Provided by: librdf-query-perl_2.908-1_all
RDF::Query::Algebra::BasicGraphPattern - Algebra class for BasicGraphPattern patterns
This document describes RDF::Query::Algebra::BasicGraphPattern version 2.908.
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. "check_duplicate_blanks" Returns true if blank nodes respect the SPARQL rule of no blank-label re-use across BGPs, otherwise throws a RDF::Query::Error::QueryPatternError exception. "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.
Gregory Todd Williams <firstname.lastname@example.org>