RDF::Trine::Iterator::Boolean - Iterator class for boolean query results
This document describes RDF::Trine::Iterator::Boolean version 1.018
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
Please report any bugs or feature requests to through the GitHub web interface at https://github.com/kasei/perlrdf/issues.
Gregory Todd Williams <gwilliams@cpan.org>
<gwilliams@cpan.org>
Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install RDF::Trine, copy and paste the appropriate command in to your terminal.
cpanm
cpanm RDF::Trine
CPAN shell
perl -MCPAN -e shell install RDF::Trine
For more information on module installation, please visit the detailed CPAN module installation guide.