NAME
DataFlow::Item - A wrapper around the regular data processed by DataFlow
VERSION
version 1.121830
SYNOPSIS
use DataFlow::Item;
my $item = DataFlow::Item->itemize( 'channel_name', 42 );
say $item->get_data( 'channel_name' );
$item->set_metadata( 'somekey', q{some meta value} );
say item->get_metadata( 'somekey' );DESCRIPTION
Wraps data and metadata for processing through DataFlow.
ATTRIBUTES
metadata
A hash reference containing metada for the DataFlow.
channels
A hash reference containing data for each 'channel'.
METHODS
metakeys
A convenience method that returns the list of the keys to the metadata hash reference.
channel_list
A convenience method that returns the list of the keys to the channels hash reference.
get_metadata
Returns a metadata value, identified by its key.
set_metadata
Sets a metadata value, identified by its key.
get_data
Returns a channel value, identified by the channel name.
set_data
Sets a channel value, identified by the channel name.
itemize
This is a class method that creates a new DataFlow::Item with a certain data stored in a specific channel. As a class method, it must be called like this:
my $item = DataFlow::Item->itemize( 'channel1', { my => data } );clone
Makes a copy of the DataFlow::Item object. Note that the whole metadata contents (hash reference, really) is passed by reference to the new instance, while the contents of the channels are copied one by one into the new object.
narrow
Makes a copy of the DataFlow::Item object narrowed to one single channel. In other words, it is like clone, but the channels will contain only the channel specified as a parameter.
SEE ALSO
Please see those modules/websites for more information related to this module.
AUTHOR
Alexei Znamensky <russoz@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2011 by Alexei Znamensky.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
BUGS AND LIMITATIONS
You can make new bug reports, and view existing ones, through the web interface at http://rt.cpan.org.
DISCLAIMER OF WARRANTY
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