@Override
protected List<? extends OperatorFactory> createOperatorFactories()
{
OperatorFactory tableScanOperator = createTableScanOperator(0, "orders", "orderstatus", "totalprice");
HashAggregationOperatorFactory aggregationOperator = new HashAggregationOperatorFactory(1,
ImmutableList.of(tableScanOperator.getTypes().get(0)),
Ints.asList(0),
Step.SINGLE,
ImmutableList.of(aggregation(DOUBLE_SUM, ImmutableList.of(new Input(1)), Optional.<Input>absent(), Optional.<Input>absent(), 1.0)),
100_000);