The builder pattern
As noted elsewhere, Performables are stateful objects which are not resolved from dependency injection. The state/dependencies which should be provided to a performable object should be parameter values. For example, a performable which adds a product to a shopping cart might need two pieces of state:
- Which product to add
- The quantity
Recall that any external dependencies should come from the performing actor's Abilities.
It is possible to create instances of performable types with just the new keyword.
The state could be provided using constructor-injected parameter values or via property setters.
Whilst the techniques above will work, neither are as attractive or easy to read and comprehend as the builder pattern.