Gregory Todd Williams > RDF-Query-2.909 > RDF::Query::Algebra::Path

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Module Version: 2.909   Source   Latest Release: RDF-Query-2.910

NAME ^

RDF::Query::Algebra::Path - Algebra class for path patterns

VERSION ^

This document describes RDF::Query::Algebra::Path version 2.909.

METHODS ^

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.

AUTHOR ^

 Gregory Todd Williams <gwilliams@cpan.org>
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