RDF::Query::Algebra::Path - Algebra class for path patterns
This document describes RDF::Query::Algebra::Path version 2.918.
Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.
new ( $start,
[ $op,
@paths ],
$end,
$graph )
Returns a new Path structure.
construct_args
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
path
Returns the path description for this path expression.
start
Returns the path origin node.
end
Returns the path destination node.
graph
Returns the named graph.
distinguish_bnode_variables
Returns a new Path object with blank nodes replaced by distinguished variables.
bounded_length
Returns true if the path is of bounded length.
sse
Returns the SSE string for this algebra expression.
as_sparql
Returns the SPARQL string for this algebra expression.
type
Returns the type of this algebra expression.
referenced_variables
Returns a list of the variable names used in this algebra expression.
potentially_bound
Returns a list of the variable names used in this algebra expression that will bind values during execution.
definite_variables
Returns a list of the variable names that will be bound after evaluating this algebra expression.
Gregory Todd Williams <gwilliams@cpan.org>