NAME

RDF::Core::Evaluator - gets a query object that RDF::Core::Query parsed and evaluates the query.

SYNOPSIS

  my %namespaces = (Default => 'http://myApp.gingerall.org/ns#',
                    ns     => 'http://myApp.gingerall.org/ns#',
                   );
  my $evaluator = new RDF::Core::Evaluator
    (Model => $model,            #an instance of RDF::Core::Model
     Factory => $factory,        #an instance of RDF::Core::NodeFactory
     Namespaces => \%namespaces,
    );
  my $query = new RDF::Core::Query(Evaluator=> $evaluator);

DESCRIPTION

The evaluator is just to be created and passed to query object, that uses it to evaluate the query.

Interface

new(%options)
Available options are:
- Model
  RDF::Core::Model object that contains data to be queried.
- Functions
  RDF::Core::Function object is a functions library.
- Factory
  RDF::Core::NodeFactory object, that produces resource and literal objects.
- Namespaces
  A hash containing namespace prefixes as keys and URIs as values. See more in paragraph Names and URIs in RDF::Core::Query,
- Row
  A code reference that is called every time a result row is found. The row elements are passed as parameters of the call. They can be undefined, RDF::Core::Resource or RDF::Core::Literal value. If Row is omitted, result is returned as a reference to array of rows

LICENSE

This package is subject to the MPL (or the GPL alternatively).

AUTHOR

Ginger Alliance, rdf@gingerall.cz

CPAN RT