NAME
RDF::Query::Algebra::NamedGraph - Algebra class for NamedGraph patterns
VERSION
This document describes RDF::Query::Algebra::NamedGraph version 2.919.
METHODS
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.
AUTHOR
Gregory Todd Williams <[email protected]>