public static async Task <int> GetCustomerEntities()
{
return(await CustomerOperations.WarmupTask());
}
/// <summary>
/// Get duplicate customers by company name, contact name, contact title
/// </summary>
/// <returns></returns>
public static async Task <List <CustomerEntity> > GetDuplicates()
{
#if DEBUG
var originalColor = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("SQL");
Console.ForegroundColor = originalColor;
#endif
List <CustomerEntity> customerList = await CustomerOperations.AllCustomersAsync();
var duplicates = from customerEntity in customerList
select
new
{
Identifier = customerEntity.CustomerIdentifier,
CompanyName = customerEntity.CompanyName,
ContactId = customerEntity.ContactIdentifier,
ContactName = customerEntity.ContactName,
ContactTitle = customerEntity.ContactTitle,
Address = customerEntity.Street,
City = customerEntity.City,
PostalCode = customerEntity.PostalCode,
CountryId = customerEntity.CountryIdentifier
}
into customerItems
group customerItems by
new
{
CompanyName = customerItems.CompanyName,
ContactName = customerItems.ContactName,
ContactTitle = customerItems.ContactTitle
}
into grouped
where grouped.Count() > 1
select grouped.Select(g =>
new DuplicateItem
(
g.Identifier,
g.CompanyName,
g.ContactId,
g.ContactName,
g.ContactTitle,
g.Address,
g.City,
g.PostalCode,
g.CountryId
)
);
return((from item in duplicates
from duplicate in item
select new CustomerEntity()
{
CustomerIdentifier = duplicate.Identifier,
CompanyName = duplicate.CompanyName,
ContactIdentifier = duplicate.ContactId,
ContactFullName = duplicate.ContactName,
ContactTitle = duplicate.ContactTitle,
Street = duplicate.Address,
City = duplicate.City,
PostalCode = duplicate.PostalCode,
CountryIdentifier = duplicate.CountryIdentifier
}).ToList());
}
