RDF::Query::Node - Base class for RDF Nodes
This document describes RDF::Query::Node version 2.918.
is_variable
Returns true if this RDF node is a variable, false otherwise.
compare ( $a, $b )
Returns -1, 0, or 1 if $a is less than, equal to, or greater than $b, respectively, according to the SPARQL sorting rules.
from_trine ( $node )
Returns a new RDF::Query::Node object with the same value as $node, a RDF::Trine::Node object. This essentially promotes $node to a node object with extra functionality provided by the RDF::Query package (like SPARQL-defined ordering).
$node
from_attean ( $node )
Likewise, but from Attean.
explain
Returns a string serialization of the node appropriate for display on the command line. This method is primarily used by the explain method of the subclasses of RDF::Query::Plan.
compare ( $node_a, $node_b )
Returns -1, 0, or 1 if $node_a sorts less than, equal to, or greater than $node_b in the defined SPARQL ordering, respectively. This function may be used as the function argument to <sort>.
<sort
iri ( $iri )
Returns a RDF::Query::Node::Resource object with the given IRI value.
blank ( $id )
Returns a RDF::Query::Node::Blank object with the given identifier.
literal ( $value, $lang, $dt )
Returns a RDF::Query::Node::Literal object with the given value and optional language/datatype.
variable ( $name )
Returns a RDF::Query::Node::Variable object with the given variable name.
Gregory Todd Williams <gwilliams@cpan.org>
To install RDF::Query, copy and paste the appropriate command in to your terminal.
cpanm
cpanm RDF::Query
CPAN shell
perl -MCPAN -e shell install RDF::Query
For more information on module installation, please visit the detailed CPAN module installation guide.