
=head1 NAME

Mail::Box::Message - manage one message within a mail-folder


=head1 INHERITANCE

 Mail::Box::Message
   is a Mail::Message
   is a Mail::Reporter

 Mail::Box::Message is extended by
   Mail::Box::Dir::Message
   Mail::Box::File::Message
   Mail::Box::Message::Destructed
   Mail::Box::Net::Message


=head1 SYNOPSIS

 # Usually these message objects are created indirectly
 use Mail::Box::Manager;
 my $manager = Mail::Box::Manager->new;
 my $folder  = $manager->open(folder => 'Mail/Drafts');
 my $msg     = $folder->message(1);
 $msg->delete;
 $msg->size;   # and much more


=head1 DESCRIPTION

These pages do only describe methods which relate to folders.  If you
access the knowledge of a message, then read L<Mail::Message|Mail::Message>.

During its life, a message will pass through certain stages.  These
stages were introduced to reduce the access-time to the folder.  Changing
from stage, the message's body and head objects may change.



=head1 METHODS


=head2 Constructors


$obj-E<gt>B<clone>(OPTIONS)

=over 4

See L<Mail::Message/"Constructors">

=back

Mail::Box::Message-E<gt>B<new>(OPTIONS)

=over 4

 Option      Defined in       Default                                                       
 body        L<Mail::Message>  undef                                                         
 body_type                    <from folder>                                                 
 deleted     L<Mail::Message>  <false>                                                       
 field_type  L<Mail::Message>  undef                                                         
 folder                       <required>                                                    
 head        L<Mail::Message>  undef                                                         
 head_type   L<Mail::Message>  L<Mail::Message::Head::Complete|Mail::Message::Head::Complete>
 labels      L<Mail::Message>  {}                                                            
 log         L<Mail::Reporter>  C<'WARNINGS'>                                                 
 messageId   L<Mail::Message>  undef                                                         
 modified    L<Mail::Message>  <false>                                                       
 size                         undef                                                         
 trace       L<Mail::Reporter>  C<'WARNINGS'>                                                 
 trusted     L<Mail::Message>  <false>                                                       

. body OBJECT

. body_type CODE|CLASS

=over 4

If the body of a message is used delay-loaded, the message must what type
of message to become when it finally gets parsed.  The folder which is
delaying the load must specify the algorithm to determine that type.

=back

. deleted BOOLEAN

. field_type CLASS

. folder FOLDER

=over 4

The folder where this message appeared in.  The argument is
an instance of (a sub-class of) a L<Mail::Box|Mail::Box>.

=back

. head OBJECT

. head_type CLASS

. labels ARRAY|HASH

. log LEVEL

. messageId STRING

. modified BOOLEAN

. size INTEGER

=over 4

The size of the message, which includes head and body, but without the
message separators which may be used by the folder type.

=back

. trace LEVEL

. trusted BOOLEAN

=back

=head2 Constructing a message


$obj-E<gt>B<bounce>([RG-OBJECT|OPTIONS])

=over 4

See L<Mail::Message::Construct::Bounce/"Constructing a message">

=back

Mail::Box::Message-E<gt>B<build>([MESSAGE|PART|BODY], CONTENT)

=over 4

See L<Mail::Message::Construct::Build/"Constructing a message">

=back

Mail::Box::Message-E<gt>B<buildFromBody>(BODY, [HEAD], HEADERS)

=over 4

See L<Mail::Message::Construct::Build/"Constructing a message">

=back

$obj-E<gt>B<forward>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardAttach>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardEncapsulate>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardInline>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardNo>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardPostlude>

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardPrelude>

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

$obj-E<gt>B<forwardSubject>(STRING)

=over 4

See L<Mail::Message::Construct::Forward/"Constructing a message">

=back

Mail::Box::Message-E<gt>B<read>(FILEHANDLE|SCALAR|REF-SCALAR|ARRAY-OF-LINES, OPTIONS)

=over 4

See L<Mail::Message::Construct::Read/"Constructing a message">

=back

$obj-E<gt>B<rebuild>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Rebuild/"Constructing a message">

=back

$obj-E<gt>B<reply>(OPTIONS)

=over 4

See L<Mail::Message::Construct::Reply/"Constructing a message">

=back

$obj-E<gt>B<replyPrelude>([STRING|FIELD|ADDRESS|ARRAY-OF-THINGS])

=over 4

See L<Mail::Message::Construct::Reply/"Constructing a message">

=back

$obj-E<gt>B<replySubject>(STRING)

Mail::Box::Message-E<gt>B<replySubject>(STRING)

=over 4

See L<Mail::Message::Construct::Reply/"Constructing a message">

=back

=head2 The message


$obj-E<gt>B<container>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<copyTo>(FOLDER, OPTIONS)

=over 4

Copy the message to the indicated opened FOLDER, without deleting the
original.  The coerced message (the clone in the destination folder)
is returned.

 Option        Defined in       Default
 shallow                        <false>
 shallow_body                   <false>
 shallow_head                   <false>
 share                          <false>

. shallow BOOLEAN

=over 4

Used for L<clone(shallow)|Mail::Message/"Constructors">.

=back

. shallow_body BOOLEAN

=over 4

Used for L<clone(shallow_body)|Mail::Message/"Constructors">.

=back

. shallow_head BOOLEAN

=over 4

Used for L<clone(shallow_head)|Mail::Message/"Constructors">.

=back

. share BOOLEAN

=over 4

Try to share the physical storage of the message between the two folders.
Sometimes, they even may be of different types.  When not possible, this
options will be silently ignored.

=back

I<Example:> 

 my $draft = $mgr->open(folder => 'Draft');
 $message->copyTo($draft, share => 1);

=back

$obj-E<gt>B<folder>([FOLDER])

=over 4

In with folder did we detect this message/dummy?  This is a reference
to the folder-object.

=back

$obj-E<gt>B<isDummy>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<isPart>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<messageId>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<moveTo>(FOLDER, OPTIONS)

=over 4

Move the message from this folder to the FOLDER specified.  This will
create a copy using L<clone()|Mail::Message/"Constructors"> first.  Then, this original message is
flagged to get deleted.  So until the source folder is closed, two copies
of the message may stay in memory.

The newly created message clone (part of the destination folder)
is returned.  All OPTIONS are passed to L<copyTo()|Mail::Box::Message/"The message">

 Option        Defined in       Default                          
 shallow_body                   <undef>                          
 share                          <true unless shallow_body exists>

. shallow_body BOOLEAN

=over 4

Only create a shallow body, which means that the header can not be
reused.  A message can therefore not be shared in storage unless
explicitly stated.

=back

. share BOOLEAN

=over 4

When there is a chance that the original message can be undeleted, then
this must be set to false.  Otherwise a shallow clone will be made, which
will share the header which can be modified in the undeleted message.

=back

I<Example:> of moving a message


 my $t = $msg->moveTo('trash');

is equivalent to

 my $t = $msg->copyTo('trash', share => 1);
 $msg->delete;

=back

$obj-E<gt>B<print>([FILEHANDLE])

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<send>([MAILER], OPTIONS)

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<seqnr>([INTEGER])

=over 4

Get the number of this message is the current folder.  It starts counting
from zero.  Do not change the number.

=back

$obj-E<gt>B<size>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<toplevel>

=over 4

See L<Mail::Message/"The message">

=back

$obj-E<gt>B<write>([FILEHANDLE])

=over 4

See L<Mail::Message/"The message">

=back

=head2 The header


$obj-E<gt>B<bcc>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<cc>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<date>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<destinations>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<from>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<get>(FIELDNAME)

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<guessTimestamp>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<head>([HEAD])

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<nrLines>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<sender>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<study>(FIELDNAME)

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<subject>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<timestamp>

=over 4

See L<Mail::Message/"The header">

=back

$obj-E<gt>B<to>

=over 4

See L<Mail::Message/"The header">

=back

=head2 The body


$obj-E<gt>B<body>([BODY])

=over 4

See L<Mail::Message/"The body">

=back

$obj-E<gt>B<decoded>(OPTIONS)

=over 4

See L<Mail::Message/"The body">

=back

$obj-E<gt>B<encode>(OPTIONS)

=over 4

See L<Mail::Message/"The body">

=back

$obj-E<gt>B<isMultipart>

=over 4

See L<Mail::Message/"The body">

=back

$obj-E<gt>B<isNested>

=over 4

See L<Mail::Message/"The body">

=back

$obj-E<gt>B<parts>(['ALL'|'ACTIVE'|'DELETED'|'RECURSE'|FILTER])

=over 4

See L<Mail::Message/"The body">

=back

=head2 Flags


$obj-E<gt>B<delete>

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<deleted>([BOOLEAN])

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<isDeleted>

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<isModified>

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<label>(LABEL|PAIRS)

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<labels>

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<labelsToStatus>

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<modified>([BOOLEAN])

=over 4

See L<Mail::Message/"Flags">

=back

$obj-E<gt>B<statusToLabels>

=over 4

See L<Mail::Message/"Flags">

=back

=head2 The whole message as text


$obj-E<gt>B<file>

=over 4

See L<Mail::Message::Construct::Text/"The whole message as text">

=back

$obj-E<gt>B<lines>

=over 4

See L<Mail::Message::Construct::Text/"The whole message as text">

=back

$obj-E<gt>B<printStructure>([FILEHANDLE][, INDENT])

=over 4

See L<Mail::Message::Construct::Text/"The whole message as text">

=back

$obj-E<gt>B<string>

=over 4

See L<Mail::Message::Construct::Text/"The whole message as text">

=back

=head2 Internals


$obj-E<gt>B<clonedFrom>

=over 4

See L<Mail::Message/"Internals">

=back

Mail::Box::Message-E<gt>B<coerce>(MESSAGE, OPTIONS)

=over 4

See L<Mail::Message/"Internals">

=back

$obj-E<gt>B<diskDelete>

=over 4

Remove a message from disk.  This is not from the folder, but everything
else, like parts of the message which are stored outside from the
folder.

=back

$obj-E<gt>B<isDelayed>

=over 4

See L<Mail::Message/"Internals">

=back

$obj-E<gt>B<readBody>(PARSER, HEAD [, BODYTYPE])

=over 4

Read the body of one message.  The PARSER gives access to the folder file.
The HEAD has been read with L<readHead()|Mail::Message/"Internals">.  The optional BODYTYPE supplies
the class name of the body to be created, or a code reference to a
routine which can produce a body type based on the head (passed as
first argument).

By default, the BODYTYPE will call L<Mail::Box::determineBodyType()|Mail::Box/"Internals">
where the message will be added to.

=back

$obj-E<gt>B<readFromParser>(PARSER, [BODYTYPE])

=over 4

See L<Mail::Message/"Internals">

=back

$obj-E<gt>B<readHead>(PARSER [,CLASS])

=over 4

See L<Mail::Message/"Internals">

=back

$obj-E<gt>B<recursiveRebuildPart>(PART, OPTIONS)

=over 4

See L<Mail::Message::Construct::Rebuild/"Internals">

=back

$obj-E<gt>B<storeBody>(BODY)

=over 4

See L<Mail::Message/"Internals">

=back

$obj-E<gt>B<takeMessageId>([STRING])

=over 4

See L<Mail::Message/"Internals">

=back

=head2 Error handling


$obj-E<gt>B<AUTOLOAD>

=over 4

See L<Mail::Message::Construct/"METHODS">

=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::Message-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::Message-E<gt>B<log>([LEVEL [,STRINGS]])

=over 4

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

=back

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

Mail::Box::Message-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<shortSize>([VALUE])

Mail::Box::Message-E<gt>B<shortSize>([VALUE])

=over 4

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

=back

$obj-E<gt>B<shortString>

=over 4

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

=back

$obj-E<gt>B<destruct>

=over 4

Removes most of the memory occupied by the message by detaching the header
and body.  Then, the object changes into a L<Mail::Box::Message::Destructed|Mail::Box::Message::Destructed>
which will catch all attempts to access the header and body.  Be careful
with the usage of this method.

=back

$obj-E<gt>B<inGlobalDestruction>

=over 4

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

=back



=head1 DIAGNOSTICS

I<Error:> Cannot include forward source as $include.

Unknown alternative for the L<forward(include)|Mail::Message::Construct::Forward/"Constructing a message">.  Valid choices are
C<NO>, C<INLINE>, C<ATTACH>, and C<ENCAPSULATE>.

I<Error:> Cannot include reply source as $include.

Unknown alternative for the C<include> option of L<reply()|Mail::Message::Construct::Reply/"Constructing a message">.  Valid
choices are C<NO>, C<INLINE>, and C<ATTACH>.

I<Error:> No address to create forwarded to.

If a forward message is created, a destination address must be specified.

I<Error:> No default mailer found to send message.

The message L<send()|Mail::Message/"The message"> mechanism had not enough information to automatically
find a mail transfer agent to sent this message.  Specify a mailer
explicitly using the C<via> options.

I<Error:> Only build() Mail::Message's; they are not in a folder yet

You may wish to construct a message to be stored in a some kind
of folder, but you need to do that in two steps.  First, create a
normal L<Mail::Message|Mail::Message>, and then add it to the folder.  During this
L<Mail::Box::addMessage()|Mail::Box/"The folder"> process, the message will get L<coerce()|Mail::Message/"Internals">-d
into the right message type, adding storage information and the like.

I<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.

I<Error:> forwardAttach requires a preamble object


I<Error:> forwardEncapsulate requires a preamble object


I<Error:> no rebuild rule $name defined.



=head1 DETAILS






=head1 REFERENCES

See the MailBox website at L<http://perl.overmeer.net/mailbox/> for more details.

=head1 COPYRIGHTS

Distribution version 2.058.
Written by Mark Overmeer (mark@overmeer.net).  See the ChangeLog for
other contributors.

Copyright (c) 2001-2003 by the author(s). All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.


