RDF::Core::Enumerator(3pm) - phpMan

RDF::Core::Enumerator(3pm)     User Contributed Perl Documentation     RDF::Core::Enumerator(3pm)



NAME
       RDF::Core::Enumerator - an object that provides access to a set of statements

SYNOPSIS
         #print content of a model
         my $enumerator = $model->getStmts;
         my $statement = $enumerator->getFirst;
         while (defined $statement) {
           print $statement->getLabel."\n";
           $statement = $enumerator->getNext
         }
         $enumerator->close;

DESCRIPTION
       A set of statements (such as returned by $model->getStmts) is represented by some
       descendant of RDF::Core::Enumerator. Statements can be accessed by calling getNext method
       repeatedly until it returns undef, which means there are no more statements to get.

   Interface
       o   new

           Constructors differ for different implementations of Enumerator, see
           RDF::Core::Enumerator::Memory, RDF::Core::Enumerator::DB_File,
           RDF::Core::Enumerator::Postgres

       o   getFirst

           Returns first statement in Enumerator, resets all preceding getNext calls. Returns
           undef if there is no statement.

       o   getNext

           Returns next statement or undef if there are no more statements.

       o   close

           Releases memory, disk, database cursor or whatever it used to provide the data.

AUTHOR
       Ginger Alliance, rdf AT gingerall.cz

SEE ALSO
        RDF::Core::Enumerator::Memory, RDF::Core::Enumerator::DB_File, RDF::Core::Enumerator::Postgres



perl v5.10.0                                2001-11-13                 RDF::Core::Enumerator(3pm)

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