You're still leaning too much in types. Go is a very lightweight type system. The setter and base type basically scream for "I want to use my Java in Go". I'm n

You're still leaning too much in types. Go is a very lightweight type system. The setter and base type basically scream for "I want to use my Java in Go". I'm not even talking about using a factory. Here's I would do it: http://play.golang.org/p/EmxCRkDNLC http://play.golang.org/p/EmxCRkDNLC