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   = '';
        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

    Beyond the methods documented below, this class inherits methods from the
    Attean::API::TripleStore class.

    new( start_url => $start_url )
        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.

    count_triples_estimate( $subject, $predicate, $object )
        Return the count of triples matching the specified subject, predicate
        and objects.

    get_triples( $subject, $predicate, $object)
        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 <>.

    Patrick Hochstenbach `<>` Kjetil Kjernsmo

    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.