Provided by: librdf-query-perl_2.918-1_all
RDF::Query::Algebra::NamedGraph - Algebra class for NamedGraph patterns
This document describes RDF::Query::Algebra::NamedGraph version 2.918.
Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class. "new ( $graph, $pattern )" Returns a new NamedGraph structure. "construct_args" Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern. "graph" Returns the graph node of the named graph expression. "pattern" Returns the graph pattern of the named graph expression. "quads" Returns a list of the quads belonging to this NamedGraph. "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. "qualify_uris ( \%namespaces, $base_uri )" Returns a new algebra pattern where all referenced Resource nodes representing QNames (ns:local) are qualified using the supplied %namespaces. "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.
Gregory Todd Williams <email@example.com>