title: Stopping Hibernate from trying to get a calculated field from the database
body: <p>I have a property of a business object which is calculated.  The calculation involves some of the logged in user's details, and so can't be represented as a simple SQL query.</p>
  
  <p>I'm having trouble representing the field in the Hibernate mapping XML file, because Hibernate continues to try and retrieve the field from the database, although there is no column by that name.</p>