=head1 NAME

Mail::Box::Collection - a collection of subfolders

=head1 INHERITANCE

 Mail::Box::Collection
   is a User::Identity::Collection
   is a User::Identity::Item

 Mail::Box::Collection
   is a Mail::Reporter

=head1 SYNOPSIS

=head1 DESCRIPTION

The L<Mail::Box::Collection|Mail::Box::Collection> object maintains a set L<Mail::Box::Identity|Mail::Box::Identity>
objects, each describing a the location of a single mailbox (folder).  The
collection is used by the L<Mail::Box::Manage::User|Mail::Box::Manage::User> object to administer
the folders of a single user, even if those folders are closed.

=head1 OVERLOADED

overload: B<@{}>

=over 4

See L<User::Identity::Collection/"OVERLOADED">

=back

overload: B<stringification>

=over 4

See L<User::Identity::Collection/"OVERLOADED">

=back

=head1 METHODS

=head2 Constructors

Mail::Box::Collection-E<gt>B<new>([NAME], OPTIONS)

=over 4

 Option     --Defined in     --Default
 description  User::Identity::Item  undef
 folder_type                   <from parent>
 item_type    User::Identity::Collection  Mail::Box::Identity
 log          Mail::Reporter   'WARNINGS'
 manager                       <from parent>
 name         User::Identity::Item  'folders'
 parent       User::Identity::Item  undef
 roles        User::Identity::Collection  undef
 trace        Mail::Reporter   'WARNINGS'

. description => STRING

. folder_type => CLASS

. item_type => CLASS

. log => LEVEL

. manager => OBJECT

=over 4

An L<Mail::Box::Manager|Mail::Box::Manager> OBJECT (could be a L<Mail::Box::Manage::User|Mail::Box::Manage::User>).

=back

. name => STRING

. parent => OBJECT

. roles => ROLE|ARRAY

. trace => LEVEL

=back

=head2 Error handling

$obj-E<gt>B<AUTOLOAD>

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<addReport>(OBJECT)

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<defaultTrace>([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])

Mail::Box::Collection-E<gt>B<defaultTrace>([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<errors>

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<log>([LEVEL [,STRINGS]])

Mail::Box::Collection-E<gt>B<log>([LEVEL [,STRINGS]])

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<logPriority>(LEVEL)

Mail::Box::Collection-E<gt>B<logPriority>(LEVEL)

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<logSettings>

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<notImplemented>

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<report>([LEVEL])

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<reportAll>([LEVEL])

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<trace>([LEVEL])

=over 4

See L<Mail::Reporter/"Error handling">

=back

$obj-E<gt>B<warnings>

=over 4

See L<Mail::Reporter/"Error handling">

=back

=head2 Cleanup

$obj-E<gt>B<DESTROY>

=over 4

See L<Mail::Reporter/"Cleanup">

=back

$obj-E<gt>B<inGlobalDestruction>

=over 4

See L<Mail::Reporter/"Cleanup">

=back

=head2 Attributes

$obj-E<gt>B<description>

=over 4

See L<User::Identity::Item/"Attributes">

=back

$obj-E<gt>B<folderType>([FOLDERCLASS])

=over 4

Returns the type of folder (on this location).  When specified, then
FOLDERCLASS must be a L<Mail::Box|Mail::Box> extension.

=back

$obj-E<gt>B<itemType>

=over 4

See L<User::Identity::Collection/"Attributes">

=back

$obj-E<gt>B<manager>

=over 4

The L<Mail::Box::Manager|Mail::Box::Manager> (usually a L<Mail::Box::Manage::User|Mail::Box::Manage::User> object),
which is handling the opening of folders.

=back

$obj-E<gt>B<name>([NEWNAME])

=over 4

See L<User::Identity::Item/"Attributes">

=back

$obj-E<gt>B<roles>

=over 4

See L<User::Identity::Collection/"Attributes">

=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<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>

Mail::Box::Collection-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

=head2 Maintaining roles

$obj-E<gt>B<addRole>(ROLE| ( [NAME],OPTIONS ) | ARRAY-OF-OPTIONS)

=over 4

See L<User::Identity::Collection/"Maintaining roles">

=back

$obj-E<gt>B<removeRole>(ROLE|NAME)

=over 4

See L<User::Identity::Collection/"Maintaining roles">

=back

$obj-E<gt>B<renameRole>(ROLE|OLDNAME, NEWNAME)

=over 4

See L<User::Identity::Collection/"Maintaining roles">

=back

$obj-E<gt>B<sorted>

=over 4

See L<User::Identity::Collection/"Maintaining roles">

=back

=head2 Searching

$obj-E<gt>B<find>(NAME|CODE|undef)

=over 4

See L<User::Identity::Collection/"Searching">

=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 create a $type to add this to my collection.

=over 4

Some options are specified to create a $type object, which is native to
this collection.  However, for some reason this failed.

=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: Cannot rename $name into $newname: already exists

=over 4

=back

Error: Cannot rename $name into $newname: doesn't exist

=over 4

=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

Error: Package $package does not implement $method.

=over 4

Fatal error: the specific package (or one of its superclasses) does not
implement this method where it should. This message means that some other
related classes do implement this method however the class at hand does
not.  Probably you should investigate this and probably inform the author
of the package.

=back

Error: Wrong type of role for $collection: requires a $expect but got a $type

=over 4

Each $collection groups sets of roles of one specific type ($expect).  You
cannot add objects of a different $type.

=back

=head1 SEE ALSO

This module is part of Mail-Box distribution version 2.079,
built on November 28, 2007. Website: F<http://perl.overmeer.net/mailbox/>

=head1 LICENSE

Copyrights 2001-2007 by Mark Overmeer. For other contributors see ChangeLog.

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>