rdf::redland::statement(3pm) [debian man page]

RDF::Redland::Statement(3pm)				User Contributed Perl Documentation			      RDF::Redland::Statement(3pm)

NAME

       RDF::Redland::Statement - Redland RDF Statement Class

SYNOPSIS

	 use RDF::Redland;
	 my $statement1=new RDF::Redland::Statement($statement);
	 my $statement2=new RDF::Redland::Statement($subject,$predicate,$object);
	 ...

	 if($statement->subject->equals($node)) {
	   ...
	 }

DESCRIPTION

       Manipulate RDF statements which comprise three RDF::Redland::Node objects.  Also used for partial statements which can have empty parts and
       are used for matching statements in statement queries of the model - see the RDF::Redland::Model.

CONSTRUCTORS

       new NODE NODE NODE|STATEMENT
	   Create a new statement from nodes or copy an existing statement.

	   If three NODEs are given, make a new statement from them.  Each Node can be a Redland::RDF:Node, a Redland::RDF::URI, a perl URI or a
	   string literal.  Otherwise STATEMENT must be an existing statement to copy.

       clone
	   Copy a RDF::Redland::Statement.

METHODS

       subject [SUBJECT]
	   Get/set the statement subject.  When a RDF::Redland::Node SUBJECT is given, sets the subject of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node subject.

       predicate [PREDICATE]
	   Get/set the statement predicate.  When RDF::Redland::Node PREDICATE is given, sets the predicate of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node predicate.

       object [OBJECT]
	   Get/set the statement object.  When RDF::Redland::Node OBJECT is given, sets the object of the statement, otherwise returns a reference
	   to the statement RDF::Redland::Node object.

       as_string
	   Return the statement formatted as a string (UTF-8 encoded).

       equals STATEMENT
	   Return non zero if this statement is equal to STATEMENT

OLD METHODS

       new_from_nodes SUBJECT PREDICATE OBJECT
	   Create a new RDF::Redland::Statement with the given RDF::Redland::Node objects as parts (or undef when empty for a partial statement).
	   Use instead:

	     $a=new RDF::Redland::Statement($subject, $predicate, $object);

       new_from_statement STATEMENT
	   Create a new RDF::Redland::Statement object from RDF::Redland::Statement STATEMENT (copy constructor).  Use instead:

	     $s=$old_statement->clone;

SEE ALSO

       RDF::Redland::Node

AUTHOR

       Dave Beckett - http://www.dajobe.org/

perl v5.14.2							    2011-02-04					      RDF::Redland::Statement(3pm)

RDF::Trine::Statement(3pm)				User Contributed Perl Documentation				RDF::Trine::Statement(3pm)

NAME

       RDF::Trine::Statement - Class for triples and triple patterns

VERSION

       This document describes RDF::Trine::Statement version 1.000

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.

       "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.

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.

perl v5.14.2							    2012-06-29						RDF::Trine::Statement(3pm)