NHibernate mapping index out of range

Question

I have two classes:

 public class CarModel
    {
        public virtual int Id { get; set; }
        public virtual string model_name { get; set; }
    }
         


        

Answer 1

The issue here is in a doubled column mapping:

Both properties (valueType and Reference) are targeting same column. Which is possible but not for Write operations. We have to make one of them readonly using insert="false" and update="false"

So, now we do have access to both properties, mapped to same column, but the INSERT, UPDATE will target that column only once. Because that was the original issue here: ...ndex was out of range. Must be non-negative and less than the size of the collection...

Also check the similar issue: https://stackoverflow.com/a/24248912/1679310