NAME

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

VERSION

This document describes RDF::Query::Algebra::BasicGraphPattern version 2.918.

METHODS

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

"new ( @triples )": Returns a new BasicGraphPattern structure.
"construct_args": Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
"triples": Returns a list of triples belonging to this BGP.
"quads": Returns a list of the (implicit) quads belonging to this BGP.
"sse": Returns the SSE string for this algebra expression.
"explain": Returns a string serialization of the algebra appropriate for display on the command line.
"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/>).
"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.
"connected": Returns true if the pattern is connected through shared variables, false otherwise.
"subsumes ( $pattern )": Returns true if the bgp subsumes the pattern, false otherwise.
"bf ()": Returns a string representing the state of the nodes of the triple (bound or free).
"clone"
"bind_variables ( \%bound )": Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values.

AUTHOR

 Gregory Todd Williams <gwilliams@cpan.org>