@Override
protected void getRootAsync(FutureWithCallback<Object> future) {
long rootId = _jdbm.getRoot(ROOT);
byte[] data = null;
if (rootId == 0)
future.set(null);
else {
data = _jdbm.fetch(rootId);
if (data == null)
throw new RuntimeIOException(Strings.CORRUPTED_STORE);
Object root = _reader.read(data);
_reader.readVersions();
_reader.importVersions();
future.set(root);
}
}
