[Kde-perl] RDF, laces, and other things

[Ashley Winters]

--- jo walsh <jo at abduction.org> wrote:
> 
> hi hi,
> 
> noticing today, while uploading the first draft or 2 of my
> RDF::Simple
> package to CPAN, your RDF::Laces. it's interesting! it does weird
> things!
> i must admit, i myself as an rdf-head, find it counterintuitive - i
> have
> hardwired, perhaps nonperlish expectations of what to expect, i
> couldn't
> make it do what i meant, though not digging down to the source level
> - but
> then perhaps i shouldn't have to ;)
> 
> the sort of thing i'd expect is this:
> 
> my $doc = RDF::Laces->new('#foo');
> 
> $doc->{foaf} = 'http://xmlns.com/foaf/0.1/';
> 
> my $p = $doc->foaf->Person->foaf->name('Jo Walsh');
> $p->foaf->knows->()->foaf->name('Schuyler Erle');

Fun. That's an interesting assumption I need to tackle in the docs,
apparently. To put it simply:

$subject->predicate($object)
        ->predicate($object, $object)
        ->prefix->predicate($object);

is equivalent to:

:subject :predicate :object;
         :predicate :object, :object;
         prefix:predicate :object .

So, it's a way of serializing triples in Perl-syntax. It's meant to be
n3 in Perl, not an XML document constructor.

To take an example straight from the FOAF spec:

$doc->()    # new person in this document
    ->rdf
        ->type($doc->foaf->{Person})
#   ->a($doc->foaf->{Person})   # proposed shortcut for that
    ->foaf
        ->mbox_sha1sum('241021fb0e6289f92815fc210f9e9137262c252e')
        ->homepage($doc->('http://rdfweb.org/people/danbri/'))
        ->image($doc->('http://rdfweb.org/.../danbri-small.jpeg')))
;


I hang out on #perl and #kdebindings mostly as jql. I'll be on in a
couple hours. RDF::Laces is slightly off-topic for this mailing-list,
but this might as well be my announcement of it: I released a module to
CPAN. It's not PerlKDE, but yay anyways!

Ashley Winters

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