NAME

       Catmandu::Exporter::RDF - serialize RDF data

SYNOPSIS

       In Perl code:

           use Catmandu -all;

           my $exporter = exporter('RDF',
               file => 'export.rdf',
               type => 'XML',
               fix  => 'rdf.fix'
           );

           $exporter->add( $aref ); # pass RDF data in aREF encoding

           $exporter->commit;

DESCRIPTION

       This Catmandu::Exporter exports RDF data in different RDF serializations.

CONFIGURATION

       file
       fh
       encoding
       fix Default  configuration  options of Catmandu::Exporter.  The option "fix" is supported as derived from
           Catmandu::Fixable. For every "add" or for every item in "add_many" the given fixes  will  be  applied
           first.

       type
           A  serialization  form  can  be set with option "type" with default value "NTriples". The option must
           refer  to  a  subclass  of  RDF::Trine::Serializer,  for  instance  "Turtle"  for   RDF/Turtle   with
           RDF::Trine::Serializer::Turtle.   The  first letter is transformed uppercase, so "format => 'turtle'"
           will work as well. In addition there are aliases "ttl" for "Turtle", "n3" for "Notation3", "xml"  and
           "XML" for "RDFXML", "json" for "RDFJSON".

           When the option "type" is set to 'NTriples' the export can be streamed in all other cases the results
           are exported in bulk after "commit()".

       ns  The  option  "ns"  can  refer  to an instance of or to a constructor argument of RDF::NS. Use a fixed
           date, such as "20130816" to make sure your URI namespace prefixes are stable.

METHODS

       See also Catmandu::Exporter.

   add( ... )
       RDF data is added given in another RDF Encoding Form (aREF) as implemented with RDF::aREF and defined  at
       <http://github.com/gbv/aref>.

   count
       Returns the number of times "add" has been called. In contrast to other Catmandu exporters, this does not
       reflect the number of exporter records because RDF data is always merged to one RDF graph.

   uri( $uri )
       Expand    and    abbreviated    with    RDF::NS.    For    instance    ""dc:title""    is   expanded   to
       ""http://purl.org/dc/elements/1.1/title"".

SEE ALSO

       Serialization is based on RDF::Trine::Serializer.

perl v5.36.0                                       2022-12-06                       Catmandu::Exporter::RDF(3pm)