=head1 NAME
User::Identity::System - physical system of a person
=head1 INHERITANCE
User::Identity::System
is a User::Identity::Item
=head1 SYNOPSIS
use User::Identity;
use User::Identity::System;
my $me = User::Identity->new(...);
my $server = User::Identity::System->new(...);
$me->add(system => $server);
# Simpler
use User::Identity;
my $me = User::Identity->new(...);
my $addr = $me->add(system => ...);
=head1 DESCRIPTION
The C<User::Identity::System> object contains the description of the
user's presence on a system. The systems are collected
by an L<User::Identity::Collection::Systems|User::Identity::Collection::Systems> object.
Nearly all methods can return undef.
=head1 METHODS
=head2 Constructors
User::Identity::System-E<gt>B<new>([NAME], OPTIONS)
=over 4
Create a new system. You can specify a name as first argument, or
in the OPTION list. Without a specific name, the organization is used as name.
Option --Defined in --Default
description User::Identity::Item undef
hostname 'localhost'
location undef
name User::Identity::Item <required>
os undef
parent User::Identity::Item undef
password undef
username undef
. description => STRING
. hostname => DOMAIN
=over 4
The hostname of the described system. It is prefered to use full
system names, not abbreviations. For instance, you can better use
C<www.tux.aq> than C<www> to avoid confusion.
=back
. location => NICKNAME|OBJECT
=over 4
The NICKNAME of a location which is defined for the same user. You can
also specify a L<User::Identity::Location|User::Identity::Location> OBJECT.
=back
. name => STRING
. os => STRING
=over 4
The name of the operating system which is run on the server. It is
adviced to use the names as used by Perl's C<$^O> variable. See the
perlvar man-page for this variable, and perlport for the possible
values.
=back
. parent => OBJECT
. password => STRING
=over 4
The password to be used to login. This password must be un-encoded:
directly usable. Be warned that storing un-encoded passwords is a
high security list.
=back
. username => STRING
=over 4
The username to be used to login to this host.
=back
=back
=head2 Attributes
$obj-E<gt>B<description>
=over 4
See L<User::Identity::Item/"Attributes">
=back
$obj-E<gt>B<hostname>
=over 4
=back
$obj-E<gt>B<location>
=over 4
Returns the object which describes to which location this system relates.
The location may be used to find the name of the organization involved, or
to create a signature. If no location is specified, undef is returned.
=back
$obj-E<gt>B<name>([NEWNAME])
=over 4
See L<User::Identity::Item/"Attributes">
=back
$obj-E<gt>B<os>
=over 4
=back
$obj-E<gt>B<password>
=over 4
=back
$obj-E<gt>B<username>
=over 4
=back
=head2 Collections
$obj-E<gt>B<add>(COLLECTION, ROLE)
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<addCollection>(OBJECT | ([TYPE], OPTIONS))
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<collection>(NAME)
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<find>(COLLECTION, ROLE)
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<parent>([PARENT])
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<removeCollection>(OBJECT|NAME)
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<type>
User::Identity::System-E<gt>B<type>
=over 4
See L<User::Identity::Item/"Collections">
=back
$obj-E<gt>B<user>
=over 4
See L<User::Identity::Item/"Collections">
=back
=head1 DIAGNOSTICS
Error: $object is not a collection.
=over 4
The first argument is an object, but not of a class which extends
L<User::Identity::Collection|User::Identity::Collection>.
=back
Error: Cannot load collection module for $type ($class).
=over 4
Either the specified $type does not exist, or that module named $class returns
compilation errors. If the type as specified in the warning is not
the name of a package, you specified a nickname which was not defined.
Maybe you forgot the 'require' the package which defines the nickname.
=back
Error: Creation of a collection via $class failed.
=over 4
The $class did compile, but it was not possible to create an object
of that class using the options you specified.
=back
Error: Don't know what type of collection you want to add.
=over 4
If you add a collection, it must either by a collection object or a
list of options which can be used to create a collection object. In
the latter case, the type of collection must be specified.
=back
Warning: No collection $name
=over 4
The collection with $name does not exist and can not be created.
=back
=head1 SEE ALSO
This module is part of User-Identity distribution version 0.93,
built on December 24, 2009. Website: F<http://perl.overmeer.net/userid/>
=head1 LICENSE
Copyrights 2003,2004,2007-2009 by Mark Overmeer <perl@overmeer.net>. For other contributors see Changes.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
See F<http://www.perl.com/perl/misc/Artistic.html>