Esempio n. 1
0
        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);
            }
        }