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

com.hp.hpl.jena.rdf.model.Resource
An RDF Resource. Resource instances when created may be associated with a specific model. Resources created by a model will refer to that model, and support a range of methods, such as getProperty() and addProperty() which will access or modify that model. This enables the programmer to write code in a compact and easy style.
Resources created by ResourceFactory will not refer to any model, and will not permit operations which require a model. Such resources are useful as general constants.
This interface provides methods supporting typed literals. This means that methods are provided which will translate a built in type, or an object to an RDF Literal. This translation is done by invoking the toString() method of the object, or its built in equivalent. The reverse translation is also supported. This is built in for built in types. Factory objects, provided by the application, are used for application objects.

This interface provides methods for supporting enhanced resources. An enhanced resource is a resource to which the application has added behaviour. RDF containers are examples of enhanced resources built in to this package. Enhanced resources are supported by encapsulating a resource created by an implementation in another class which adds the extra behaviour. Factory objects are used to construct such enhanced resources.

   * @param uri the (named) root of the XML output
   * @return XML Document
   */


  public Document drop(Model model, URI uri) throws Exception {
    Resource rez = model.getResource(uri.toString());
    return drop(rez);
  }

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            }
            continue; // All is well, keep what we have
          }


          Node nodeVal;
          Resource valType = getObjectType(triple.getPredicate());
          // This attribute points to a ldap node
          if (LdapMap.ObjectProperty.equals(valType))
            nodeVal = createLdapNode((String) val);
          else if (LdapMap.EmailProperty.equals(valType))
            nodeVal = Node.createURI("mailto:" + val);

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      /* Prebind object (if possible) */
      Node theObject = triple.getObject();
      if (theObject.isVariable() && binding.contains(theObject.getName()))
        theObject = binding.get(theObject.getName());


      Resource valType = getObjectType(triple.getPredicate());
      if (theObject.isVariable())
        toGet.add(attr);
      else // TODO if pred is type, map values to ldap equivalent
      {
        toGet.add(attr); /* TODO dump this! stupid! Prebinding work around */

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  private Resource getSubject(Property property, RDFNode object)
  {
    ResIterator found = config.listSubjectsWithProperty(property, object);
    if (!found.hasNext())
      return null;
    Resource foundSubject = found.nextResource();
    found.close();
    return foundSubject;
  }

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    return foundSubject;
  }


  private Resource getObjectType(Node predicate)
  {
    Resource subj = getSubject(LdapMap.property, config
        .asRDFNode(predicate));
    if (subj == null)
      return null;
    Statement s = subj.getProperty(RDF.type);
    if (s == null)
      return null;
    return s.getResource();
  }

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      log.warn("There is more than one map in the config file");
    
    StmtIterator si = map.listProperties(DbMap.mapsClass);
    while (si.hasNext())
    {
      Resource aClass = si.nextStatement().getResource();
      initFromClass(aClass);
    }  
    si.close();
    si = configModel.listStatements(null, DbMap.foreignKey, (RDFNode) null);
    while (si.hasNext())

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   */
  private void initFromClass(Resource aClass) throws ConfigException
  {
    if (class2table.containsKey(aClass)) return; // already done
    
    Resource db = aClass.getProperty(DbMap.database).getResource();
    
    Database database = getDatabase(db);
        
    Table table = new Table(aClass, database);
    class2table.put(aClass, table);
    ResIterator ri = aClass.getModel().listSubjectsWithProperty(RDFS.domain, aClass);
    while (ri.hasNext())
    {
      Resource prop = ri.nextResource();
      Col col = new Col(prop, table);
      prop2col.put(prop, col);
    }
    StmtIterator si = aClass.listProperties(DbMap.primaryKey);
    while (si.hasNext())
    {
      Resource primKey = si.nextStatement().getResource();
      Col primCol = prop2col.get(primKey);
      if (primCol == null)
        throw new ConfigException("Primary key unknown: " + primKey);
      else
        primCol.setIsPrimaryKey(true);

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      if (predicate.equals(RDF.Nodes.type)) // RDB map is staticly typed, so this is not that useful
      {
        if (object.isConcrete())
        {
          Resource theClass = (Resource) configModel.asRDFNode(object);
          Table table = class2table.get(theClass);
          if (table == null)
            throw new InconsistentException("Unknown class: " + object);
          checkClasses(subject, theClass, nodeToClass);
          nodeToClass.put(subject, theClass);
          query.add(subject, table); // Just add the subject and table to the query.
        }
        else
          throw new UnanswerableException("No type matches (yet)");
        continue;
      }
      
      Resource prop = (Resource) configModel.getRDFNode(predicate);
      if (!prop2col.containsKey(prop))
        throw new InconsistentException("Unknown predicate: " + triple);


      /* Domain / Range checks -- subjects have types specific to tables, objects are literals */
      checkClasses(subject, prop.getProperty(RDFS.domain).getResource(), nodeToClass);
      checkClasses(object, RDFS.Literal, nodeToClass);
      
      //if (subject.isConcrete())
      //  throw new UnanswerableException("Concrete subject given: " + triple);

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    {
      nodeToClass.put(node, aClass);
      return;
    }
    
    Resource existingClass = (Resource) nodeToClass.get(node);
    if (!existingClass.equals(aClass))
      throw new InconsistentException("Inconsistent classes for " + node + 
          ": both " + existingClass + " and " + aClass);
  }

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  public void testExtractConfig() throws SQLException, ClassNotFoundException
  {
    Model config = ExtractConfig.process("jdbc:hsqldb:mem:test", "org.hsqldb.jdbcDriver", "urn:ex:", "sa", "", new String[]{"TABLE1", "TABLE2"}, conn.getMetaData());
    
    Resource table1 = config.createResource("urn:ex:TABLE1");
    Resource table2 = config.createResource("urn:ex:TABLE2");
    Resource map = config.createResource("urn:ex:map");
    assertTrue("Found table1", config.contains(table1, RDF.type, RDFS.Class));
    assertTrue("Found table2", config.contains(table2, RDF.type, RDFS.Class));
    assertTrue("Map maps table1", config.contains(map, DbMap.mapsClass, table1));
    
    config.write(System.out, "RDF/XML-ABBREV");

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