public void concDelete(ExtObjectContainer oc) throws Exception {
int size = countOccurences(oc, SimpleObject.class);
if (size == 0) { // already deleted
return;
}
Assert.areEqual(ELEMENT_COUNT, size);
ObjectSet os = oc.query(ArrayItem.class);
if (os.size() == 0) { // already deteled
return;
}
Assert.areEqual(1, os.size());
ArrayItem item = (ArrayItem) os.next();
// waits for other threads
Thread.sleep(500);
oc.delete(item);
oc.commit();
assertOccurrences(oc, SimpleObject.class, 0);
}
