I need to solve a problem which at the first seems simple but make me confused quickly.
Suppose I have a User which holds Box objects. A Box is an abstract concept that is concretely implemented by some concrete classes, e.g. MoneyBox, PointBox, ValueBox, ItemBox, etc.
Moreover, a box object can be composed of multiple dependent Box objects which can be of the same type described above.
This means that a user can hold, for example, a MoneyBox and a PointBox. The MoneyBox can also have a dependent DiscountBox.
A box supports a defined number of behaviors like Activate, Use, Disable, etc.
The algorythm is activated from a request that should be applied to a User. The requests then shall be forwarded to every Box of that user. If a Box has dependents boxes, those shall be notified about the requests as well.
Forwarding a request to a box can be done in parallel for the boxes directly holded by the user but shall be done sequentially, based on an order field, to dependent boxes.
I have read many sources on the internet including patterns like Mediator, Chain of responsibility and Command but I can't get through on putting them all together.
Any help and/or suggestions?
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