NAME

XML::Atom::FromOWL - export RDF data to Atom

SYNOPSIS

 use LWP::UserAgent;
 use XML::Atom::OWL;
 use XML::Atom::FromOWL;
 
 my $ua       = LWP::UserAgent->new;
 my $r        = $ua->get('http://intertwingly.net/blog/index.atom');
 my $atomowl  = XML::Atom::OWL->new($r->decoded_content, $r->base);
 my $model    = $atomowl->consume->graph;  ## an RDF::Trine::Model
 
 my $exporter = XML::Atom::FromOWL->new;
 print $_->as_xml
        foreach $exporter->export_feeds($model);

DESCRIPTION

This module reads RDF and writes Atom feeds. It does the reverse of XML::Atom::OWL.

Constructor

• new(%options)

  Returns a new XML::Atom::FromOWL object.

  There are no valid options at the moment - the hash is reserved for future use.

Methods

• export_feeds($input, %options)

  Returns a list of feeds found in the input, in no particular order.

  The input may be a URI, file name, RDF::Trine::Model or anything else that can be handled by the parse function of RDF::TrineX::Functions.

  Each item in the list returned is an XML::Atom::Feed.

• export_feed($input, $subject, %options)

  As per export_feeds but exports just a single feed.

  The subject provided must be an RDF::Trine::Node::Blank or RDF::Trine::Node::Resource of type awol:Feed.

• export_entries($input, %options)

  Returns a list of entries found in the input, in no particular order.

  The input may be a URI, file name, RDF::Trine::Model or anything else that can be handled by the parse function of RDF::TrineX::Functions.

  Each item in the list returned is an XML::Atom::Entry.

• export_entry($input, $subject, %options)

  As per export_entry but exports just a single entry.

  The subject provided must be an RDF::Trine::Node::Blank or RDF::Trine::Node::Resource of type awol:Entry.

RDF Input

Input is expected to use AtomOwl http://bblfish.net/work/atom-owl/2006-06-06/#.

Feed Output

This module doesn't attempt to enforce many of OWL's semantic constraints (e.g. it doesn't enforce that an entry has only one title). It relies on XML::Atom::Feed and XML::Atom::Entry for that sort of thing, but if your input is sensible that shouldn't be a problem.

SEE ALSO

XML::Atom::OWL, HTML::Microformats, RDF::TrineX::Functions, XML::Atom::Feed, XML::Atom::Entry.

http://bblfish.net/work/atom-owl/2006-06-06/.

http://www.perlrdf.org/.

AUTHOR

Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE

This software is copyright (c) 2011-2012 by Toby Inkster.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES

THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.