Refactoring Primitive Obsession

[gregorriegler]

Hi,

I am trying to get started writing Recipes and struggling.
What I would like to do is detect a primitive collection such as List<Product>
and turn it into a ProductList that encapsulates the list via composition.

For that I see the following steps necessary:

1. Detect and remember all methods of List<Product> that were actually used such as add, and remove.
2. Create a new domain-specific Class ProductList that holds List<Product> as a field and delegates methods that were previously used.
3. Change all Type occurrences of List<Product> to ProductList

For 3. I could use the preexisting ChangeType recipe, however, then I needed to make a composite of many Recipes. This is already my first Question. Can I make a composite of many Recipes and test it as well as use it as if it was just a single one?
update: just noticed that recipes implement a chain of responsibility.

How would you go about solving this problem overall?
How could I find all used methods of List to use them in a new JavaTemplate that created the WrapperClass? Ideas welcome.

greetings,
Gregor

[taravirginillo]

Hey Greg! I'm dealing with a similar issue right now. Did you figure out a composite recipe that would work for you? Still trying to figure out a recipe to detect methods of a given primitive. I also was considering using ChangeType along with a composite of other recipes. Did that method succeed for you? Let me know if there's been any updates since you've posted this!

[gregorriegler]

Hi Tara, I am still working on this with a friend of mine. We started way simpler than the use case I described in my first post.
Made some successes, but it's much more complicated than I anticipated. Love to share though. Forum is not the best medium for this I think, its not even finished.

[timtebeek]

Hi @gregorriegler ! Sorry to see you did not get a reaction sooner; I've now hooked up GitHub discussions to our Slack so we get notified about any new discussions.

Interesting use case; curious to see how far you've some since and how we can best support you going further. Welcome to drop by our Slack; the team is quite active there to help you further.