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Manual Reference Pages  -  USER::IDENTITY::SYSTEM (3)

.ds Aq ’


User::Identity::System - physical system of a person



   is a User::Identity::Item


 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 => ...);


The User::Identity::System object contains the description of the user’s presence on a system. The systems are collected by an User::Identity::Collection::Systems object.

Nearly all methods can return undef.

Extends DESCRIPTION in User::Identity::Item.


Extends METHODS in User::Identity::Item.


Extends Constructors in User::Identity::Item.
User::Identity::System-><B>newB>( [NAME], OPTIONS ) 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 The hostname of the described system. It is prefered to use full system names, not abbreviations. For instance, you can better use than www to avoid confusion.
location => NICKNAME|OBJECT The NICKNAME of a location which is defined for the same user. You can also specify a User::Identity::Location OBJECT.
name => STRING
os => STRING The name of the operating system which is run on the server. It is adviced to use the names as used by Perl’s $^O variable. See the perlvar man-page for this variable, and perlport for the possible values.
parent => OBJECT
password => STRING 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.
username => STRING The username to be used to login to this host.


Extends Attributes in User::Identity::Item.
$obj-><B>descriptionB>() Inherited, see Attributes in User::Identity::Item
$obj-><B>locationB>() 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.
$obj-><B>nameB>( [NEWNAME] ) Inherited, see Attributes in User::Identity::Item


Extends Collections in User::Identity::Item.
$obj-><B>addB>(COLLECTION, ROLE) Inherited, see Collections in User::Identity::Item
$obj-><B>addCollectionB>(OBJECT | ([TYPE], OPTIONS)) Inherited, see Collections in User::Identity::Item
$obj-><B>collectionB>(NAME) Inherited, see Collections in User::Identity::Item
$obj-><B>findB>(COLLECTION, ROLE) Inherited, see Collections in User::Identity::Item
$obj-><B>parentB>( [PARENT] ) Inherited, see Collections in User::Identity::Item
$obj-><B>removeCollectionB>(OBJECT|NAME) Inherited, see Collections in User::Identity::Item
User::Identity::System-><B>typeB>() Inherited, see Collections in User::Identity::Item
$obj-><B>userB>() Inherited, see Collections in User::Identity::Item


Error: $object is not a collection. The first argument is an object, but not of a class which extends User::Identity::Collection.
Error: Cannot load collection module for $type ($class). 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.
Error: Creation of a collection via $class failed. The $class did compile, but it was not possible to create an object of that class using the options you specified.
Error: Don’t know what type of collection you want to add. 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.
Warning: No collection $name The collection with $name does not exist and can not be created.


This module is part of User-Identity distribution version 0.94, built on January 24, 2014. Website:


Copyrights 2003-2014 by [Mark Overmeer <>]. 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

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perl v5.20.3 USER::IDENTITY::SYSTEM (3) 2014-01-24

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