NAME
RDF::Trine::Statement - Class for triples and triple patterns
VERSION
This document describes RDF::Trine::Statement version 1.013
METHODS
new ( $s, $p, $o )-
Returns a new Triple structure.
construct_args-
Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.
nodes-
Returns the subject, predicate and object of the triple pattern.
node_names-
Returns the method names for accessing the nodes of this statement.
subject-
Returns the subject node of the triple pattern.
predicate-
Returns the predicate node of the triple pattern.
object-
Returns the object node of the triple pattern.
as_string-
Returns the statement in a string form.
has_blanks-
Returns true if any of the nodes in this statement are blank nodes.
sse-
Returns the SSE string for this algebra expression.
from_sse ( $string, $context )-
Parses the supplied SSE-encoded string and returns a RDF::Trine::Statement object.
type-
Returns the type of this algebra expression.
referenced_variables-
Returns a list of the variable names used in this algebra expression.
definite_variables-
Returns a list of the variable names that will be bound after evaluating this algebra expression.
clonebind_variables ( \%bound )-
Returns a new algebra pattern with variables named in %bound replaced by their corresponding bound values.
subsumes ( $statement )-
Returns true if this statement will subsume the $statement when matched against a triple store.
from_redland ( $statement )-
Given a RDF::Redland::Statement object, returns a perl-native RDF::Trine::Statement object.
rdf_compatible-
Returns true if and only if the statement can be expressed in RDF. That is, the subject of the statement must be a resource or blank node; the predicate must be a resource; and the object must be a resource, blank node or literal.
RDF::Trine::Statement does allow statements to be created which cannot be expressed in RDF - for instance, statements including variables.
BUGS
Please report any bugs or feature requests to through the GitHub web interface at https://github.com/kasei/perlrdf/issues.
AUTHOR
Gregory Todd Williams <gwilliams@cpan.org>
COPYRIGHT
Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.