Does it every make sense for me to need two Dao fu...

# room

[v79]

Does it every make sense for me to need two Dao functions which return the same data, except one is LiveData and the other is not? Because I think I need that.

[v79]

Specifically, when I call the init { ] block in my ViewModel, I need to fetch a fixed value from the database. Currently, the database returns a LiveData object, as I need it like that elsewhere. So I think I'm going to end up in the state where my DAO and repo has the following almost-duplicate functions:

@Query("SELECT * FROM ChargeEvent WHERE id = :id")
    fun getChargeEventWithId(id: Long): LiveData<ChargeEvent?>

    @Query("SELECT * FROM ChargeEvent WHERE id = :id")
    fun getExistingChargeEventWithId(id: Long): ChargeEvent?

Which just looks like a code smell to me. Or rather, a lack-of-understanding smell.

[Michael Marshall]

Can you just get the first element in the LiveData instead?

[Brandon Howard]

I use two functions in my app for this situation - it works fine for me

[rattleshirt]

You could also only have a function which returns a Flow and call viewModelScope.launch { flow.firstOrNull() } from init if you only need it once. Otherwise you could always extract the string from the query as const and reuse it in both

[rattleshirt]

Both dao functions have their use cases. I see similar approaches with coroutines where you have 2 identical queries: suspend fun vs Flow