Turn object into singleton in Play

[Malte]

Hi,

First of all: I love scaldi. Been using it for years now and super happy with it. Thank you for all the work that has been put into it. 

I currently have an object that is quite heavy to instantiate, but it requires access to the current Play app + configuration. I used to just access Play.application etc, but these are deprecated. If I turn it into a class, it will get instantiated in every test that I use it. I would like to not do that. Is there a way to turn an object into a singleton such that it only gets instantiated once for all tests?

object BigObject {

 val app = Play.app

...

}

becomes

@Singleton

class BigObject(implicit inj: Injector) extends Injectable {

val app = inject[Application]

}

?

Yours

Malte

[Alexandre Bedrytski]

Hi Malte,

if you are using bind to syntax in your module for the BigObject, it is automatically a singleton. (if you don't want it to be a singleton, use bind toProvider instead so it would be initiated on each inject)

As you say, the BigObject class uses configuration, you may pass it as a parameter for a constructor. 

bind [BigObject] to new BigObject(inject[Application])

Alex.

[Oleg Ilyenko]

Thanks for kind words, Malte! I agree with Alexandre's suggestion. I just would like to add, that since `BigObject` uses a play `Application` it also will have the same life-cycle. Every time you create a new application in the test, you also need to create an instance of `BigObject` for it.

[Malte Bücken]

Awesome, thank you guys for your help!

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