public void SetUp()
{
// Set up sum view and a test child view
EventType type = WeightedAverageView.CreateEventType(SupportStatementContextFactory.MakeContext(), null, 1);
WeightedAverageViewFactory factory = new WeightedAverageViewFactory();
factory.FieldNameX = SupportExprNodeFactory.MakeIdentNodeMD("Price");
factory.EventType = type;
factory.FieldNameWeight = SupportExprNodeFactory.MakeIdentNodeMD("Volume");
_myView = new WeightedAverageView(factory, SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext());
_childView = new SupportBeanClassView(typeof(SupportMarketDataBean));
_myView.AddView(_childView);
}
public void TestCanReuse()
{
_factory.SetViewParameters(_viewFactoryContext, TestViewSupport.ToExprListMD(new Object[] { "Price", "Volume" }));
_factory.Attach(SupportEventTypeFactory.CreateBeanType(typeof(SupportMarketDataBean)), SupportStatementContextFactory.MakeContext(), null, null);
Assert.IsFalse(_factory.CanReuse(new FirstElementView(null)));
EventType type = WeightedAverageView.CreateEventType(SupportStatementContextFactory.MakeContext(), null, 1);
WeightedAverageViewFactory factoryTwo = new WeightedAverageViewFactory();
factoryTwo.FieldNameX = SupportExprNodeFactory.MakeIdentNodeMD("Price");
factoryTwo.EventType = type;
factoryTwo.FieldNameWeight = SupportExprNodeFactory.MakeIdentNodeMD("Price");
Assert.IsFalse(_factory.CanReuse(new WeightedAverageView(factoryTwo, SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext())));
factoryTwo.FieldNameWeight = SupportExprNodeFactory.MakeIdentNodeMD("Volume");
Assert.IsTrue(_factory.CanReuse(new WeightedAverageView(factoryTwo, SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext())));
}
public void Attach(EventType parentEventType, StatementContext statementContext, ViewFactory optionalParentFactory, IList <ViewFactory> parentViewFactories)
{
ExprNode[] validated = ViewFactorySupport.Validate(ViewName, parentEventType, statementContext, _viewParameters, true);
if (validated.Length < 2)
{
throw new ViewParameterException(ViewParamMessage);
}
if ((!validated[0].ExprEvaluator.ReturnType.IsNumeric()) || (!validated[1].ExprEvaluator.ReturnType.IsNumeric()))
{
throw new ViewParameterException(ViewParamMessage);
}
_fieldNameX = validated[0];
_fieldNameWeight = validated[1];
_additionalProps = StatViewAdditionalProps.Make(validated, 2, parentEventType);
_eventType = WeightedAverageView.CreateEventType(statementContext, _additionalProps, _streamNumber);
}