Mark Overmeer > Mail-Box-2.108 > Mail::Message::Head::Subset

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Module Version: 2.108   Source   Latest Release: Mail-Box-2.117

NAME ^

Mail::Message::Head::Subset - subset of header information of a message

INHERITANCE ^

 Mail::Message::Head::Subset realizes a Mail::Message::Head::Complete

 Mail::Message::Head::Subset
   is a Mail::Message::Head
   is a Mail::Reporter

SYNOPSIS ^

 my $subset = Mail::Message::Head::Subset->new(...)
 $subset->isa('Mail::Message::Head')  # true
 $subset->guessBodySize               # integer or undef
 $subset->isDelayed                   # true

DESCRIPTION ^

Some types of folders contain an index file which lists a few lines of information per messages. Especially when it is costly to read header lines, the index speeds-up access considerably. For instance, the subjects of all messages are often wanted, but waiting for a thousand messages of the folder to be read may imply a thousand network reads (IMAP) or file openings (MH)

When you access header fields which are not in the header subset, the whole header has to be parsed (which may consume considerable time, depending on the type of folder).

See documentation in base class.

OVERLOADED ^

See documentation in base class.

overload: ""()

See "OVERLOADED" in Mail::Message::Head

overload: bool()

See "OVERLOADED" in Mail::Message::Head

METHODS ^

See documentation in base class.

Constructors

See documentation in base class.

Mail::Message::Head::Subset->build([PAIR|FIELD]-LIST)

See "Constructors" in Mail::Message::Head

Mail::Message::Head::Subset->new(OPTIONS)

See "Constructors" in Mail::Message::Head

The header

See documentation in base class.

$obj->isDelayed()

See "The header" in Mail::Message::Head

$obj->isEmpty()

See "The header" in Mail::Message::Head

$obj->isModified()

See "The header" in Mail::Message::Head

$obj->knownNames()

See "The header" in Mail::Message::Head

$obj->message([MESSAGE])

See "The header" in Mail::Message::Head

$obj->modified([BOOLEAN])

See "The header" in Mail::Message::Head

$obj->orderedFields()

See "The header" in Mail::Message::Head

Access to the header

See documentation in base class.

$obj->count(NAME)

Count the number of fields with this NAME. If the NAME cannot be found, the full header get loaded. In case we find any NAME field, it is decided we know all of them, and loading is not needed.

$obj->get(NAME [,INDEX])

Get the data which is related to the field with the NAME. The case of the characters in NAME does not matter. When a NAME is used which is not known yet, realization will take place.

$obj->study(NAME [,INDEX])

See "Access to the header" in Mail::Message::Head

About the body

See documentation in base class.

$obj->guessBodySize()

The body size is defined in the Content-Length field. However, this field may not be known. In that case, a guess is made based on the known Lines field. When also that field is not known yet, undef is returned.

$obj->isMultipart()

See "About the body" in Mail::Message::Head

Internals

See documentation in base class.

$obj->addNoRealize(FIELD)

See "Internals" in Mail::Message::Head

$obj->addOrderedFields(FIELDS)

See "Internals" in Mail::Message::Head

$obj->fileLocation()

See "Internals" in Mail::Message::Head

$obj->load()

See "Internals" in Mail::Message::Head

$obj->moveLocation(DISTANCE)

See "Internals" in Mail::Message::Head

$obj->read(PARSER)

See "Internals" in Mail::Message::Head

$obj->setNoRealize(FIELD)

See "Internals" in Mail::Message::Head

Error handling

See documentation in base class.

$obj->AUTOLOAD()

See "Error handling" in Mail::Reporter

$obj->addReport(OBJECT)

See "Error handling" in Mail::Reporter

$obj->defaultTrace([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])
Mail::Message::Head::Subset->defaultTrace([LEVEL]|[LOGLEVEL, TRACELEVEL]|[LEVEL, CALLBACK])

See "Error handling" in Mail::Reporter

$obj->errors()

See "Error handling" in Mail::Reporter

$obj->log([LEVEL [,STRINGS]])
Mail::Message::Head::Subset->log([LEVEL [,STRINGS]])

See "Error handling" in Mail::Reporter

$obj->logPriority(LEVEL)
Mail::Message::Head::Subset->logPriority(LEVEL)

See "Error handling" in Mail::Reporter

$obj->logSettings()

See "Error handling" in Mail::Reporter

$obj->notImplemented()

See "Error handling" in Mail::Reporter

$obj->report([LEVEL])

See "Error handling" in Mail::Reporter

$obj->reportAll([LEVEL])

See "Error handling" in Mail::Reporter

$obj->trace([LEVEL])

See "Error handling" in Mail::Reporter

$obj->warnings()

See "Error handling" in Mail::Reporter

Cleanup

See documentation in base class.

$obj->DESTROY()

See "Cleanup" in Mail::Reporter

DETAILS ^

See documentation in base class.

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 distribution version 2.108, built on June 25, 2013. Website: http://perl.overmeer.net/mailbox/

LICENSE ^

Copyrights 2001-2013 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://www.perl.com/perl/misc/Artistic.html

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