RDF::Trine::Statement - Class for triples and triple patterns
This document describes RDF::Trine::Statement version 1.019
- "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.
- "clone"
- "bind_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.
Please report any bugs or feature requests to through the GitHub
web interface at <https://github.com/kasei/perlrdf/issues>.
Gregory Todd Williams
"<gwilliams@cpan.org>"
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.