AtteanX::Store::LDF - Linked Data Fragment RDF store
use v5.14; use Attean; use Attean::RDF qw(iri blank literal); use AtteanX::Store::LDF; my $uri = 'http://fragments.dbpedia.org/2014/en'; my $store = Attean->get_store('LDF')->new(start_url => $uri); my $iter = $store->get_triples(undef,undef,literal("Albert Einstein")); while (my $triple = $iter->next) { say $triple->subject->ntriples_string . " " . $triple->predicate->ntriples_string . " " . $triple->object->ntriples_string . " ."; }
AtteanX::Store::LDF provides a triple-store connected to a Linked Data Fragment server. For more information on Triple Pattern Fragments consult http://linkeddatafragments.org/
Beyond the methods documented below, this class inherits methods from the Attean::API::TripleStore class.
Returns a new LDF-backed storage object. The required start_url argument is a URL pointing at any Linked Data Fragment. The attribure will be coerced, so it can be a string, a URI object, etc.
start_url
Return the count of triples matching the specified subject, predicate and objects.
Returns a stream object of all statements matching the specified subject, predicate and objects. Any of the arguments may be undef to match any value.
Returns an cost estimation for a single LDF triple based on estimates. The cost will be in the interval 10-1000 if the supplied argument is a AtteanX::Plan::LDF::Triple, undef otherwise.
Returns an empty plan since access_plans generates the needed plans.
Attean , Attean::API::TripleStore
Please report any bugs or feature requests to through the GitHub web interface at https://github.com/phochste/AtteanX-Store-LDF.
Patrick Hochstenbach <patrick.hochstenbach@ugent.be> Kjetil Kjernsmo <kjetilk@cpan.org>.
<patrick.hochstenbach@ugent.be>
This software is copyright (c) 2015 by Patrick Hochstenbach. This software is copyright (c) 2016 by Patrick Hochstenbach and Kjetil Kjernsmo. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install AtteanX::Store::LDF, copy and paste the appropriate command in to your terminal.
cpanm
cpanm AtteanX::Store::LDF
CPAN shell
perl -MCPAN -e shell install AtteanX::Store::LDF
For more information on module installation, please visit the detailed CPAN module installation guide.