bionic (3) RDF::Redland::Statement.3pm.gz

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/