Examples of com.google.code.gaeom.ObjectStore

com.google.code.gaeom.ObjectStore
The ObjectStore represents the mapping between the application data objects and the appengine datastore. Meta-data that represents the mapping is cached at this level as well as instances that are marked with the {@link com.google.code.gaeom.annotation.Cached} annotation. Typical usage of this class is to create a singleinstance for the JVM and re-use it. For convenience, you may decide to use the {@link Singleton} instance:
```
 ObjectStoreSession oss = ObjectStore.Singleton.get().beginSession(); 
```
Most interaction with the system is performed with the {@link ObjectStoreSession} class.Instances of this class also register classes you will be using with their kind-names in the datastore. Registration is optional - the system will generate names based on the fully qualified class name for you. Registration must be performed before the classes are accessed. @author Peter Murray

  }


  @Test
  public void testLoadSingleKey()
  {
    ObjectStore os = ObjectStore.Factory.create();


    Key key = os.beginSession().store(new X()).now();


    assertEquals(X.class, os.beginSession().load(key).now().getClass());
  }

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  }


  @Test
  public void testLoadMultipleKeys()
  {
    ObjectStore os = ObjectStore.Factory.create();


    List<Key> keys = os.beginSession().store(new X(), new X(), new X()).now();


    assertEquals(3, Lists.newArrayList(os.beginSession().load(keys).now()).size());
  }

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  }


  @Test
  public void testRefreshSingleKey()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X x = new X();
    x.blah = "fred";
    Key key = oss.store(x).now();
    x.blah = "mary";
    assertEquals("mary", oss.load(key).<X> now().blah);

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  }


  @Test
  public void testRefreshSingleKey2()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X x = new X();
    x.blah = "fred";
    Key key = oss.store(x).now();
    x.blah = "mary";
    assertEquals("mary", oss.load(key).<X> now().blah);

View Full Code Here

  }


  @Test
  public void testRefreshMultipleKeys()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X x1 = new X();
    x1.blah = "fred1";
    X x2 = new X();
    x2.blah = "fred2";
    X x3 = new X();

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  }


  @Test
  public void testRefreshMultipleKeys2()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X x1 = new X();
    x1.blah = "fred1";
    X x2 = new X();
    x2.blah = "fred2";
    X x3 = new X();

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  }


  @Test
  public void testLoadSingleParentedStringId()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X parent = new X();
    oss.store(parent).now();
    oss.store(new X()).id("a").parent(parent).now();


    assertEquals(X.class, oss.load(X.class).id("a").parent(parent).now().getClass());

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  }


  @Test
  public void testLoadMultipleParentedStringId()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();
    X parent = new X();
    oss.store(parent).now();
    oss.store(new X(), new X(), new X()).ids("a", "b", "c").parent(parent).now();


    assertEquals(3, oss.load(X.class).ids("a", "b", "c").parent(parent).now().size());

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  public void testSharedCaching()
  {
    TestCache tc = new TestCache();
    tc.name = "Fred";
    
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss1 = os.beginSession();
    
    Key key = oss1.store(tc).now();
    
    ObjectStoreSession oss2 = os.beginSession();


    TestCache tc2 = (TestCache)oss2.load(key).now();
    
    assertTrue("same instance", tc == tc2);
  }

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    A a = new A();


    a.name = "Fred";
    a.b.name = "Flintstone";


    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    Key key = oss.store(a).now();


    ObjectStoreSession oss2 = os.beginSession();


    A a2 = (A) oss2.load(key).now();


    assertEquals(a.name, a2.name);
    assertNotNull(a2.b);

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