public static void Execute()
{
Database.SetInitializer(new DropCreateDatabaseAlways<DemoContext>());
using (var demoContext = new DemoContext())
demoContext.Database.Initialize(true);
Console.WriteLine("Creating an {0}", typeof(IData).Name);
var data = new Data.Operations.Data(new DataQueryCache(new MemoryCacheDefaultCacheStore()));
Console.WriteLine("Creating an {0}", typeof(IUserAlertService).Name);
var userAlertService = new UserAlertService();
Console.WriteLine("Creating a {0}", typeof(DbContextScenarios).FullName);
using (var scenarios = new DbContextScenarios(data, userAlertService))
{
Console.WriteLine("Executing various scenarios by using different service types to demonstrate the different usage patterns");
var users = scenarios.ExecuteWithTodoItemsService1(x => x.GetAllUsersAsync());
Console.WriteLine("Found {0} users", users.Length);
var todoItems = scenarios.ExecuteWithTodoItemsService2(x => x.GetAllTodoItemsAsync(users[0].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
todoItems = scenarios.ExecuteWithTodoItemsService3(x => x.GetTodoItemsDueThisWeekAsync(users[1].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
todoItems = scenarios.ExecuteWithTodoItemsService1(x => x.GetTodoItemsDueThisWeekAsync(users[0].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
todoItems = scenarios.ExecuteWithTodoItemsService2(x => x.GetTodoItemsDueThisMonthAsync(users[1].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
// Two calls to demonstrate caching
todoItems = scenarios.ExecuteWithTodoItemsService3(x => x.GetTodoItemsCompletedLastWeekAsync(users[0].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
todoItems = scenarios.ExecuteWithTodoItemsService1(x => x.GetTodoItemsCompletedLastWeekAsync(users[0].Id));
Console.WriteLine("Found {0} todo items", todoItems.Length);
// Two calls to demonstrate caching with transformation
todoItems = scenarios.ExecuteWithTodoItemsService2(x => x.GetUpcomingTodoItemsAsync(users[1].Id, Priority.Normal));
Console.WriteLine("Found {0} todo items", todoItems.Length);
todoItems = scenarios.ExecuteWithTodoItemsService3(x => x.GetUpcomingTodoItemsAsync(users[1].Id, Priority.Urgent));
Console.WriteLine("Found {0} todo items", todoItems.Length);
var alertsSent = scenarios.ExecuteWithTodoItemsService1(x => x.SendAlertsForTodoItemsDueTomorrowAsync(users[1].Id));
Console.WriteLine("Sent {0} alerts", alertsSent);
var success = scenarios.ExecuteWithTodoItemsService2(x => x.CompleteTodoItemAsync(todoItems[0].Id));
Console.WriteLine("TodoItem {0} {1} completed", todoItems[0].Id, success ? "was" : "wasn't");
}
}
public TodoItemsService1(DemoContext demoContext, IData data, IUserAlertService userAlertService)
{
_demoContext = demoContext;
_data = data;
_userAlertService = userAlertService;
}
public TodoItemsService2(DemoContext demoContext)
{
_demoContext = demoContext;
}
