custom apply in table definition

[Edgars]

Hi,

is it possible to create custom apply method to duplicate column?

Instead of:

def * = (id.?, col1, col2, col3) <> (Caseclass.tupled, Caseclass.unapply)

Something like:

def * = (id.?, col1, col2, col3) <> (Caseclass.apply(id,col2,col2,col3).tupled, Caseclass.unapply)

but when I try to define such custom mapping, I get:

type mismatch;
 found   : slick.lifted.Rep[String]
 required: String