RDF::Query::Algebra::Triple - Algebra class for Triple patterns

This document describes RDF::Query::Algebra::Triple version 2.907.

Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.

new ( $s, $p, $o )

Returns a new Triple structure.

as_sparql

Returns the SPARQL string for this algebra expression.

as_hash

Returns the query as a nested set of plain data structures (no objects).

as_spin ( $model )

Adds statements to the given model to represent this algebra object in the SPARQL Inferencing Notation (http://www.spinrdf.org/).

referenced_blanks

Returns a list of the blank node names used in this algebra expression.

subsumes ( $pattern )

Returns true if the triple subsumes the pattern, false otherwise.

bf ()

Returns a string representing the state of the nodes of the triple (bound or free).

distinguish_bnode_variables

Returns a new Quad object with blank nodes replaced by distinguished variables.

label ( $label => $value )

Sets the named $label to $value for this triple object. If no $value is given, returns the current label value, or undef if none exists.

 Gregory Todd Williams <gwilliams@cpan.org>