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RDF::REDLAND::STATEMENT(3PM) - Linux man page online | Library functions

Redland RDF Statement Class.

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2018-03-01
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 v5.26.1 2018-03-01 RDF::Redland::Statement(3pm)
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