternative, the dependency should be in the form :

	   o   "perl (>= 5.10.1) | libtest-simple-perl (>= 0.88)" when the required perl version is available in sid. ".

	   o   "libcpan-meta-perl | perl (>= 5.13.10)" when the Perl version is not available in sid

Cache
       Queries to Debian server are cached in "~/.config_model_depend_cache" for about one month.

BUGS

       o   Virtual package names are found scanning local apt cache. Hence an unknown package on your system may a virtual package on another
	   system.

       o   More advanced checks can probably be implemented. The author is open to new ideas. He's even more open to patches (with tests).

AUTHOR

       Dominique Dumont, ddumont [AT] cpan [DOT] org

SEE ALSO

       Config::Model, Config::Model::Value, Memoize, Memoize::Expire

perl v5.14.2							    2012-11-09				    Config::Model::Debian::Dependency(3pm)

Config::Model::Report(3pm)				User Contributed Perl Documentation				Config::Model::Report(3pm)

NAME

       Config::Model::Report - Reports data from config tree

VERSION

       version 2.021

SYNOPSIS

	use Config::Model;
	use Log::Log4perl qw(:easy);
	Log::Log4perl->easy_init($WARN);

	# define configuration tree object
	my $model = Config::Model->new;
	$model->create_config_class(
	   name    => "Foo",
	   element => [
	       [qw/foo bar/] => {
		   type       => 'leaf',
		   value_type => 'string'
	       },
	   ],
	   description => [
	       foo => 'some foo explanation',
	       bar => 'some bar explanation',
	   ]
	);

	$model->create_config_class(
	   name => "MyClass",

	   element => [

	       [qw/foo bar/] => {
		   type       => 'leaf',
		   value_type => 'string'
	       },
	       my_enum => {
		   type       => 'leaf',
		   value_type => 'enum',
		   choice     => [qw/A B C/],
		   help       => {
		       A => 'first letter',
		       B => 'second letter',
		       C => 'third letter',
		   },
		   description => 'some letters',
	       },
	       hash_of_nodes => {
		   type       => 'hash',     # hash id
		   index_type => 'string',
		   cargo      => {
		       type		 => 'node',
		       config_class_name => 'Foo'
		   },
	       },
	   ],
	);

	my $inst = $model->instance(root_class_name => 'MyClass' );

	my $root = $inst->config_root ;

	# put data
	my $step = 'foo=FOO my_enum=B hash_of_nodes:fr foo=bonjour -
	  hash_of_nodes:en foo=hello ';
	$root->load( step => $step );

	print $root->report ;
	#  foo = FOO
	#
	#  my_enum = B
	#	  DESCRIPTION: some letters
	#	  SELECTED: second letter
	#
	# hash_of_nodes:en foo = hello
	#	  DESCRIPTION: some foo explanation
	#
	# hash_of_nodes:fr foo = bonjour
	#	  DESCRIPTION: some foo explanation

DESCRIPTION

       This module is used directly by Config::Model::Node to provide a human readable report of the configuration. This report includes the
       configuration values and (if provided by the model) the description of the configuration item and their effect.

       A "report" will show "all" configuration items. An "audit" will show only configuration items which are different from their default value.

CONSTRUCTOR

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

Methods
   report
       Returns a string containing the configuration values and (if provided by the model) the description of the configuration item and their
       effect.

       Parameters are:

       audit
	   Set to 1 to report only configuration data different from default values. Default is 0.

       node
	   Reference to the Config::Model::Node object that is dumped. All nodes and leaves attached to this node are also dumped.

AUTHOR

       Dominique Dumont, (ddumont at cpan dot org)

SEE ALSO

       Config::Model,Config::Model::Node,Config::Model::Walker

perl v5.14.2							    2012-11-09						Config::Model::Report(3pm)