kendall

{
"service-discovery" : {
"response-mimetype" : [ "text/json", "application/rdf+xml", "application/x-turtle", "application/x-ntriples" ],
     "endpoint" : { 
             "http-methods" : [ "GET" ], 
             "url" : "http://foo:8080/"
                  }
                     },
  "knowledge-bases" : [ { 
             "name" : "wine",

kendall

// let's edit our book...maybe we changed the title and published as a PDF
aNewBook.setTitle("Return of the Empire");
  
// create a new manifestation
Manifestation aPDFManifestation = new Manifestation();
aPDFManifestation.setIssued(new Date());
// set the dc:type attribute
aPDFManifestation.setType(URI.create("http://purl.oreilly.com/product-types/PDF"));
          
aNewBook.setEmbodiments(Arrays.asList(aPDFManifestation));

kendall

Book aBook = aManager.find(Book.class, URI.create("urn:x-domain:oreilly.com:product:9780596514129.IP"));
  
// prints: Switching to the Mac: The Missing Manual, Leopard Edition
System.err.println(aBook.getTitle());
  
// prints: O'Reilly Media / Pogue Press
System.err.println(aBook.getPublisher());

kendall

EntityManager aManager = Persistence.createEntityManagerFactory("oreilly")
                                    .createEntityManager();

kendall

Empire.init(new OpenRdfEmpireModule());

kendall

@OneToMany(fetch = FetchType.LAZY,
           cascade = {CascadeType.PERSIST, CascadeType.MERGE})
private Collection<Manifestation> mEmbodiments = new HashSet<Manifestation>();

kendall

private String title;
private String publisher;
private Date issued;

kendall

// ... annotations ...
public class Book implements SupportsRdfId

kendall

@Entity
public class Book

kendall

// now we can delete our new book
aManager.remove(aNewBook);
          
// false!
System.err.println(aManager.contains(aNewBook));
          
// but the new manifestation still exists, since we did not specify that deletes should cascade...
          
// true!
System.err.println(aManager.contains(aPDFManifestation));