Examples of com.hp.hpl.jena.rdf.model.Literal

com.hp.hpl.jena.rdf.model.Literal
An RDF Literal.
In RDF2003 literals can be typed. If typed then the literal comprises a datatype, a lexical form and a value (together with an optional xml:lang string). Old style literals have no type and are termed "plain" literals.

Implementations of this interface should be able to support both plain and typed literals. In the case of typed literals the primitive accessor methods such as getInt() determine if the literal value can be coerced to an appropriate java wrapper class. If so then the class is unwrapped to extract the primitive value returned. If the coercion fails then a runtime DatatypeFormatException is thrown.

In the case of plain literals then the primitve accessor methods duplicate the behvaiour of jena1. The literal is internally stored in lexical form but the accessor methods such as getInt will attempt to parse the lexical form and if successful will return the primitive value.

Object (i.e. non-primitive) values are supported. In the case of typed literals then a global TypeMapper registry determines what datatype representation to use for a given Object type. In the case of plain literals then the object will be stored in the lexical form given by its toString method. Factory objects, provided by the application, are needed in that case to covert the lexical form back into the appropriate object type.

    }    
    //reset the label iterator
    labelIter = cls.listLabels(null);
  
    while(labelIter.hasNext()) {
      Literal l = (Literal) labelIter.next();
      OntologyImpl.addSearchTerm(l.toString(), cls);
    }


    // recurse to the next level down
    if (cls.canAs( OntClass.class )  &&  !occurs.contains( cls )) {
      //list subclasses
      for (Iterator i = cls.listSubClasses( true );  i.hasNext(); ) {
        OntClass sub = (OntClass) i.next();


        // we push this expression on the occurs list before we recurse
        occurs.add( cls );
        parseClass(sub, occurs, depth+1);
        occurs.remove( cls );
      }


      //list instances
      for (Iterator i=cls.listInstances(); i.hasNext(); ) {
        //add search terms for each instance


        //list labels
        Individual individual = (Individual) i.next();
        for (Iterator j=individual.listLabels(null); j.hasNext();) {
          Literal l = (Literal) j.next();
          OntologyImpl.addSearchTerm(l.toString(), individual);
        }
      }
    }
  }

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      if (resource instanceof OntClass) {
        //get subclasses
        for (Iterator i=((OntClass)resource).listSubClasses(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
        //get individuals
        for (Iterator i=((OntClass)resource).listInstances(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof Individual) {
        for (Iterator i=resource.listSameAs(); i.hasNext();) {  
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }    
        }
      }
    }

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    while (iter.hasNext()) {
      OntResource resource = (OntResource) iter.next();


      //listLabels
      for (Iterator i=resource.listLabels(null); i.hasNext();) {
        Literal l = (Literal) i.next();
        synonyms.put(l.toString(), "1");
      }
    
      if (resource instanceof Individual) {
      //get all individuals same as this one
        for (Iterator i=resource.listSameAs(); i.hasNext();) {
          Individual individual = (Individual) i.next();
          //add labels
          for (Iterator j =individual.listLabels(null); j.hasNext();) {
            Literal l = (Literal) i.next();
            synonyms.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof OntClass) {
        //list equivalent classes
        for (Iterator i=((OntClass)resource).listEquivalentClasses();
          i.hasNext();) {
          OntClass equivClass = (OntClass) i.next();
          //add labels
          for (Iterator j=equivClass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            synonyms.put(l.toString(), "1");
          }
        }
      }
    }

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        try {
          ResultSet results = qexec.execSelect();
          while (results.hasNext()) {
            QuerySolution soln = results.nextSolution();
            try {
              Literal u = soln.getLiteral("user");
//              System.err.println("user: "+u.getString());
              Literal s = soln.getLiteral("software");
//              System.err.println("software: "+s);
              Calendar d = ((XSDDateTime) soln.getLiteral("date")
                  .getValue()).asCalendar();
//              System.err.println("date: "+d);
              
              if (u.getString().equals(user)
                  && s.getString().equals(software)
                  && d.before(Calendar.getInstance())) {
                return true;
              }
            } catch (JenaException e) {
              // ignore

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    }    
    //reset the label iterator
    labelIter = cls.listLabels(null);
  
    while(labelIter.hasNext()) {
      Literal l = (Literal) labelIter.next();
      OntologyImpl.addSearchTerm(l.toString(), cls);
    }


    // recurse to the next level down
    if (cls.canAs( OntClass.class )  &&  !occurs.contains( cls )) {
      //list subclasses
      for (Iterator i = cls.listSubClasses( true );  i.hasNext(); ) {
        OntClass sub = (OntClass) i.next();


        // we push this expression on the occurs list before we recurse
        occurs.add( cls );
        parseClass(sub, occurs, depth+1);
        occurs.remove( cls );
      }


      //list instances
      for (Iterator i=cls.listInstances(); i.hasNext(); ) {
        //add search terms for each instance


        //list labels
        Individual individual = (Individual) i.next();
        for (Iterator j=individual.listLabels(null); j.hasNext();) {
          Literal l = (Literal) j.next();
          OntologyImpl.addSearchTerm(l.toString(), individual);
        }
      }
    }
  }

View Full Code Here

      if (resource instanceof OntClass) {
        //get subclasses
        for (Iterator i=((OntClass)resource).listSubClasses(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
        //get individuals
        for (Iterator i=((OntClass)resource).listInstances(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof Individual) {
        for (Iterator i=resource.listSameAs(); i.hasNext();) {  
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }    
        }
      }
    }

View Full Code Here

    while (iter.hasNext()) {
      OntResource resource = (OntResource) iter.next();


      //listLabels
      for (Iterator i=resource.listLabels(null); i.hasNext();) {
        Literal l = (Literal) i.next();
        synonyms.put(l.toString(), "1");
      }
    
      if (resource instanceof Individual) {
      //get all individuals same as this one
        for (Iterator i=resource.listSameAs(); i.hasNext();) {
          Individual individual = (Individual) i.next();
          //add labels
          for (Iterator j =individual.listLabels(null); j.hasNext();) {
            Literal l = (Literal) i.next();
            synonyms.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof OntClass) {
        //list equivalent classes
        for (Iterator i=((OntClass)resource).listEquivalentClasses();
          i.hasNext();) {
          OntClass equivClass = (OntClass) i.next();
          //add labels
          for (Iterator j=equivClass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            synonyms.put(l.toString(), "1");
          }
        }
      }
    }

View Full Code Here

    }    
    //reset the label iterator
    labelIter = cls.listLabels(null);
  
    while(labelIter.hasNext()) {
      Literal l = (Literal) labelIter.next();
      OntologyImpl.addSearchTerm(l.toString(), cls);
    }


    // recurse to the next level down
    if (cls.canAs( OntClass.class )  &&  !occurs.contains( cls )) {
      //list subclasses
      for (Iterator i = cls.listSubClasses( true );  i.hasNext(); ) {
        OntClass sub = (OntClass) i.next();


        // we push this expression on the occurs list before we recurse
        occurs.add( cls );
        parseClass(sub, occurs, depth+1);
        occurs.remove( cls );
      }


      //list instances
      for (Iterator i=cls.listInstances(); i.hasNext(); ) {
        //add search terms for each instance


        //list labels
        Individual individual = (Individual) i.next();
        for (Iterator j=individual.listLabels(null); j.hasNext();) {
          Literal l = (Literal) j.next();
          OntologyImpl.addSearchTerm(l.toString(), individual);
        }
      }
    }
  }

View Full Code Here

      if (resource instanceof OntClass) {
        //get subclasses
        for (Iterator i=((OntClass)resource).listSubClasses(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
        //get individuals
        for (Iterator i=((OntClass)resource).listInstances(); i.hasNext();) {
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof Individual) {
        for (Iterator i=resource.listSameAs(); i.hasNext();) {  
          OntResource subclass = (OntResource) i.next();
          for (Iterator j=subclass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            subclasses.put(l.toString(), "1");
          }    
        }
      }
    }

View Full Code Here

    while (iter.hasNext()) {
      OntResource resource = (OntResource) iter.next();


      //listLabels
      for (Iterator i=resource.listLabels(null); i.hasNext();) {
        Literal l = (Literal) i.next();
        synonyms.put(l.toString(), "1");
      }
    
      if (resource instanceof Individual) {
      //get all individuals same as this one
        for (Iterator i=resource.listSameAs(); i.hasNext();) {
          Individual individual = (Individual) i.next();
          //add labels
          for (Iterator j =individual.listLabels(null); j.hasNext();) {
            Literal l = (Literal) i.next();
            synonyms.put(l.toString(), "1");
          }
        }
      } else if (resource instanceof OntClass) {
        //list equivalent classes
        for (Iterator i=((OntClass)resource).listEquivalentClasses();
          i.hasNext();) {
          OntClass equivClass = (OntClass) i.next();
          //add labels
          for (Iterator j=equivClass.listLabels(null); j.hasNext();) {
            Literal l = (Literal) j.next();
            synonyms.put(l.toString(), "1");
          }
        }
      }
    }

View Full Code Here

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