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

  {
    Set<EnumObject> objs = Sets.newHashSet();
    for (int ct = 0; ct < 10; ct++)
      objs.add(new EnumObject());


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


    // will get new objects b/c we are using a new session
    Set<EnumObject> result = Sets.newHashSet(os.beginSession().find(EnumObject.class).now());


    assertEquals(objs, result);
  }

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  }


  @Test
  public void testCount()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    List<Foo> foos = Lists.newArrayList();
    for (int ct = 0; ct < 100; ct++)
      foos.add(new Foo(ct));
    oss.store(foos).now();

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  }


  @Test(expected = KeysNotFoundException.class)
  public void testDeleteCommand()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    Tester t1 = new Tester();
    t1.name = "Fred Flintstone";
    Key key = oss.store(t1).now();


    oss.delete(t1).now();


    os.beginSession().load(key).now(); // may not fail because changes not rolled forward see superclass


    assertNull(os.beginSession().load(key).retries(0).now());
  }

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  }


  @Test(expected = KeysNotFoundException.class)
  public void testDeleteCommandLocal()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    Tester t1 = new Tester();
    t1.name = "Fred Flintstone";
    Key key = oss.store(t1).now();


    oss.delete(t1).now();


    os.beginSession().load(key).now(); // may not fail because changes not rolled forward see superclass


    assertNull(oss.load(key).retries(0).now());
  }

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  }


  @Test
  public void demoTest()
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    Gaeom gaeom = new Gaeom();
    gaeom.description = "Supah object-datastore mapping";
    gaeom.rocks = true;


    oss.store(gaeom).id(1).now();


    os.beginSession().load(Gaeom.class).id(1).now();


    os.beginSession().find(Gaeom.class).single().now();


    os.beginSession().find(Gaeom.class).filter("rocks", true).single().now();
  }

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  }


  @Test
  public void testByFilteringForNull() throws Exception
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    A a1 = new A();
    A a2 = new A();
    a2.b = new B();

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  }


  @Test
  public void testByFilteringForNullEmbedded() throws Exception
  {
    ObjectStore os = ObjectStore.Factory.create();
    ObjectStoreSession oss = os.beginSession();


    A2 a1 = new A2();
    A2 a2 = new A2();
    a2.b = new B();

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  }


  @Test
  public void testEvenutalConsistency() throws Exception
  {
    ObjectStore os = ObjectStore.Factory.create();
    Key key = os.beginSession().store(new Foo()).now();
    
    try
    {
      os.beginSession().load(key).retries(0).now();
      assertTrue(false); // should have thrown
    }
    catch (KeysNotFoundException e)
    {
    }
    
    assertTrue(os.beginSession().load(key).retries(0).now() != null);
  }

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  }
  
  @Test
  public void testNameRegistration()
  {
    ObjectStore os = ObjectStore.Factory.create();
    os.register("Foo", Foo.class);


    ObjectStoreSession oss = os.beginSession();
    oss.store(new Foo("Fred Flintstone")).now();
    oss.store(new Foo("Barney Rubble")).now();


    List<Foo> foos = Lists.newArrayList(oss.find(Foo.class).now());
    assertEquals(2, foos.size());

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    a.bs.add(new B("Fred"));
    a.bs.add(null);
    a.bs.add(new B("Sally"));
    
    ObjectStore os = ObjectStore.Factory.create();
    Key key = os.beginSession().store(a).now();
    
    A a2 = os.beginSession().load(key).now();
    
    assertEquals(a.bs, a2.bs);
  }

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com.google.code.gaeom.impl.ObjectStoreImpl

com.google.code.gaeom.test.DemoTest

com.google.code.gaeom.test.TestActivationFilter2

com.google.code.gaeom.test.TestCount

com.google.code.gaeom.test.TestDelete

com.google.code.gaeom.test.TestEmbeddedListWithNulls

com.google.code.gaeom.test.TestEmbedding

com.google.code.gaeom.test.TestEnumEncoder

com.google.code.gaeom.test.TestEvenutalConsistency

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