/ 
RDF-Query-Client-0.01
River stage one • 5 direct dependents • 5 total dependents
/ RDF::Query::Client

NAME

RDF::Query::Client - Client for W3C SPARQL Protocol 1.0

VERSION

0.01

SYNOPSIS

use RDF::Query::Client;

my $query = new RDF::Query::Client ("SELECT * WHERE {?s ?p ?o. ?o ?p ?s.}");
my $iterator = $query->execute('http://example.com/sparql');
while (my $row = $iterator->next) {
  print $row->{'s'}->as_string;
}

METHODS

new ( $query, \%opts )

Returns a new RDF::Query::Client object for the specified $query. The object's interface is designed to be roughly compatible with RDF::Query objects. The query language is always 'sparql'.

Options include:

* UserAgent - an LWP::UserAgent to handle HTTP requests.
execute ( $endpoint, \%opts )

$endpoint is a URI object or string containing the endpoint URI to be queried.

Options include:

* UserAgent - an LWP::UserAgent to handle HTTP requests.
* QueryMethod - 'GET', 'POST' or undef (automatic).
* QueryParameter - defaults to 'query'.
* Headers - additional headers to include (hashref).

Returns undef on error; an RDF::Trine::Iterator if called in a scalar context; an array obtained by calling get_all on the iterator if called in list context.

as_sparql ()

Returns the query as a string in the SPARQL syntax.

useragent ()

Returns the LWP::UserAgent object used for retrieving web content.

http_response ()

Returns the last HTTP Response the client experienced.

error ()

Returns the last error the client experienced.

get ()
prepare ()
execute_plan ()
execute_with_named_graphs ()
aggregate ()
pattern ()
sse ()
algebra_fixup ()
add_function ()
supported_extensions ()
supported_functions ()
add_computed_statement_generator ()
get_computed_statement_generators ()
net_filter_function ()
add_hook_once ()
add_hook ()
parsed ()
bridge ()
log ()
logger ()
costmodel ()

Each of these currently returns undef. They are placeholders for compatibility with RDF::Query.

SEE ALSO

AUTHOR

Toby Inkster, <mail@tobyinkster.co.uk>

COPYRIGHT AND LICENSE

Copyright (C) 2009 by Toby Inkster

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.0 or, at your option, any later version of Perl 5 you may have available.