Mail::Spool::Node - Mail Spool inode encapsulization
  #!/usr/bin/perl -w
  package MySpoolNode;
  use Mail::Spool::Node;
  @ISA = qw(Mail::Spool::Node);
  # OR
  sub new {
    my $self = __PACKAGE__->SUPER::new(@_);
    ### do my own stuff here
    return $self;
  }
Mail::Spool::Node is intended as an encapsulization of an inode
    for use by Mail::Spool::Handle. It has been written with the intent of being
    able to use a database or other "file" system as a backend.
Properties of Mail::Spool::Node are accessed methods of the same
    name. They may be set by calling the method and passing the new value as an
    argument. For example:
  my $from = $self->from;
  $self->from($new_from);
The following properties are available:
  - to
 
  - Returns the "To" email address of this node.
 
  - from
 
  - Returns the "From" email address of this node.
 
  - id
 
  - Returns the message id of this node.
 
  - time
 
  - Returns the time this node was placed in the spool.
 
  - msh
 
  - Returns the mail spool handle that this node is in.
 
  - name
 
  - Returns the filename of this node in the mail spool handle directory.
 
  - new
 
  - Returns a Mail::Spool::Node object. Arguments in the form of a hash or
      hash ref are used to populate the object. Also calls
    load_node_properties.
 
  - can_process
 
  - Returns whether the node is eligible for processing. This is based upon
      how long it has been in the mail spool handle.
 
  - size
 
  - Returns the size of the node in bytes.
 
  - lock_node
 
  - Locks the node to prevent any other process from trying to write to it.
      This is done via File::NFSLock. Returns the lock object.
 
  - lock_error
 
  - Returns the error of File::NFSLock should something happen during the
      locking process.
 
  - filehandle
 
  - Returns an IO::Handle style object opened to the filename of this
    node.
 
  - filename
 
  - Returns the filename of this node.
 
  - fallback_filename
 
  - Returns the place to put this file in case the node could not be sent
      right now. Returns undef if fallback cannot proceed (undeliverable).
 
  - fallback
 
  - Actually perform the fallback operation.
 
  - delete_node
 
  - Unlink the node from the directory.
 
Please see also Mail::Spool, Mail::Spool::Handle.
  Copyright (C) 2001, Paul T Seamons
                      paul@seamons.com
                      http://seamons.com/
  This package may be distributed under the terms of either the
  GNU General Public License
    or the
  Perl Artistic License
  All rights reserved.