Mail::Message::Head::Delayed(3)

NAME
Mail::Message::Head::Delayed - a not-read header of a Mail::Message

INHERITANCE
 Mail::Message::Head::Delayed realizes a Mail::Message::Head::Complete

 Mail::Message::Head::Delayed
   is a Mail::Message::Head
   is a Mail::Reporter

SYNOPSIS
  my $delayed = Mail::Message::Head::Delayed->new(...)
  $delayed->isa('Mail::Message::Head')  # true
  $delayed->guessBodySize               # undef
  $delayed->isDelayed                   # true

DESCRIPTION
This object is used as place-holder, to be replaced by a Mail::Message::Head when someone accesses the header of a message.

Extends "DESCRIPTION" in Mail::Message::Head.

OVERLOADED
Extends "OVERLOADED" in Mail::Message::Head.

overload: "" stringifaction
    Inherited, see "OVERLOADED" in Mail::Message::Head

overload: bool true/false
    Inherited, see "OVERLOADED" in Mail::Message::Head

METHODS
Extends "METHODS" in Mail::Message::Head.

  Constructors
Extends "Constructors" in Mail::Message::Head.

$class->build($fields)
    You cannot create a delayed header with fields. Improves base, see "Constructors" in Mail::Message::Head

$class->new(%options)
    Inherited, see "Constructors" in Mail::Message::Head

  Attributes
Extends "Attributes" in Mail::Message::Head.

  The header
Extends "The header" in Mail::Message::Head.

$obj->isDelayed()
    Inherited, see "The header" in Mail::Message::Head

$obj->isEmpty()
    Inherited, see "The header" in Mail::Message::Head

$obj->isModified()
    Inherited, see "The header" in Mail::Message::Head

$obj->knownNames()
    Inherited, see "The header" in Mail::Message::Head

$obj->message( [$message] )
    Inherited, see "The header" in Mail::Message::Head

$obj->modified( [BOOLEAN] )
    Inherited, see "The header" in Mail::Message::Head

$obj->orderedFields()
    Inherited, see "The header" in Mail::Message::Head

  Access to the header
Extends "Access to the header" in Mail::Message::Head.

$obj->get( $name, [$index] )
    Get the information about the header line $name. Realization will take place. Improves base, see "Access to the header" in Mail::Message::Head

$obj->study( $name, [$index] )
    Inherited, see "Access to the header" in Mail::Message::Head

  About the body
Extends "About the body" in Mail::Message::Head.

$obj->guessBodySize()
    On a delayed head, this returns "undef", because when there is no header there is also no body.

    For messages in directory or network organized folders, Mail::Message::size() usually will give a figure for the whole message without much cost. Subtract a few hundred bytes for the header, and you will get a good estimate. Improves base, see "About the body" in Mail::Message::Head

$obj->guessTimeStamp()
    Make a guess about when the message was originally posted. On a delayed head, this returns "undef". For messages in directory or network organized folders, Mail::Message::timestamp() usually will give a figure without much cost.

$obj->isMultipart()
    Inherited, see "About the body" in Mail::Message::Head

  Internals
Extends "Internals" in Mail::Message::Head.

$obj->addNoRealize($field)
    Inherited, see "Internals" in Mail::Message::Head

$obj->addOrderedFields($fields)
    Inherited, see "Internals" in Mail::Message::Head

$obj->fileLocation()
    Inherited, see "Internals" in Mail::Message::Head

$obj->load()
    Inherited, see "Internals" in Mail::Message::Head

$obj->moveLocation($distance)
    Inherited, see "Internals" in Mail::Message::Head

$obj->read($parser)
    Inherited, see "Internals" in Mail::Message::Head

$obj->setNoRealize($field)
    Not possible. Improves base, see "Internals" in Mail::Message::Head

  Error handling
Extends "Error handling" in Mail::Message::Head.

$obj->AUTOLOAD()
    Inherited, see "Error handling" in Mail::Reporter

$obj->notImplemented()
    Inherited, see "Error handling" in Mail::Reporter

  Cleanup
Extends "Cleanup" in Mail::Message::Head.

$obj->DESTROY()
    Inherited, see "Cleanup" in Mail::Reporter

DETAILS
Extends "DETAILS" in Mail::Message::Head.

DIAGNOSTICS

Error: attempt to set field on a delayed header.
    Cast by setNoRealize()

Error: cannot build() a delayed header.
    A delayed message header cannot contain any information, so cannot be build. You can construct complete or subset headers. Cast by build()

Error: class $package does not implement method $method.
    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. Cast by notImplemented()

SEE ALSO
This module is part of Mail-Box version 4.02, built on April 10, 2026. Website: http://perl.overmeer.net/CPAN/

LICENSE
For contributors see file ChangeLog.

This software is copyright (c) 2001-2026 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.