Examples of com.google.code.gaeom.ObjectStoreSession

com.google.code.gaeom.ObjectStoreSession
The main point of interaction with the framework, ObjectStoreSession is typically scoped at the request level. Within an ObjectStoreSession, object identity will be guaranteed consistent. That is, if you retrieve an object and then, by virtue of a future query retrieve the same object, the framework will return the same instance rather than a duplicate copy. Each ObjectStoreSession is associated with an ObjectStore that caches all of the mapping metadata and the {@link com.google.code.gaeom.annotation.Cached} annotated instances. @author Peter Murray


  @Test(expected = IllegalArgumentException.class)
  public void testDetectStoreUnactivated()
  {
    Key key = load();
    ObjectStoreSession oss2 = os.beginSession();
    A a = oss2.load(key).activate(0).now();


    a.b.name = "bob";
    oss2.store(a.b).now();
  }

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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();


    assertEquals(100, oss.find(Foo.class).count().now().intValue());


    assertEquals(50, oss.find(Foo.class).filter("value", Op.LessThan, 50).count().now().intValue());
    assertEquals(51, oss.find(Foo.class).filter("value", Op.LessThanOrEqualTo, 50).count().now().intValue());
    assertEquals(1, oss.find(Foo.class).filter("value", Op.EqualTo, 50).count().now().intValue());
    assertEquals(99, oss.find(Foo.class).filter("value", Op.NotEqualTo, 50).count().now().intValue());
    assertEquals(24, oss.find(Foo.class).filter("value", Op.GreaterThan, 75).count().now().intValue());
    assertEquals(25, oss.find(Foo.class).filter("value", Op.GreaterThanOrEqualTo, 75).count().now().intValue());
  }

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    Foo foo= new Foo();
    foo.values.add("Foo");
    foo.values.add("Bar");
    foo.values.add("Bas");
    
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    oss.store(foo).now();
    
    List<String> orig = foo.values;
    foo.values = null;
    
    oss.refresh(foo).now();
    
    assertEquals(orig, foo.values);
  }

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    p.phones.add(new Phone(207, 444, 3333));
    p.phones.add(new Phone(207, 686, 7777));
    p.phones.add(new Phone(207, 555, 7777));
    p.phones.get(1).prefix = null;  // prove out the rectangulation of the thing
    
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    oss.store(p).now();
    
    List<Phone> orig = p.phones;
    p.phones = null;
    
    oss.refresh(p).now();
    
    assertEquals(orig, p.phones);
  }

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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 testReStoring()
  {
    Foo foo = new Foo("Fred Flintstone");
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    
    oss.store(foo).now();
    
    foo.name = "Barney Rubble";
    
    oss.store(foo).now();
    
    List<Foo> foos = Lists.newArrayList(oss.find(Foo.class).now());
    assertEquals(1, foos.size());
    assertEquals(foo, foos.get(0));
  }

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  @Test
  public void testParenting()
  {
    Node node = create(3, 3);
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    oss.store(node).now();


    testParent(oss, node, null);
  }

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  public void testPolymorphicSingleRelationship()
  {
    Foo foo = new Foo();
    foo.bar1 = new Bar1();
    foo.bar2 = new Bar2();
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    
    oss.store(foo).now();
    
    foo.bar1 = null;
    foo.bar2 = null;
    
    oss.refresh(foo).now();
    
    assertTrue(foo.bar1 instanceof Bar1);
    assertTrue(foo.bar2 instanceof Bar2);
  }

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    foo.bars.add(new Bar1());
    foo.bars.add(new Bar2());
    foo.bars.add(new Bar1());
    foo.bars.add(new Bar2());
    
    ObjectStoreSession oss = ObjectStore.Factory.create().beginSession();
    
    oss.store(foo).now();
    
    foo.bars = null;
    
    oss.refresh(foo).now();
    
    assertEquals(4, foo.bars.size());
    assertTrue(foo.bars.get(0) instanceof Bar1);
    assertTrue(foo.bars.get(1) instanceof Bar2);
    assertTrue(foo.bars.get(2) instanceof Bar1);

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