Пример #1
0
  /**
   * Demonstrates how a Lazy Load exception can occur when processing objects from server that have
   * not been hydrated.
   *
   * @throws Exception
   */
  @Test
  public void testLazy() throws Exception {
    log.info("*** testLazy ***");

    Owner owner = teller.createOwner("joe", "jones", "123");
    owner = teller.openAccount(owner.getId(), "111");
    Owner owner2 = teller.createOwner("jane", "jones", "333");
    owner2 = teller.addOwner(owner2.getId(), "111");

    // get a set of owners that have been lazily loaded
    List<Owner> owners = teller.getOwners(0, 100);
    assertEquals("unexpected number of owners", 2, owners.size());

    try {
      for (Owner o : owners) {
        for (Account a : o.getAccounts()) {
          log.info("account=" + a);
        }
      }
      fail("did not encounter expected exception");
    } catch (LazyInitializationException expected) {
      log.info("encountered expected exception:" + expected);
    }

    // now get them fully loaded
    owners = teller.getOwnersLoaded(0, 100);
    for (Owner o : owners) {
      for (Account a : o.getAccounts()) {
        log.info("account=" + a);
      }
    }
  }
Пример #2
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  /**
   * Demonstrates a fix of the LAZY Load and class leakage problem by using DTOs.
   *
   * @throws Exception
   */
  @Test
  public void testDTO() throws Exception {
    log.info("*** testDTO ***");

    int startCount = teller.getOwnersDTO(0, 100).size();

    Owner owner = teller.createOwner("joe", "jones", "123");
    owner = teller.openAccount(owner.getId(), "111");
    Owner owner2 = teller.createOwner("jane", "jones", "333");
    owner2 = teller.addOwner(owner2.getId(), "111");

    // get DTOs instead
    List<OwnerDTO> owners = teller.getOwnersDTO(0, 100);
    for (OwnerDTO o : owners) {
      log.debug("ownerDTO=" + o);
    }
    assertEquals("unexpected number of owners", startCount + 2, owners.size());
  }
Пример #3
0
  /**
   * Demonstrates a fix for the LAZY Load issue but then shows how persistence classes from the
   * server are being leaked into the client.
   *
   * @throws Exception
   */
  @Test
  public void testPOJO() throws Exception {
    log.info("*** testPOJO ***");

    Owner owner = teller.createOwner("joe", "jones", "123");
    owner = teller.openAccount(owner.getId(), "111");
    Owner owner2 = teller.createOwner("jane", "jones", "333");
    owner2 = teller.addOwner(owner2.getId(), "111");

    // now get the objects fully loaded
    List<Owner> owners = teller.getOwnersLoaded(0, 100);
    for (Owner o : owners) {
      for (Account a : o.getAccounts()) {
        log.info("account=" + a);
      }
      log.debug("addresses=" + o.getAccounts().getClass().getName());
      assertTrue(
          "unexpected collection class",
          o.getAccounts().getClass().getName().contains("hibernate"));
    }

    // now get the objects cleaned of persistence classes
    owners = teller.getOwnersPOJO(0, 100);
    for (Owner o : owners) {
      for (Account a : o.getAccounts()) {
        log.info("account=" + a);
      }
      log.debug("addresses=" + o.getAccounts().getClass().getName());
      assertFalse(
          "unexpected collection class",
          o.getAccounts().getClass().getName().contains("hibernate"));
    }
  }