I know this is not exactly what you asked, but would something like
this work for you?
class Chameleon{ String color = "green" }
trait ColorChanging {
String lastColor
def changeColor = {newcolor ->
lastColor = this.color
this.color = newcolor
}
}
trait MyProps {
void printAllMyProperties(){
this.properties.each{println it}
}
}
def mylizard = new Chameleon().withTraits(ColorChanging, MyProps)
mylizard.changeColor('blue')
mylizard.printAllMyProperties()
mylizard.properties.each{println it}
Cheers,
Dinko
On 29 February 2016 at 03:23, Gerald Wiltse <[email protected]> wrote:
> Is there a way for the Chameleon class to ever see that it has a "lastColor"
> property?
>
> class Chameleon{
> String color = "green"
>
> void printAllMyProperties(){
> this.properties.each{println it}
> }
>
> }
>
> trait ColorChanging {
> String lastColor
> def changeColor = {newcolor ->
> lastColor = this.color
> this.color = newcolor
> }
> }
>
> def mylizard = new Chameleon().withTraits(ColorChanging)
>
> mylizard.changeColor(blue)
>
> mylizard.printAllMyProperties()
> mylizard.properties.each{println it}
>
> The outputs of the two above lines don't match. lastColor isn't available
> from inside the class.
>
> This seems like it should be possible, but I tried several things including
> the declaredFields property and could not get the desired effect.
>
> In this script, I'm looking for a way for my instance to reference all the
> properties it's received from the trait. I guess it's same situation with
> inheritance, and properties added by propertymissing.
>
>
>
>
> Gerald R. Wiltse
> [email protected]
>
