Support for MapStruct implementation

[wonsuc]

MapStruct supports several DI solutions.

However MapStruct only adds a constructor if there is at least one dependency used. If there are no dependencies then no constructor is created and thus it can't be injected.

With this limitation, it's hard to use Dagger for MapStruct's mapper class.

There is a PR for Dagger support but still in progress.

I wonder if Dagger deverlopers can support for complete implementation with MapStruct framework.

[bcorso]

@wonsuc unfortunately, fixing the bug in MapStruct is not something that our team will be able to devote resources to, but it sounds like they are accepting PRs from community members , so you should feel free to give it a shot yourself.

In the meantime, you should be able use Dagger's @Provides methods to provide the binding to workaround the bug in MapStruct, as mentioned in mapstruct/mapstruct#1617 (comment).