RDF::Query::Algebra::Quad(3)
Algebra class for Quad patterns
VERSION
This document describes RDF::Query::Algebra::Quad version 2.916.
METHODS
Beyond the methods documented below, this class inherits methods from the
RDF::Query::Algebra class.
- "new ( $s, $p, $o, $g )"
-
Returns a new Quad structure.
- "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).
- "referenced_blanks"
-
Returns a list of the blank node names used in 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.
- "bf ()"
-
Returns a string representing the state of the nodes of the triple (bound or free).
- "distinguish_bnode_variables"
-
Returns a new Quad object with blank nodes replaced by distinguished variables.
- "label ( $label => $value )"
-
Sets the named $label to $value for this quad object.
If no $value is given, returns the current label value, or undef if none
exists.
