public async Task <CustomersListViewModel> Handle(GetCustomersListQuery request, CancellationToken cancellationToken)
{
return(new CustomersListViewModel
{
Customers = await _context.Set <Customer>().ProjectTo <CustomerLookupModel>(_mapper.ConfigurationProvider).ToListAsync(cancellationToken)
});
}
public async Task <CustomerDetailModel> Handle(GetCustomerDetailQuery request, CancellationToken cancellationToken)
{
var entity = await _context.Set <Customer>()
.FindAsync(request.Id);
if (entity == null)
{
throw new NotFoundException(nameof(Customer), request.Id);
}
return(CustomerDetailModel.Create(entity));
}
public async Task <Unit> Handle(DeleteCustomerCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Set <Customer>()
.FindAsync(request.Id);
if (entity == null)
{
throw new NotFoundException(nameof(Customer), request.Id);
}
var hasOrders = _context.Set <Order>().Any(o => o.CustomerId == entity.CustomerId);
if (hasOrders)
{
// TODO: Add functional test for this behaviour.
throw new DeleteFailureException(nameof(Customer), request.Id, "There are existing orders associated with this customer.");
}
_context.Set <Customer>().Remove(entity);
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <CustomersListViewModel> Handle(FindCustomersByName request, CancellationToken cancellationToken)
{
return(new CustomersListViewModel
{
Customers = await _context.Set <Customer>()
.Where(c => c.CompanyName.Contains(request.Name))
//.Where(c => c.CompanyName.StartsWith(request.Name))
//.Where(c => c.CompanyName.Equals(request.Name))
.Select(c => new CustomerLookupModel()
{
Name = c.CompanyName,
Id = c.CustomerId
})
.ToListAsync(cancellationToken)
});
}
public async Task <IEnumerable <CustomersMostPurchasedViewModel> > Handle(GetCustomersMostPurchasedProductsQuery request, CancellationToken cancellationToken)
{
return(await _context.Set <CustomersMostPurchasedProducts>()
.OrderByDescending(c => c.QuantityPurchased)
.Skip(request.PageIndex * request.PageSize)
.Take(request.PageSize)
.Select(r => new CustomersMostPurchasedViewModel
{
CompanyName = r.CompanyName,
CustomerId = r.CustomerID,
ProductId = r.ProductID,
ProductName = r.ProductName,
QuantityPurchased = r.QuantityPurchased
})
.ToListAsync(cancellationToken));
}
public async Task <IEnumerable <CustomerOrdersModel> > Handle(GetCustomerOrders request, CancellationToken cancellationToken)
{
var efQuery = _context.Set <Customer>().Where(c => true);
efQuery = ApplyFilters(efQuery, request);
efQuery = ApplyPaging(efQuery, request);
return(await SimpleSelect(efQuery));
// return await ToListSelect(efQuery);
// return await SelectAnon(efQuery);
// return await ReusableProjection(efQuery);
// return await ExtensionMethod(efQuery);
// return await AutoMapper(efQuery);
// Note: Show Linqkit predicate builder
// http://www.albahari.com/nutshell/predicatebuilder.aspx
}
public async Task <Unit> Handle(CreateCustomerCommand request, CancellationToken cancellationToken)
{
var entity = new Customer
{
CustomerId = request.Id,
Address = request.Address,
City = request.City,
CompanyName = request.CompanyName,
ContactName = request.ContactName,
ContactTitle = request.ContactTitle,
Country = request.Country,
Fax = request.Fax,
Phone = request.Phone,
PostalCode = request.PostalCode
};
_context.Set <Customer>().Add(entity);
await _context.SaveChangesAsync(cancellationToken);
//await _mediator.Publish(new CustomerCreated { CustomerId = entity.CustomerId }, cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(UpdateCustomerCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Set <Customer>()
.SingleOrDefaultAsync(c => c.CustomerId == request.Id, cancellationToken);
if (entity == null)
{
throw new NotFoundException(nameof(Customer), request.Id);
}
entity.Address = request.Address;
entity.City = request.City;
entity.CompanyName = request.CompanyName;
entity.ContactName = request.ContactName;
entity.ContactTitle = request.ContactTitle;
entity.Country = request.Country;
entity.Fax = request.Fax;
entity.Phone = request.Phone;
entity.PostalCode = request.PostalCode;
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
