private static int Save(PollingEntityDbContext context, int retries, Action <DbEntityEntry> resolver)
{
DbUpdateConcurrencyException exception;
bool saveFailed;
do
{
saveFailed = false;
try
{
return(context.SaveChanges());
}
catch (DbUpdateConcurrencyException ex)
{
exception = ex;
saveFailed = true;
if (retries-- < 1)
{
throw exception;
}
var entries = ex.Entries.ToArray();
foreach (var entry in entries)
{
resolver(entry);
}
}
} while (saveFailed);
throw exception;
}
public static int SaveChangesDatabaseWins(this PollingEntityDbContext context, int retries = 1)
{
return(Save(context, retries, (e) => e.Reload()));
}
public static int SaveChangesClientWins(this PollingEntityDbContext context, int retries = 1)
{
return(Save(context, retries, (e) => e.OriginalValues.SetValues(e.GetDatabaseValues())));
}
