• NAME
• SYNOPSIS
• DESCRIPTION
• Interface
• LICENSE
• AUTHOR
• SEE ALSO

NAME

RDF::Core::Model - RDF model

SYNOPSIS

  use RDF::Core::Model;
  use RDF::Core::Storage::Memory;
  use RDF::Core::Statement;

  my $storage = new RDF::Core::Storage::Memory;
  my $model = new RDF::Core::Model (Storage => $storage);
  my $subject = new RDF::Core::Resource('http://www.gingerall.cz/employees/Jim');
  my $predicate = $subject->new('http://www.gingerall.cz/rdfns#name');
  my $object = new RDF::Core::Literal('Jim Brown');
  my $statement = new RDF::Core::Statement($subject, $predicate, $object);

  $model->addStmt($statement);

  print "Model contains ".$model->countStmts."statement(s).\n"

DESCRIPTION

Model provides interface to store RDF statements, ask about them and retrieve them back.

Interface

• new(%options)
  $options is a hash reference, available options are
  • Storage
    a reference to a RDF::Core::Storage implementation

• getOptions
  
• setOptions(\%options)
  
• addStmt($statement)
  Add RDF::Core::Statement instance to Model, unless it already exists there.

• removeStmt($statement)
  Remove statement from Model, if it's there.

• existsStmt($subject,$predicate,$object)
  Check if statement exists, that matches given mask. Parameters can be undefined, every value matches undefined parameter.

• countStmts($subject,$predicate,$object)
  Count matching statements.

• getStmts($subject,$predicate,$object)
  Retrieve matching statements. Returns RDF::Core::Enumerator object.

• getObjects($subject, $predicate)
  Return a reference to an array keeping all object, that are values of specified $predicate for given $subject.

LICENSE

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

AUTHOR

Ginger Alliance, rdf@gingerall.cz

SEE ALSO

RDF::Core::Statement, RDF::Core::Storage, RDF::Core::Serializer, RDF::Core::Parser, RDF::Core::Enumerator