Mail::Message::Head::Subset - subset of header information of a
message
Mail::Message::Head::Subset realizes a Mail::Message::Head::Complete
Mail::Message::Head::Subset
is a Mail::Message::Head
is a Mail::Reporter
my $subset = Mail::Message::Head::Subset->new(...)
$subset->isa('Mail::Message::Head') # true
$subset->guessBodySize # integer or undef
$subset->isDelayed # true
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).
Extends "DESCRIPTION" in Mail::Message::Head.
Extends "OVERLOADED" in Mail::Message::Head.
- overload:
""
- Inherited, see "OVERLOADED" in Mail::Message::Head
- overload:
bool
- Inherited, see "OVERLOADED" in Mail::Message::Head
Extends "METHODS" in Mail::Message::Head.
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
Extends "Access to the header" in
Mail::Message::Head.
- $obj->count($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] )
- Inherited, see "Access to the header" in
Mail::Message::Head
Extends "About the body" in Mail::Message::Head.
- $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()
- Inherited, see "About the body" in Mail::Message::Head
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
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,
$callback] )
- Mail::Message::Head::Subset->defaultTrace(
[$level]|[$loglevel, $tracelevel]|[$level, $callback] )
- Inherited, see "Error handling" in Mail::Reporter
- $obj->errors()
- Inherited, see "Error handling" in Mail::Reporter
- $obj->log( [$level, [$strings]] )
- Mail::Message::Head::Subset->log(
[$level, [$strings]] )
- Inherited, see "Error handling" in Mail::Reporter
- $obj->logPriority($level)
- Mail::Message::Head::Subset->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
Extends "Cleanup" in Mail::Message::Head.
- $obj->DESTROY()
- Inherited, see "Cleanup" in Mail::Reporter
Extends "DETAILS" in Mail::Message::Head.
- 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.
This module is part of Mail-Box distribution version 3.009, built
on August 18, 2020. Website: http://perl.overmeer.net/CPAN/
Copyrights 2001-2020 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/