// a hybrid of "new entity from server" and "id change from server"
// the scenario is that we have a local entity with, say, ID 100
// and the server tells us "here's a new entity. its ID is 100!"
// so we have to move our existing entity out of the way before accepting the remote one.
public void testNewEntityWithConflictingIdFromServer() {
SimpleEntity newRemote = new SimpleEntity();
newRemote.setString("new entity from server");
newRemote.setDate(new Timestamp(1234567L));
newRemote.setInteger(9999);
SimpleEntity.setId(newRemote, 100L);
SimpleEntity existingLocal = new SimpleEntity();
existingLocal.setString("existing local entity");
existingLocal.setDate(new Timestamp(7654321L));
existingLocal.setInteger(8888);
SimpleEntity.setId(existingLocal, 100L);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
dsem.persist(existingLocal);
dsem.flush();
assertNull(esem.find(SimpleEntity.class, existingLocal.getId()));
assertEquals(
dsem.find(SimpleEntity.class, existingLocal.getId()).toString(), existingLocal.toString());
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.created(existingLocal)); // note that the mock
// server will ignore
// this for the purpose
// of this test
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new NewRemoteEntityResponse<SimpleEntity>(newRemote));
performColdSync(expectedClientRequests, fakeServerResponses);
// now the ID of existingLocal (still managed by dsem) should not be 100 anymore
assertFalse(
"Existing id "
+ existingLocal.getId()
+ " should not be the same as new object's ID "
+ newRemote.getId(),
existingLocal.getId() == newRemote.getId());
assertSame(existingLocal, dsem.find(SimpleEntity.class, existingLocal.getId()));
assertEquals(newRemote.toString(), dsem.find(SimpleEntity.class, newRemote.getId()).toString());
assertEquals(newRemote.toString(), esem.find(SimpleEntity.class, newRemote.getId()).toString());
}
public void testDeleteFromClient() {
SimpleEntity entity = new SimpleEntity();
entity.setString("the string value");
entity.setDate(new Timestamp(1234567L));
entity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
// first persist the expected state
esem.persist(entity);
esem.flush();
esem.clear();
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.deleted(entity));
// assuming no conflict, the server deletes the entity and generates the appropriate response
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new DeleteResponse<SimpleEntity>(entity));
performColdSync(expectedClientRequests, fakeServerResponses);
assertNull(esem.find(SimpleEntity.class, entity.getId()));
assertNull(dsem.find(SimpleEntity.class, entity.getId()));
}
public void testNewEntityFromServer() {
SimpleEntity newEntity = new SimpleEntity();
newEntity.setString("the string value");
newEntity.setDate(new Timestamp(1234567L));
newEntity.setInteger(9999);
SimpleEntity.setId(newEntity, 88L);
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
// in this case, the client should make an empty request (both persistence contexts are empty)
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new NewRemoteEntityResponse<SimpleEntity>(newEntity));
performColdSync(expectedClientRequests, fakeServerResponses);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
SimpleEntity newEntityExpected = esem.find(SimpleEntity.class, newEntity.getId());
SimpleEntity newEntityDesired = dsem.find(SimpleEntity.class, newEntity.getId());
assertEquals(newEntityExpected.toString(), newEntity.toString());
assertEquals(newEntityDesired.toString(), newEntity.toString());
assertNotSame(
"Expected State and Desired State instances must be separate",
newEntityExpected,
newEntityDesired);
}
public void testUpdateFromServer() {
SimpleEntity newEntity = new SimpleEntity();
newEntity.setString("the string value");
newEntity.setDate(new Timestamp(1234567L));
newEntity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
// persist this as both the "expected state" from the server and the "desired state" on the
// client
SimpleEntity originalEntityState = esem.merge(newEntity);
esem.flush();
esem.clear();
dsem.persist(originalEntityState);
dsem.flush();
dsem.clear();
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.unchanged(originalEntityState));
// now cook up a server response that says something changed
SimpleEntity.setId(newEntity, originalEntityState.getId());
newEntity.setString("a new string value");
newEntity.setInteger(110011);
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new UpdateResponse<SimpleEntity>(newEntity));
performColdSync(expectedClientRequests, fakeServerResponses);
SimpleEntity changedEntityExpected = esem.find(SimpleEntity.class, newEntity.getId());
SimpleEntity changedEntityDesired = dsem.find(SimpleEntity.class, newEntity.getId());
assertEquals(changedEntityExpected.toString(), newEntity.toString());
assertEquals(changedEntityDesired.toString(), newEntity.toString());
assertNotSame(changedEntityDesired, changedEntityExpected);
}
public void testDeleteFromServer() {
SimpleEntity newEntity = new SimpleEntity();
newEntity.setString("the string value");
newEntity.setDate(new Timestamp(1234567L));
newEntity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
// persist this as both the "expected state" from the server and the "desired state" on the
// client
SimpleEntity originalEntityState = esem.merge(newEntity);
esem.flush();
esem.clear();
dsem.persist(originalEntityState);
dsem.flush();
dsem.clear();
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.unchanged(originalEntityState));
// now cook up a server response that says it got deleted
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new DeleteResponse<SimpleEntity>(newEntity));
performColdSync(expectedClientRequests, fakeServerResponses);
assertNull(esem.find(SimpleEntity.class, newEntity.getId()));
assertNull(dsem.find(SimpleEntity.class, newEntity.getId()));
// finally, ensure the deleted entity is not stuck in the REMOVED state
// (should be NEW or DETACHED; we can verify by trying to merge it)
try {
esem.merge(newEntity);
} catch (IllegalArgumentException e) {
fail("Merging removed entity failed: " + e);
}
try {
dsem.merge(newEntity);
} catch (IllegalArgumentException e) {
fail("Merging removed entity failed: " + e);
}
}
public void testIdChangeFromServer() {
SimpleEntity entity = new SimpleEntity();
entity.setString("the string value");
entity.setDate(new Timestamp(1234567L));
entity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
SimpleEntity originalLocalState = dsem.merge(entity);
long originalId = originalLocalState.getId();
dsem.flush();
dsem.detach(originalLocalState);
assertNull(esem.find(SimpleEntity.class, originalId));
assertEquals(dsem.find(SimpleEntity.class, originalId).toString(), entity.toString());
// Now change the ID and tell the ClientSyncManager it happened
long newId = originalLocalState.getId() + 100;
SimpleEntity.setId(entity, newId);
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.created(originalLocalState));
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new IdChangeResponse<SimpleEntity>(originalId, entity));
performColdSync(expectedClientRequests, fakeServerResponses);
assertNull(esem.find(SimpleEntity.class, originalId));
assertNull(dsem.find(SimpleEntity.class, originalId));
SimpleEntity changedEntityExpected = esem.find(SimpleEntity.class, newId);
SimpleEntity changedEntityDesired = dsem.find(SimpleEntity.class, newId);
assertEquals(changedEntityExpected.toString(), entity.toString());
assertEquals(changedEntityDesired.toString(), entity.toString());
assertNotSame(changedEntityDesired, changedEntityExpected);
}
public void testUpdateFromClient() {
SimpleEntity entity = new SimpleEntity();
entity.setString("the string value");
entity.setDate(new Timestamp(1234567L));
entity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
// first persist the expected state
SimpleEntity originalEntityState = esem.merge(entity);
esem.flush();
esem.clear();
// now make a change and persist the desired state
SimpleEntity.setId(entity, originalEntityState.getId());
entity.setString("this has been updated");
dsem.persist(entity);
dsem.flush();
dsem.clear();
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.updated(entity, originalEntityState));
// the server will respond with confirmation of the update
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
fakeServerResponses.add(new UpdateResponse<SimpleEntity>(entity));
performColdSync(expectedClientRequests, fakeServerResponses);
SimpleEntity changedEntityExpected = esem.find(SimpleEntity.class, entity.getId());
SimpleEntity changedEntityDesired = dsem.find(SimpleEntity.class, entity.getId());
assertEquals(changedEntityExpected.toString(), entity.toString());
assertEquals(changedEntityDesired.toString(), entity.toString());
assertNotSame(changedEntityDesired, changedEntityExpected);
}
public void testConcurrentSyncRequestsRejected() {
SimpleEntity entity = new SimpleEntity();
entity.setString("the string value");
entity.setDate(new Timestamp(1234567L));
entity.setInteger(9999);
ErraiEntityManager esem = csm.getExpectedStateEm();
ErraiEntityManager dsem = csm.getDesiredStateEm();
// first persist the desired state
SimpleEntity clientEntity = dsem.merge(entity);
dsem.flush();
dsem.clear();
Long originalId = clientEntity.getId();
List<SyncRequestOperation<SimpleEntity>> expectedClientRequests =
new ArrayList<SyncRequestOperation<SimpleEntity>>();
expectedClientRequests.add(SyncRequestOperation.created(clientEntity));
// the server creates the entity with a different ID and notifies us of the change
List<SyncResponse<SimpleEntity>> fakeServerResponses =
new ArrayList<SyncResponse<SimpleEntity>>();
SimpleEntity.setId(entity, 1010L);
fakeServerResponses.add(new IdChangeResponse<SimpleEntity>(originalId, entity));
Runnable doDuringSync =
new Runnable() {
boolean alreadyRunning = false;
@Override
public void run() {
if (alreadyRunning) {
fail("Detected recursive call to coldSync()");
}
alreadyRunning = true;
// at this point, ClientSyncManager is in the middle of a coldSync call. for safety, it
// is
// required to fail.
try {
csm.coldSync(
"allSimpleEntities",
SimpleEntity.class,
Collections.<String, Object>emptyMap(),
new RemoteCallback<List<SyncResponse<SimpleEntity>>>() {
@Override
public void callback(List<SyncResponse<SimpleEntity>> response) {
fail("this recursive call to coldSync must not succeed");
}
},
new ErrorCallback<List<SyncResponse<SimpleEntity>>>() {
@Override
public boolean error(
List<SyncResponse<SimpleEntity>> message, Throwable throwable) {
fail("this recursive call to coldSync should have failed synchronously");
throw new AssertionError();
}
});
fail("recursive call to coldSync() failed to throw an exception");
} catch (IllegalStateException ex) {
System.out.println(
"Got expected IllegalStateException. Returning normally so client state assertions can run.");
// expected
}
}
};
performColdSync(expectedClientRequests, fakeServerResponses, doDuringSync);
// now ensure the results of the original sync request were not harmed
assertFalse(csm.isSyncInProgress());
assertEquals(esem.find(SimpleEntity.class, entity.getId()).toString(), entity.toString());
assertEquals(dsem.find(SimpleEntity.class, entity.getId()).toString(), entity.toString());
assertNull(esem.find(SimpleEntity.class, originalId));
assertNull(dsem.find(SimpleEntity.class, originalId));
}