NAME

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

VERSION

       This document describes RDF::Query::Algebra::Quad version 2.910.

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.

AUTHOR

        Gregory Todd Williams <gwilliams@cpan.org>