this was actually covered in Google I/O App Engine fireside chat. Max Ross explained that it is the tradeoff of the App Engine and how it works with automatic scalability and such. I don't think there is any expectation of a fix as it is property of the system. Check it out for yourself at:
http://code.google.com/events/io/2010/sessions/fireside-chat-app-engine.html On Jun 6, 9:32 pm, Trung <gwtdevelo...@gmail.com> wrote: > I have a simple test as below > > public class TestDS extends TestCase{ > private final LocalServiceTestHelper helper = > new LocalServiceTestHelper(new > LocalDatastoreServiceTestConfig()); > > @Before > public void setUp() { > helper.setUp(); > } > > @After > public void tearDown() throws Exception{ > Thread.sleep(100); > > helper.tearDown(); > } > > public void testWithoutTransaction() throws Exception{ > DatastoreService ds = > DatastoreServiceFactory.getDatastoreService(); > doTest(ds, null); > } > > public void testWithTransaction() throws Exception{ > DatastoreService ds = > DatastoreServiceFactory.getDatastoreService(); > Transaction txn = ds.beginTransaction(); > doTest(ds, txn); > txn.commit(); > } > > public void doTest(DatastoreService ds, Transaction txn) throws > Exception{ > Key parentKey = KeyFactory.createKey("parent", "default"); > > Entity entity = new Entity("Entity01", parentKey); > entity.setProperty("prop01", "Property 01"); > Key key = ds.put(txn, entity); > > Entity entity2 = ds.get(txn, key); > System.out.println(entity2.getProperty("prop01")); > } > > } > > For the test testWithoutTransaction, it run successful. > > However, the test testWithTransaction, exception > EntityNotFoundException is raised at line > Entity entity2 = ds.get(txn, key); > > Why we can not get the entity we just put into datastore within a > transaction? > Please help. > > Thanks in advance. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
