Clash Royale CLAN TAG#URR8PPP

Pre-populate Room database fetching data from different API endpoints using LiveData

I have to display a list of dogs (their names) and also for each dog to display their owner's name.

But The problem is I have to fetch data from two different endpoints:

Endpoint 1: Fetch a list of person

JSON Response :

[
"id" : 1,
"name": "Mike"
,

"id" : 1,
"name": "Joan"
]


Endpoint 2: Fetch list of dog

Json Response :

[
"id" : 1,
"userId" : 1
"name": "Doggity"
,

"id" : 2,
"userId" : 1
"name": "Doggo"
,

"id" : 3,
"userId" : 2
"name": "Doggy"
]


The moment I need to display the list of dogs I need to already had the list of their owner. For that reason, I have to pre-populate the room database with those data (fetching from the server).

But I don't know how to that because the LiveData only fetches data from one endpoint. I mean, If I need to list dogs (Endpoint 2), I do:

mDogListViewModel.getDogs()
.observe(this, this::response);


And this is what the repository do:

public LiveData<Response<List<Dog>>> getListDogs()
return new NetworkBoundResource<List<Dog>,List<Dog>>(mAppExecutors)

@Override
protected void saveCallResult(@NonNull List<Dog> item)
mDogDao.insertDogs(item);


@Override
protected boolean shouldFetch(@Nullable List<Dog> data)

@NonNull
@Override
protected LiveData<List<Dog>> loadFromDb()
return mDogDao.findAll();


@NonNull
@Override
protected LiveData<ApiResponse<List<Dog>>> createCall()
return mService.getDogs();

.asLiveData();



But I need to get the owner's name. So I need to fetch Endpoint 1 data BEFORE fetching Endpoint 2 data.

What do I need?

Pre-populate data fetching and saving into my room Database a table with users and a table with dogs so by the time I need to list dos I've already had their owners.

What is the best practice to pre-populate my Room database? Do I need a LiveData to prepopulate my Room Database?

Thanks.

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