hey, I meet the Stackoverflow Exception, and this ...

# koin

[kurt_steiner]

hey, I meet the Stackoverflow Exception, and this is my code

single {
                TaskService(
                    database = get(),
                    taskGroupService = get(),
                    taskProjectService = get(),
                    tagService = get(),
                    subtaskService = get()
                )
            }

            single {
                TaskGroupService(
                    database = get(),
                    taskService = get()
                )
            }

how can I fix it ?

[Nino]

This is a cyclic dependence between TaskService and TaskGroupService.

TaskService needs TaskGroupService, which in turns needs TaskService, which in turn needs TaskGroupService, etc...

Try to extract the code that is needed by both your classes into a 3rd "standalone" class, which can be injected without issue in both TaskService and TaskGroupService

[kurt_steiner]

sorry to be late, actually I have fix it with this code
thank you for explaination

[Nino]

If your TaskGroupService still has the TaskService dependency, the issue (cyclic dependency) is still present, even if you avoided the crash by injecting lazily the TaskGroupService.

[Nino]

I would recommend you read more documentation about the core concepts of injection before you go any further or you will face many more issues and incomprehension later on.

Sadly, the Koin documentation doesn't explain the "why" of injection, only the "how".

[Pedro Francisco de Sousa Neto]

This the dilemma of egg and chicken. To get the chicken you need the egg. To get the egg you need the chicken. 🙃