NAME¶

SYNOPSIS¶

    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  .
       " .";
    }

DESCRIPTION¶

METHODS¶

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.

cost_for_plan($plan)

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.

plans_for_algebra($algebra)

Returns an empty plan since access_plans generates the needed plans.

SEE ALSO¶

BUGS¶

AUTHOR¶

COPYRIGHT¶