CPAN::Metadata::RDF

CPAN::Metadata::RDF is an essential Perl module that delivers comprehensive metadata about CPAN and BACKPAN modules in the RDF format. The module needs a local CPAN mirror, for instance, mirrored by "/usr/bin/rsync -av --delete ftp.nic.funet.fi::CPAN /path/to/local/cpan/" and a local BACKPAN mirror such as "/usr/bin/rsync -av --delete pause.perl.org::backpan /path/to/local/backpan/". It also makes use of an SQLite database as a temporary datastore. Generating an RDF file from scratch can take up to two hours.

To implement the module, use "use strict; use CPAN::Metadata::RDF" in your code, then follow this example to create the metadata:
 my $m = CPAN::Metadata::RDF->new();
 $m->backpan("/home/acme/backpan/BACKPAN/");
 $m->cpan("/home/acme/cpan/CPAN/");
 $m->directory(".");
 $m->create_db;
 $m->generate;

The code generates the metadata, and when you need to output the metadata, use this:
 my $m = CPAN::Metadata::RDF->new();
 $m->directory(".");
 print $m->output;

The module also provides paths to parse and query RDF. CPAN::Metadata::RDF is a lifesaver for anyone looking to access a range of metadata on CPAN modules. With its numerous methodologies and comprehensive RDF format, CPAN::Metadata::RDF is a must-have for developers looking to access comprehensive metadata on CPAN modules.