package com.google.code.gaeom.test;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.Key;
import com.google.code.gaeom.ObjectStore;
import com.google.code.gaeom.ObjectStoreSession;
import com.google.code.gaeom.annotation.Child;
import com.google.code.gaeom.annotation.Parent;
import com.google.code.gaeom.annotation.Parent.FilterPolicy;
/**
* @author Peter Murray <gaeom@pmurray.com>
*/
public class TestParentRelationshipEncoding extends AbstractLocalTest
{
public static class A
{
@Child
B b;
}
public static class B
{
@Parent(FilterPolicy.NoFilter)
A a;
}
@Test
public void testParenting()
{
A a= new A();
a.b = new B();
a.b.a = a;
ObjectStore os = ObjectStore.Factory.create();
Key key = os.beginSession().store(a).now();
A a2 = os.beginSession().load(key).now();
assertEquals(a2, a2.b.a);
}
@Test
public void testEntityIsEmpty() throws Exception
{
A a= new A();
a.b = new B();
a.b.a = a;
ObjectStore os = ObjectStore.Factory.create();
ObjectStoreSession oss = os.beginSession();
oss.store(a).now();
Entity e = DatastoreServiceFactory.getDatastoreService().get(oss.getKey(a.b));
//should have no properties b/c parent is encoded in key
assertEquals(0, e.getProperties().keySet().size());
}
}