User::Identity::Item(3p)

NAME
User::Identity::Item - general base class for User::Identity

INHERITANCE
 User::Identity::Item is extended by
   Mail::Identity
   User::Identity
   User::Identity::Archive
   User::Identity::Collection
   User::Identity::Location
   User::Identity::System

SYNOPSIS

DESCRIPTION
The "User::Identity::Item" base class is extended into useful modules: it has no use by its own.

METHODS

  Constructors

$class->new( [$name], %options )

     -Option     --Default
      description  undef
      name         <required>
      parent       undef

    description => STRING
        Free format description on the collected item.

    name => STRING
        A simple name for this item. Try to give a useful name in the context of the item time. Each time when you lookup items, you need to specify this name, so it should be unique and not to hard to handle in your program. For instance, when a person is addressed, you usually will give him/her this a nickname.

    parent => OBJECT
        The encapsulating object: the object which collects this one.

  Attributes

$obj->description()
    Free format description on this item. Please do not add any significance to the content of this field: if you are in need for an extra attribute, please contact the author of the module to implement it, or extend the object to suit your needs.

$obj->name( [$newname] )
    The new name of this item. Names are unique within a collection... a second object with the same name within any collection will destroy the already existing object with that name.

    Changing the name of an item is quite dangerous. You probably want to call User::Identity::Collection::renameRole() instead.

  Collections

$obj->add($collection, $role)
    The $role is added to the $collection. The $collection is the name of a collection, which will be created automatically with addCollection() if needed. The $collection can also be specified as existing collection object.

    The $role is anything what is acceptable to User::Identity::Collection::addRole() of the collection at hand, and is returned. $role typically is a list of parameters for one role, or a reference to an array containing these values.

    example:

      my $ui   = User::Identity->new(...);
      my $home = $ui->add(location => [home => street => '27 Roadstreet', ...] );
      my $work = $ui->add(location => work, tel => '+31-2231-342-13', ... );

      my $travel = User::Identity::Location->new(travel => ...);
      $ui->add(location => $travel);

      my $system = User::Identity::Collection::System->new(...);
      $ui->add($system => 'localhost');

$obj->addCollection( $object | <[$type], %options> )
    Add a new collection of roles to an item. This can be achieved in two ways: either create an User::Identity::Collection $object yourself and then pass that to this method, or supply all the %options needed to create such an object and it will be created for you. The object which is added is returned, and can be used for many methods directly.

    For %options, see the specific type of collection. Additional options are listed below.

     -Option--Default
      type    <required>

    type => STRING|CLASS
        The nickname of a collection class or the CLASS name itself of the object to be created. Required if an object has to be created. Predefined type nicknames are "email", "system", and "location".

    example:

      my $me   = User::Identity->new(...);
      my $locs = User::Identity::Collection::Locations->new();
      $me->addCollection($locs);

      my $email = $me->addCollection(type => 'email');
      my $email = $me->addCollection('email');

$obj->collection($name)
    In scalar context the collection object with the $name is returned. In list context, all the roles within the collection are returned.

    example:

      my @roles = $me->collection('email');        # list of collected items
      my @roles = $me->collection('email')->roles; # same of collected items
      my $coll  = $me->collection('email');        # a User::Identity::Collection

$obj->parent( [$parent] )
    Returns the parent of an Item (the enclosing item). This may return "undef" if the object is stand-alone.

$obj->removeCollection($object|$name)

$any->type()
    Returns a nice symbolic name for the type.

$obj->user()
    Go from this object to its parent, to its parent, and so on, until a User::Identity is found or the top of the object tree has been reached.

    example:

      print $email->user->fullName;

  Searching

$obj->find($collection, $role)
    Returns the object with the specified $role within the named collection. The collection can be specified as name or object.

    example:

      my $role  = $me->find(location => 'work');       # one location
      my $role  = $me->collection('location')->find('work'); # same

      my $email = $me->addCollection('email');
      $me->find($email => 'work');
      $email->find('work');   # same

DIAGNOSTICS

Error: $object is not a collection.
    The first argument is an object, but not of a class which extends User::Identity::Collection. Cast by addCollection()

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. Cast by addCollection()

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. Cast by addCollection()

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. Cast by addCollection()

Error: Each item requires a name
    You have to specify a name for each item. These names need to be unique within one collection, but feel free to give the same name to an e-mail address and a location. Cast by new()

Warning: No collection $name
    The collection with $name does not exist and can not be created. Cast by add()

Warning: Unknown option $name for a $class
    One used option is not defined. Check the manual page of the class to see which options are accepted. Cast by new()

Warning: Unknown options @names for a $class
    More than one option is not defined. Cast by new()

SEE ALSO
This module is part of User-Identity version 1.03, built on September 12, 2025. Website: http://perl.overmeer.net/CPAN/

LICENSE
For contributors see file ChangeLog.

This software is copyright (c) 2003-2025 by Mark Overmeer.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.