예제 #1
0
  @Test
  public void testLazyListRetrievalPerformance() throws InterruptedException, ExecutionException {
    EntityManagerSimpleJPA em = (EntityManagerSimpleJPA) factory.createEntityManager();

    Query query;
    List<MyTestObject> obs;

    long start = System.currentTimeMillis();
    int numItems = 120;
    Future future = null;
    for (int i = 0; i < numItems; i++) {
      MyTestObject object = new MyTestObject();
      object.setName("Scooby doo");
      object.setAge(i);
      System.out.println("persisting " + i);
      future = em.persistAsync(object);
    }

    // let them save
    System.out.println("Waiting for all persists to complete.");
    future.get();
    long duration = System.currentTimeMillis() - start;
    printAndLog("duration of persists=" + duration);

    start = System.currentTimeMillis();
    System.out.println("querying for all objects...");
    query = em.createQuery("select o from MyTestObject o ");
    obs = query.getResultList();
    for (MyTestObject ob : obs) {
      System.out.println("ob=" + ob);
    }
    duration = System.currentTimeMillis() - start;
    printAndLog("duration of retreival and prints=" + duration);

    start = System.currentTimeMillis();
    System.out.println("querying for all objects...");
    query = em.createQuery("select o from MyTestObject o ");
    obs = query.getResultList();
    for (MyTestObject ob : obs) {
      System.out.println("ob=" + ob);
    }
    duration = System.currentTimeMillis() - start;
    printAndLog("duration of retreival and prints after first load=" + duration);

    em.close();
  }
예제 #2
0
  @Test
  public void testPutQueryDelete() throws ExecutionException, InterruptedException {
    int numItems = 1;
    String x;
    EntityManagerSimpleJPA em = (EntityManagerSimpleJPA) factory.createEntityManager();
    PerformanceTestObject o = new PerformanceTestObject();
    o.setS1("first to create domain");
    em.persist(o);
    StopWatch stopWatch = new StopWatch();

    String s1a = "attribute1";
    String s2a = "attribute2";
    Future<PerformanceTestObject> lastFuture = null;
    stopWatch.start();
    for (int i = 0; i < numItems; i++) {
      o = new PerformanceTestObject();
      o.setS1(s1a);
      o.setS2(s2a);
      lastFuture = em.persistAsync(o);
    }
    lastFuture.get(); // not 100% accurate, but good enough
    stopWatch.stop();
    System.out.println(
        "puts duration="
            + stopWatch.getTime()
            + ", "
            + em.getTotalOpStats().getPuts()
            + " items put.");

    Thread.sleep(5000);

    stopWatch.reset();
    stopWatch.start();
    Query query = em.createQuery("select o from PerformanceTestObject o");
    List<PerformanceTestObject> resultList = query.getResultList();
    System.out.println("iterating result list...");
    int i = 0;
    for (PerformanceTestObject performanceTestObject : resultList) {

      i++;
      if (i % 100 == 0) {
        System.out.println(i);
      }
    }
    stopWatch.stop();
    System.out.println(
        "query ALL duration="
            + stopWatch.getTime()
            + ", "
            + em.getTotalOpStats().getGets()
            + " items got.");

    stopWatch.reset();
    stopWatch.start();
    System.out.println("Deleting ALL...");
    for (PerformanceTestObject performanceTestObject : resultList) {
      lastFuture = em.removeAsync(o);
    }
    lastFuture.get();
    stopWatch.stop();
    System.out.println(
        "delete duration=" + stopWatch.getTime() + ", " + resultList.size() + " items deleted.");
    System.out.println("sleeping...");
    Thread.sleep(30000);

    em.close();
  }