public async Task <IReadOnlyList <Book> > GetBooks(IResolverContext context)
{
_requestCount = 0;
var ids = Enumerable.Range(0, 100).ToImmutableList();
await Task.Delay(1);
var books = await context.BatchDataLoader(
async (IReadOnlyList <int> bookIds, CancellationToken t) => {
Interlocked.Increment(ref _requestCount);
if (_requestCount > 1)
{
throw new Exception("Nope!");
}
var data = bookIds.Select(
x => new Book
{
Title = "C# in depth",
Author = "Jon Skeet",
Id = x
}
);
IReadOnlyDictionary <int, Book> result = data.ToDictionary(x => x.Id);
await Task.Delay(1);
return(result);
}).LoadAsync(ids, context.RequestAborted);
return(books.ToList());
}
private static async Task <int> ResolveInventory(this IResolverContext context)
{
var dataLoader = context.BatchDataLoader <Guid, int>(
"availableById",
context.Service <Cheeze.Inventory.Client.IInventoryClient>().FetchInventory);
return(await dataLoader.LoadAsync(context.Parent <Cheese>().Id, context.RequestAborted));
}
public async Task <Industry> GetIndustry([ScopedService] MyContext dbcontext, int id,
IResolverContext context, CancellationToken token)
{
return(await context.BatchDataLoader <int, Industry>(async (ids, ct) =>
{
var result = await dbcontext.Industries
.Where(x => ids.Contains(x.Id))
.ToListAsync();
return result.ToDictionary(x => x.Id);
})
.LoadAsync(id, token));
}
/// <summary>
/// Loads entities with BatchDataLoader
/// </summary>
/// <param name="context"></param>
/// <param name="dataLoaderKey"></param>
/// <param name="key"></param>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <returns></returns>
protected async Task <TValue> LoadByIdAsync <TKey, TValue>(
IResolverContext context, TKey key)
where TValue : class, IHasId <TKey>
{
var dataLoader = context.BatchDataLoader <TKey, TValue>(typeof(TValue).FullName, async keys =>
{
var db = CreateDataContext();
return(await db.Set <TValue>()
.Where(p => keys.Contains(p.Id))
.ToDictionaryAsync(p => p.Id));
});
return(await dataLoader.LoadAsync(key, CancellationToken.None));
}
public static async Task <IEnumerable <Contract> > GetContracts(IResolverContext context, [Parent] Subscriber sub, [Service] SubscriberAdapter data)
=> (await context.BatchDataLoader <int, IEnumerable <int> >("getContractIds", data.GetContractIds).LoadAsync(((Entity)sub).Id))
.Select(id => new Contract {
Id = id
});
public static async Task <IDictionary <string, string> > GetContactDetails(IResolverContext context, [Parent] Subscriber sub, [Service] SubscriberAdapter data)
=> await context.BatchDataLoader <int, IDictionary <string, string> >("getContactDetails", data.GetContactDetails).LoadAsync(((Entity)sub).Id);
public static async Task <long> GetSubscriberId(IResolverContext context, [Parent] Contract contract, [Service] ContractAdapter data)
=> contract.Id != default
? await context.BatchDataLoader <int, int>("getSubscriberIdsByIds", data.GetSubscriberIdsByIds).LoadAsync(contract.Id)
: await context.BatchDataLoader <long, int>("getSubscriberIdsByNums", data.GetSubscriberIdsByNums).LoadAsync(contract.Number);
public static async Task <long> GetСontractNumber(IResolverContext context, [Parent] Account account, [Service] AccountAdapter data)
=> account.Id != default
? await context.BatchDataLoader <int, long>("getContractNumsByIds", data.GetContractNumsByIds).LoadAsync(account.Id)
: await context.BatchDataLoader <long, long>("getContractNumsByNums", data.GetContractNumsByNums).LoadAsync(account.Number);
public static async Task <decimal> GetBalance(IResolverContext context, [Parent] Account account, [Service] AccountAdapter data)
=> account.Id != default
? await context.BatchDataLoader <int, decimal>("getBalancesByIds", data.GetBalancesByIds).LoadAsync(account.Id)
: await context.BatchDataLoader <long, decimal>("getBalancesByNums", data.GetBalancesByNums).LoadAsync(account.Number);
public static async Task <long> GetAccountNumber(IResolverContext context, [Parent] SubscriberDevice device, [Service] DeviceAdapter data)
=> device.Id != default
? await context.BatchDataLoader <int, long>("getAccountNumbersByIds", data.GetAccountNumbersByIds).LoadAsync(device.Id)
: await context.BatchDataLoader <long, long>("getAccountNumbersByNums", data.GetAccountNumbersByNums).LoadAsync(device.Number);
public static async Task <DateTime> GetCreationDate(IResolverContext context, [Parent] SubscriberDevice device, [Service] DeviceAdapter data)
=> device.Id != default
? await context.BatchDataLoader <int, DateTime>("getDevicesDatesByIds", data.GetDatesByIds).LoadAsync(device.Id)
: await context.BatchDataLoader <long, DateTime>("getDevicesDatesByNums", data.GetDatesByNums).LoadAsync(device.Number);
public static async Task <long> GetNumber(IResolverContext context, [Parent] SubscriberDevice device, [Service] DeviceAdapter data)
=> device.Number = device.Number = device.Number == default
? await context.BatchDataLoader <int, long>("getDevicesNumbers", data.GetNumbers).LoadAsync(device.Id)
: device.Number;
public async Task <Client> GetClient([Service] ApplicationDbContext db, IResolverContext context, int id)
{
var dataLoader = context.BatchDataLoader <int, Client>(nameof(GetClient), async ids => await db.Clients.Where(c => ids.Contains(c.Id)).ToDictionaryAsync(x => x.Id, x => x));
return(await dataLoader.LoadAsync(id, context.RequestAborted));
}
public static async Task <int> GetId(IResolverContext context, [Parent] Contract contract, [Service] ContractAdapter data)
=> contract.Id = contract.Id == default
? await context.BatchDataLoader <long, int>("getContractsIds", data.GetIds).LoadAsync(contract.Id)
: contract.Id;
public static async Task <string> GetPhysicalPersonMiddleName(IResolverContext context, [Parent] Subscriber sub, [Service] SubscriberAdapter data)
=> (await context.BatchDataLoader <int, string>("getFullNames", data.GetFullNames).LoadAsync(((Entity)sub).Id)).Split(' ')[2];
public static async Task <string> GetLegalPersonForm(IResolverContext context, [Parent] Subscriber sub, [Service] SubscriberAdapter data)
=> await context.BatchDataLoader <int, string>("getForms", data.GetForms).LoadAsync(((Entity)sub).Id);
public static async Task <int> GetId(IResolverContext context, [Parent] SubscriberDevice device, [Service] DeviceAdapter data)
=> device.Id = device.Id == default
? await context.BatchDataLoader <long, int>("getContractsIds", data.GetIds).LoadAsync(device.Id)
: device.Id;
public static async Task <long> GetNumber(IResolverContext context, [Parent] Account account, [Service] AccountAdapter data)
=> account.Number = account.Number == default
? await context.BatchDataLoader <int, long>("getAccountsNumbers", data.GetNumbersByIds).LoadAsync(account.Id)
: account.Number;
public async Task <PersistedGrant> GetPersistedGrant([Service] ApplicationDbContext db, IResolverContext context, string key)
{
var dataLoader = context.BatchDataLoader <string, PersistedGrant>(nameof(GetPersistedGrant), async keys => await db.PersistedGrants.Where(c => keys.Contains(c.Key)).ToDictionaryAsync(x => x.Key, x => x));
return(await dataLoader.LoadAsync(key, context.RequestAborted));
}
public static async Task <DateTime> GetCreationDate(IResolverContext context, [Parent] Account account, [Service] AccountAdapter data)
=> account.Id != default
? await context.BatchDataLoader <int, DateTime>("getAccountsDatesByIds", data.GetDatesByIds).LoadAsync(account.Id)
: await context.BatchDataLoader <long, DateTime>("GetAccountsDatesByNums", data.GetDatesByNums).LoadAsync(account.Number);
/*
* public Task<Person> GetPerson(string id, IResolverContext context, [Service]IPersonRepository repository)
* {
* return context.BatchDataLoader<string, Person>("personByIdBatch", keys => repository.GetPersonBatchAsync(keys)).LoadAsync(id);
* }
*/
public Task <userApp> GetPerson(string id, IResolverContext context)
{
return(context.BatchDataLoader <string, userApp>("personByIdBatch", async keys => await _context.UserApp.ToDictionaryAsync(mc => mc.userAppId)).LoadAsync(id));
}
public static async Task <int> GetId(IResolverContext context, [Parent] Account account, [Service] AccountAdapter data)
=> account.Id = account.Id == default
? await context.BatchDataLoader <long, int>("getAccountsIds", data.GetIds).LoadAsync(account.Id)
: account.Id;
public async Task <TableType> Table(OrderType order, IResolverContext context, [Service] ITableService tableService)
{
return(await context.BatchDataLoader <Guid, TableType>("tableById", ids => tableService.GetTablesAsync(ids))
.LoadAsync(order.TableId, default(CancellationToken)));
}
public async Task <DeviceCode> GetDeviceCode([Service] ApplicationDbContext db, IResolverContext context, string userCode)
{
var dataLoader = context.BatchDataLoader <string, DeviceCode>(nameof(GetDeviceCode), async userCodes => await db.DeviceCodes.Where(c => userCodes.Contains(c.UserCode)).ToDictionaryAsync(x => x.UserCode, x => x));
return(await dataLoader.LoadAsync(userCode, context.RequestAborted));
}
public static async Task <long> GetNumber(IResolverContext context, [Parent] Contract contract, [Service] ContractAdapter data)
=> contract.Number = contract.Number = contract.Number == default
? await context.BatchDataLoader <int, long>("getContractsNumbers", data.GetNumbers).LoadAsync(contract.Id)
: contract.Number;
