This spike seeks to demonstrate that we can auto-generate a UI for quote filters, only using slightly modified versions of the Specification pattern that we're currently employing.
Modifications include:
- Adding a method to validate the Specification data (e.g., for a hypothetical
MaxWeightInPoundsspec, we'd validate that theMaxWeightInPounds.MaxPoundsproperty was greater than zero. - Decorating classes and properties with attributes that provide text for the UI, e.g.
[Description("The shipment should not contain perishable items")]
public class NotPerishable {
public bool IsSatisfied(Shipment shipment) {
return !shipment.IsPerishable;
}
}The spike assumes that we'll be storing the specification data in a document or simple key value database, and not in a relational database.
- The UI code sucks pretty bad, and needs help
- Some of the type conversion code is awful. I know we can do better.
- Some serious javascript refactoring is in order. I chose knockout for the UI, but there may be a better choice.
- It should be possible to create custom UI for a particular spec, if needed