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

new
Constructors differ for different implementations of Enumerator, see RDF::Core::Enumerator::Memory, RDF::Core::Enumerator::DB_File, RDF::Core::Enumerator::Postgres
getFirst
Returns first statement in Enumerator, resets all preceding getNext calls. Returns undef if there is no statement.
getNext
Returns next statement or undef if there are no more statements.
close
Releases memory, disk, database cursor or whatever it used to provide the data.

AUTHOR

Ginger Alliance, rdf@gingerall.cz

NAME

SYNOPSIS

DESCRIPTION

Interface

AUTHOR

SEE ALSO