@Override
public Iterable<QueryOptimizer> getOptimizers() {
    return Arrays.asList(
            new BindingAssigner(),
            new ConstantOptimizer(strategy),
            new CompareOptimizer(),
            new ConjunctiveConstraintSplitter(),
            new DisjunctiveConstraintOptimizer(),
            new SameTermFilterOptimizer(),
            new QueryModelNormalizer(),
            new HalyardQueryJoinOptimizer(statistics),
            new IterativeEvaluationOptimizer(),
            new HalyardFilterOptimizer(),
            new OrderLimitOptimizer());
}