NAME¶

Attean::SPARQLClient - RDF blank nodes

VERSION¶

This document describes Attean::SPARQLClient version 0.033

SYNOPSIS¶

  use v5.14;
  use Attean;
  my $client = Attean::SPARQLClient->new(endpoint => 'http://example.org/sparql');
  my $results = $client->query('SELECT * WHERE { ?s ?p ?o }');
  while (my $r = $results->next) {
    say $r->as_string;
  }

DESCRIPTION¶

The Attean::SPARQLClient class provides an API to execute SPARQL queries against a remote SPARQL Protocol endpoint.

ATTRIBUTES¶

The following attributes exist:

"endpoint"

A URL of the remote service implementing the SPARQL 1.1 Protocol. This value is a Attean::API::IRI, but can be coerced from a string.

"silent"

<< user_agent >>

"request_signer"

METHODS¶

"query_request( $sparql )"

Returns an HTTP::Request object for the given SPARQL query string.

"query( $sparql )"

Executes the given SPARQL query string at the remote endpoint. If execution is successful, returns an Attean::API::Iterator object with the results. If execution fails but the client "silent" flag is true, returns an empty iterator. Otherwise raises an error via "die".

BUGS¶

Please report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/attean/issues>.

SEE ALSO¶

SPARQL 1.1 Protocol <https://www.w3.org/TR/sparql11-protocol/>

AUTHOR¶

Gregory Todd Williams "<gwilliams@cpan.org>"

COPYRIGHT¶

Copyright (c) 2014--2022 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.