private static void close(AutoCloseable closable) {
try {
if (closable != null) {
closable.close();
closable = null;
}
} catch (Exception sqle) {
sqle.printStackTrace();
}
}
/** {@inheritDoc} */
@Override
public void close() {
Iterator<T> i;
if ((i = iter) != null) {
iter = null;
if (i instanceof AutoCloseable) {
try {
((AutoCloseable) i).close();
} catch (Exception e) {
throw new IgniteException(e);
}
}
}
}