@Before
public void setUp() throws Exception {
injector = new ModulesBuilder()
.add(new TestModule())
.add(new AggregationImplModule())
.add(new ScalarFunctionModule())
.add(new OperatorModule())
.createInjector();
analyzer = injector.getInstance(Analyzer.class);
planner = injector.getInstance(Planner.class);
}