groovyist example

Groovyist.groovy

class Groovyist {
    String username
    String password
    String email
    Long   favoritePrime

    static constraints = {
        username blank: false, unique: true
        password size: 5..15, blank: false
        email email: true, blank: false
        favoritePrime validator: { BigInteger(it).isProbablePrime(99) }
}