ProjectToTypeAsync?

[ftrMorri]

Is Mapster.Async available only for Adapt(), and not for projections?

What I would like is something like this

public async Task<List<SomeDto>> GetProjectionAsAsync(SomeRequest request)
{
    var data = _db.SomeData.AsQueryable();

    // Database operation should be async
    return await data.ProjectToTypeAsync<List<SomeDto>>();
}

I'm not sure if I understand the inner workings correctly, but wouldn't this still execute the database call + projection synchronously, and just the ToList() operation asynchronously?

return await data.ProjectToType<List<SomeDto>>().ToListAsync();

[andrerav]

Mapster already has some underlying issues that can cause problems when using ProjectToType() in certain situations that involve async code. These issues will need to be resolved first. It is advisable to materialize queries with ToList() first before calling ProjectToType().

[wsloth]

@andrerav I know this is a relatively old and already closed issue, but what are you specifically referring to when it comes to async issues in relation to Mapster? I noticed I'm still using ProjectToType in an async context in many places, but was unaware of it causing any issues.