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eQuantic.Core.Persistence.Relational 1.9.3

eQuantic.Core.Api Library

The eQuantic Core API provides all the implementation needed to publish standard APIs.

To install eQuantic.Core.Api, run the following command in the Package Manager Console

Install-Package eQuantic.Core.Api

Example of implementation

The data entities

[Table("orders")]
public class OrderData : EntityDataBase
{
 [Key]
 public string Id { get; set; } = string.Empty;
 public DateTime Date { get; set; }
 
 public virtual ICollection<OrderItemData> Items { get; set; } = new HashSet<OrderItemData>();
}

[Table("orderItems")]
public class OrderItemData : EntityDataBase, IWithReferenceId<OrderItemData, int>
{
 [Key]
 public int Id { get; set; }
 public int OrderId { get; set; }
 
 [ForeignKey(nameof(OrderId))]
 public virtual OrderData? Order { get; set; }
 
 [Required]
 [MaxLength(200)]
 public string Name { get; set; } = string.Empty;
}

The models

public class Order
{
 public string Id { get; set; } = string.Empty;
 public DateTime Date { get; set; }
}

public class OrderItem
{
 public int Id { get; set; }
 public int OrderId { get; set; }
 public string Name { get; set; } = string.Empty;
}

The request models

public class OrderRequest
{
 public DateTime? Date { get; set; }
}

public class OrderItemRequest
{
 public string? Name { get; set; }
}

The mappers

public class OrderMapper : IMapper<OrderData, Order>, IMapper<OrderRequest, OrderData>
{
 public Order? Map(OrderData? source)
 {
 return Map(source, new Order());
 }

 public Order? Map(OrderData? source, Order? destination)
 {
 if (source == null)
 {
 return null;
 }

 if (destination == null)
 {
 return Map(source);
 }

 destination.Id = source.Id;
 destination.Date = source.Date;

 return destination;
 }

 public OrderData? Map(OrderRequest? source)
 {
 return Map(source, new OrderData());
 }

 public OrderData? Map(OrderRequest? source, OrderData? destination)
 {
 if (source == null)
 {
 return null;
 }

 if (destination == null)
 {
 return Map(source);
 }
 
 destination.Date = source.Date ?? DateTime.UtcNow;

 return destination;
 }
}

The services

public interface IOrderService : IApplicationService
{
 
}

[MapCrudEndpoints]
public class OrderService : IOrderService
{
 private readonly IMapperFactory _mapperFactory;
 private readonly ILogger<ExampleService> _logger;
 private readonly IAsyncQueryableRepository<IQueryableUnitOfWork, OrderData, int> _repository;
 
 public OrderService(
 IApplicationContext<int> applicationContext,
 IQueryableUnitOfWork unitOfWork, 
 IMapperFactory mapperFactory, 
 ILogger<OrderService> logger)
 {
 _mapperFactory = mapperFactory;
 _logger = logger;
 _repository = unitOfWork.GetAsyncQueryableRepository<IQueryableUnitOfWork, OrderData, int>();
 }
 
 public async Task<Order?> GetByIdAsync(int orderId, CancellationToken cancellationToken = default)
 {
 var item = await _repository.GetAsync(orderId, cancellationToken: cancellationToken);

 if (item == null)
 {
 var ex = new EntityNotFoundException<int>(orderId);
 _logger.LogError(ex, "{ServiceName} - GetById: Entity of {EntityName} not found", GetType().Name,
 nameof(OrderData));
 throw ex;
 }

 var mapper = _mapperFactory.GetMapper<OrderData, Order>()!;
 var result = mapper.Map(item);
 
 return result;
 }
}

The Program.cs

var builder = WebApplication.CreateBuilder(args);
var assembly = typeof(Program).Assembly;

builder.Services.AddDbContext<ExampleDbContext>(opt =>
 opt.UseInMemoryDatabase("ExampleDb"));
 
builder.Services.AddQueryableRepositories<ExampleUnitOfWork>(opt =>
{
 opt.FromAssembly(assembly)
 .AddLifetime(ServiceLifetime.Scoped);
});

builder.Services
 .AddMappers(opt => opt.FromAssembly(assembly))
 .AddTransient<IExampleService, ExampleService>()
 .AddControllers()
 .AddJsonOptions(options =>
 {
 options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter());
 options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
 })
 .AddFilterModelBinder()
 .AddSortModelBinder();

builder.Services
 .AddEndpointsApiExplorer()
 .AddApiDocumentation(opt => opt.WithTitle("Example API"));

var app = builder.Build();

if (app.Environment.IsDevelopment())
{
 app.UseApiDocumentation();
}

app.UseHttpsRedirection();
app.UseRouting();
app.MapControllers();
app.MapGet("orders/{id}", GetById);

app.Run();
return;

async Task<Results<Ok<Order>, NotFound>> GetById(
 [FromRoute] int id, 
 [FromServices] IOrderService service, 
 CancellationToken cancellationToken)
{
 var item = await service.GetByIdAsync(id, cancellationToken);
 if (item == null)
 return TypedResults.NotFound();

 return TypedResults.Ok(item);
}