OData is now supported in .NET Core and 7.2.0 was released. But can it be used with MongoDB? I have searched, but I could not find anything that says one way or the other.
EDIT:
I've found a nuget package https://www.nuget.org/packages/microsoft.aspnetcore.odata and in ConfigureServices I've added this:
And this seems to work for me:
public void ConfigureServices(IServiceCollection services)
{
...
services.AddOData();
services.AddSingleton<IODataModelManger, ODataModelManager>(DefineEdmModel);
...
}
private ODataModelManager DefineEdmModel(IServiceProvider services)
{
var modelManager = new ODataModelManager();
var builder = new ODataConventionModelBuilder();
builder.EntitySet<TestDTO>(nameof(TestDTO));
builder.EntityType<TestDTO>().HasKey(ai => ai.Id); // the call to HasKey is mandatory
modelManager.AddModel(nameof(Something), builder.GetEdmModel());
return modelManager;
}
Controller
[HttpGet("all")]
public async Task<IQueryable<TestDTO>> Get()
{
// plug your entities source (database or whatever)
var test = await TestService.GetTest();
var modelManager = (IODataModelManger)HttpContext.RequestServices.GetService(typeof(IODataModelManger));
var model = modelManager.GetModel(nameof(Something));
var queryContext = new ODataQueryContext(model, typeof(TestDTO), null);
var queryOptions = new ODataQueryOptions(queryContext, HttpContext.Request, Provider);
return queryOptions
.ApplyTo(test, new ODataQuerySettings
{
HandleNullPropagation = HandleNullPropagationOption.True
}, null)
.Cast<TestDTO>();
}
Service
public async Task<IQueryable<TestDTO>> GetTest()
{
return await GenericRepository.TestAll();
}
Repositories
public async Task<IQueryable<TEntity>> TestAll()
{
var res = new GetManyResult<TEntity>();
try
{
DateTime startTime = DateTime.Now;
var collection = GetCollection<TEntity>().AsQueryable();
var entities = collection.ToArray<TEntity>().AsQueryable();
return entities
}
But is this the best way to do it?
I mean, shouldn't the collection contain only the elements that meet the filters, beeing more optimised?
If yes, how do I achieve this?