VERSION
This document describes RDF::Trine::Graph version 1.014SYNOPSIS
use RDF::Trine::Graph;
my $a = RDF::Trine::Graph->new( $model_a );
my $b = RDF::Trine::Graph->new( $model_b );
print "graphs are " . ($a->equals( $b ) ? "the same" : "different");
DESCRIPTION
RDF::Trine::Graph provdes a mechanism for testing graph isomorphism based on graph triples from either a RDF::Trine::Model or a RDF::Trine::Iterator. Isomorphism testing requires materializing all of a graph's triples in memory, and so should be used carefully in situations with large graphs.METHODS
- "new ( $model )"
- "new ( $iterator )"
- Returns a new graph from the given RDF::Trine::Model or RDF::Trine::Iterator::Graph object.
- "equals ( $graph )"
- 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 ( $graph )"
- 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 ( $graph )"
- 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"
- Returns two array refs, containing triples with blank nodes and triples without any blank nodes, respectively.
- "get_statements"
- Returns a RDF::Trine::Iterator::Graph object for the statements in this graph.
- "error"
- Returns an error string explaining the last failed "equal" call.
BUGS
Please report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/perlrdf/issues>.AUTHOR
Gregory Todd Williams "<[email protected]>"COPYRIGHT
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.