public bool AddBankUser(BankAppUserEntity bankUser)
{
// Lecture: Depending on the technology, the developer maybe responsible for assigning
// the universally unique identifier (UUID) for each entity record. The easier way to
// do this is to use the date. However, this may not be an option if you are
// expecting multiple records being created at the same exact time, which is a very
// common need in modern systems. Using one of the predefined UUID algorithm would
// be better, specifically the UUID version 2. If you are using a RDBMS, then use the
// built-in capabilities instead of defining your own.
// Assign key
bankUser.EntityId = $"{UserTable}_{DateTime.UtcNow.ToString(FormatDefaults.UserFormat)}";
var bankUsers = GetBankUsers();
if (bankUsers.Contains(bankUser))
{
// Business Rule: Cannot add duplicate
return(false);
}
return(_ds.AddOrUpdate(UserTable, bankUser));
}
