title: JPA: ignore field on save, but fetch on select
body: <p>I am using Hibernate as my JPA provider, and I want one of the fields in an entity to be ignored when calling <code>save()</code>. However, I do have a matching column in the corresponding database table and I want my entity field to be populated with the database value when I fetch the entity. So, I want the field to be ignored when saving the entity, but not when fetching it.</p>
  
  <p>If I use <code>@Transient</code>, the field is completely ignored, which is not what I want. Is there any way to do this?</p>