private void Merge(DataModel.Introduction dbItem, IEnumerable <ExternalUrl> newExternalUrls)
{
if (newExternalUrls == null)
{
newExternalUrls = new List <ExternalUrl>();
}
var toRemove = dbItem.ExternalUrls.Where(eu => !newExternalUrls.Any(x => eu.ExternalUrlId == x.Id)).ToList();
foreach (var item in toRemove)
{
dbItem.ExternalUrls.Remove(item);
_context.ExternalUrls.Remove(item.ExternalUrl);
_context.IntroductionExternalUrls.Remove(item);
}
var toAdd = newExternalUrls.Where(x => x.Id == null);
foreach (var item in toAdd)
{
dbItem.ExternalUrls.Add(AbstractionsConverter.ToIntroductionExternalUrl(item));
}
var toUpdate = newExternalUrls.Where(x => x.Id.HasValue);
foreach (var item in toUpdate)
{
var upd = dbItem.ExternalUrls.FirstOrDefault(x => x.ExternalUrlId == item.Id.Value);
upd.ExternalUrl.DisplayName = item.DisplayName;
upd.ExternalUrl.Url = item.Url;
upd.ExternalUrl.Version++;
}
}
private static void CheckBeforeUpdate(DataModel.Introduction dbItem, Introduction introduction)
{
if (dbItem.Version != introduction.Version)
{
throw new InconsistencyException
(
string.Format(Resources.TextMessages.ItemWasAlreadyChanged, introduction.GetType().Name)
);
}
foreach (var item in dbItem.ExternalUrls)
{
var updated = introduction.ExternalUrls?.FirstOrDefault(x => x.Id == item.ExternalUrlId);
if (updated == null)
{
continue;
}
if (item.ExternalUrl.Version != updated.Version)
{
throw new InconsistencyException
(
string.Format(Resources.TextMessages.ItemWasAlreadyChanged, updated.GetType().Name)
);
}
}
}
private void Merge(DataModel.Introduction dbItem, Introduction newItem)
{
dbItem.Title = newItem.Title;
dbItem.Content = newItem.Content;
dbItem.PosterDescription = newItem.PosterDescription;
dbItem.PosterUrl = newItem.PosterUrl;
dbItem.Version++;
Merge(dbItem, newItem.ExternalUrls);
}