public bool Add(Award entity, out string errorMessage)
{
if (entity == null)
{
throw new ArgumentNullException();
}
string title = entity.Title;
if (string.IsNullOrEmpty(title) || !char.IsLetterOrDigit(title[0]))
{
errorMessage = "Award title is empty or do not starts with letter or digit.";
return(false);
}
if (title.Length > 200)
{
errorMessage = "Lenth of award title is more than 200.";
return(false);
}
var id = Guid.NewGuid();
try
{
return(dao.Add(id, entity, out errorMessage));
}
catch (Exception ex)
{
WriteToLog(ex);
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
}
public bool Add(User entity, out string errorMessage)
{
if (entity == null)
{
throw new ArgumentNullException();
}
string name = entity.Name;
if (string.IsNullOrEmpty(name) || !char.IsLetterOrDigit(name[0]))
{
errorMessage = "User name is empty or do not starts with letter or digit.";
return(false);
}
if (name.Length > 100)
{
errorMessage = "Lenth of user name is more than 100.";
return(false);
}
if (entity.DateOfBirth > DateTime.Now || entity.DateOfBirth.Date < DateTime.Now.AddYears(-100))
{
errorMessage = "User's date of birth out of range (age had to be from 0 to 100).";
return(false);
}
var id = Guid.NewGuid();
try
{
return(dao.Add(id, entity, out errorMessage));
}
catch (Exception ex)
{
WriteToLog(ex);
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
}
public bool Add(LinkUserAward entity, out string errorMessage)
{
if (entity == null)
{
throw new ArgumentNullException();
}
Guid id = entity.UserId;
if (id == null || id == Guid.Empty)
{
errorMessage = "User ID is null null empty.";
return(false);
}
IEnumerable <KeyValuePair <Guid, User> > leftResult;
try
{
if (!leftDao.GetById(id, out leftResult, out errorMessage))
{
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
}
catch (Exception ex)
{
WriteToLog(ex);
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
if (leftResult.Count() == 0)
{
errorMessage = "Тhere is no User with this ID.";
return(false);
}
id = entity.AwardId;
if (id == null || id == Guid.Empty)
{
errorMessage = "Award ID is null null empty.";
return(false);
}
IEnumerable <KeyValuePair <Guid, Award> > rightResult;
try
{
if (!rightDao.GetById(id, out rightResult, out errorMessage))
{
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
}
catch (Exception ex)
{
WriteToLog(ex);
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
if (rightResult.Count() == 0)
{
errorMessage = "Тhere is no Award with this ID.";
return(false);
}
id = Guid.NewGuid();
try
{
return(linkDao.Add(id, entity, out errorMessage));
}
catch (Exception ex)
{
WriteToLog(ex);
errorMessage = "Sorry. Error in data access layer. Сontact the developer.";
return(false);
}
}