Attean::BindingEqualityTest(3) Test for equality of binding sets with bnode isomorphism


This document describes Attean::BindingEqualityTest version 0.017


use v5.14;
use Attean;
my $test = Attean::BindingEqualityTest->new();
if ($test->equals($iter_a, $iter_b)) {
say "Iterators contain equivalent bindings";




"equals ( $graph1, $graph2 )"
Returns true if the invocant and $graph represent two equal RDF graphs (e.g. there exists a bijection between the RDF statements of the invocant and $graph).
"is_subgraph_of ( $graph1, $graph2 )"
Returns true if the invocant is a subgraph of $graph. (i.e. there exists an injection of RDF statements from the invocant to $graph.)
"injection_map ( $graph1, $graph2 )"
If the invocant is a subgraph of $graph, returns a mapping of blank node identifiers from the invocant graph to $graph as a hashref. Otherwise returns false. The solution is not always unique; where there exist multiple solutions, the solution returned is arbitrary.
"split_blank_statements( $iter )"
Returns two array refs containing bindings from $iter, with bindings containing blank nodes and bindings without any blank nodes, respectively.


Please report any bugs or feature requests to through the GitHub web interface at <>.


Gregory Todd Williams "<[email protected]>"


Copyright (c) 2014--2016 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.