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

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.