code: package it.unibz.inf.ontop.model.vocabulary;
  
  
  import org.apache.commons.rdf.api.IRI;
  import org.apache.commons.rdf.simple.SimpleRDF;
  
  public class RDF {
  
      public static final String PREFIX = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
  
      public final static IRI TYPE;
  
      public final static IRI PROPERTY;
  
      public final static IRI PLAINLITERAL;
  
      public final static IRI XMLLITERAL;
  
      public static final IRI LANGSTRING;
  
      static {
          org.apache.commons.rdf.api.RDF factory = new SimpleRDF();
          TYPE = factory.createIRI(PREFIX + "type");
          PROPERTY = factory.createIRI(PREFIX + "Property");
          XMLLITERAL = factory.createIRI(PREFIX + "XMLLiteral");
          PLAINLITERAL = factory.createIRI(PREFIX + "PlainLiteral");
          LANGSTRING = factory.createIRI(PREFIX + "langString");
      }
  }
  