RDF::Trine::Iterator::Boolean - Stream (iterator) class for boolean query results

This document describes RDF::Trine::Iterator::Boolean version 0.135

 use RDF::Trine::Iterator::Boolean;

 my $iterator = RDF::Trine::Iterator::Boolean->new( [1] );
 my $bool = $iterator->get_boolean;
 if ($bool) {
 	print "Yes.\n";
 }

Beyond the methods documented below, this class inherits methods from the RDF::Trine::Iterator class.

new ( \@results, %args )

new ( \&results, %args )

Returns a new SPARQL Result interator object. Results must be either an reference to an array containing results or a CODE reference that acts as an iterator, returning successive items when called, and returning undef when the iterator is exhausted.

$type should be one of: bindings, boolean, graph.

is_boolean

Returns true if the underlying result is a boolean value.

as_string ( $max_size [, \$count] )

Returns a string serialization of the stream data.

as_xml ( $max_size )

Returns an XML serialization of the stream data.

print_xml ( $fh, $max_size )

Prints an XML serialization of the stream data to the filehandle $fh.

as_json ( $max_size )

Returns a JSON serialization of the stream data.

construct_args

Returns the arguments necessary to pass to the stream constructor _new to re-create this stream (assuming the same closure as the first

JSON

Scalar::Util

Gregory Todd Williams <gwilliams@cpan.org>

Copyright (c) 2006-2010 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.