NAME

       Mail::Box::IMAP4::Head - header fields related IMAP interface

INHERITANCE

        Mail::Box::IMAP4::Head
          is a Mail::Message::Head
          is a Mail::Reporter

SYNOPSIS

DESCRIPTION

       This class implements a pure IMAP4 protocol interface, where as little data is retrieved
       from the header as possible.  This may look nice to you, but is not sufficient for many
       tasks.  For instance, you cannot removed or modify fields this way.

       Change Mail::Box::IMAP4::new(cache_head) to "YES" or "DELAY", to get a message header
       which is capable of performing all possible games with headers.  On the other hand: the
       other settings are not 100% safe...

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

OVERLOADED

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

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

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

METHODS

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

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

       Mail::Box::IMAP4::Head->build( [PAIR|$field]-LIST )
           Inherited, see "Constructors" in Mail::Message::Head

       Mail::Box::IMAP4::Head->new(%options)
            -Option      --Defined in         --Default
             cache_fields                       false
             field_type    Mail::Message::Head  Mail::Message::Field::Fast
             log           Mail::Reporter       'WARNINGS'
             message       Mail::Message::Head  undef
             modified      Mail::Message::Head  <false>
             trace         Mail::Reporter       'WARNINGS'

           cache_fields => BOOLEAN
             This is only a read-cache on fields, because this kind of header does not allow
             writing of fields.  See Mail::Box::IMAP4::new(cache_head), this value is set to
             "false" for "NO" and "true" for "PARTIAL"..

           field_type => CLASS
           log => LEVEL
           message => MESSAGE
           modified => BOOLEAN
           trace => LEVEL

   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.

       $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()
           Inherited, see "About the body" in Mail::Message::Head

       $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)
           Inherited, see "Internals" in Mail::Message::Head

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

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

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

       $obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
       Mail::Box::IMAP4::Head->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level,
       $callback] )
           Inherited, see "Error handling" in Mail::Reporter

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

       $obj->log( [$level, [$strings]] )
       Mail::Box::IMAP4::Head->log( [$level, [$strings]] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->logPriority($level)
       Mail::Box::IMAP4::Head->logPriority($level)
           Inherited, see "Error handling" in Mail::Reporter

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

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

       $obj->report( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->reportAll( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->trace( [$level] )
           Inherited, see "Error handling" in Mail::Reporter

       $obj->warnings()
           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: Package $package does not implement $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.

SEE ALSO

       This module is part of Mail-Box-IMAP4 distribution version 3.007, built on June 13, 2019.
       Website: http://perl.overmeer.net/CPAN/

LICENSE

       Copyrights 2001-2019 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 http://dev.perl.org/licenses/