HowTo: Custom Field in Lift-Record-Squeryl

Question

I am trying to create an EnumListField in Lift / Record / Squeryl, similar to MappedEnumList in LiftMapper. Storage type must be long / BIGINT. I understand that if I define:

def classOfPersistentField = classOf[Long] 

Squeryl will then know that it must create a BIGINT column. And I know that it uses setFromAny () to set the value passing in Long. The only thing I do not get is:

How will he read the value of the field? If he uses a valueBox, he will get Seq [Enum # Value], and he will not know how to turn it into Long.

How do I pass Squeryl to convert my Seq [Enum # Value] to Long, or define a “getter” that returns Long and does not conflict with a “normal” getter (s)?