phpman > perldoc > 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 *NODE*s 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/