[GROOVY-7672] TupleConstructor should have only SOURCE retention policy

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.5
• Fix Version/s: 2.5.0-alpha-1
• Component/s: xforms
• Assignee: Paul King
• Reporter: Paul King
• Created: 12/Nov/15 04:14
• Updated: 02/May/17 02:03
• Resolved: 14/Nov/15 07:26

Description

We originally gave TupleConstructor RUNTIME retention policy since it might provide a small amount of introspection information for future tools. But so far, as far as I know, it hasn't been used. Given that it makes certain usages impossible, I propose to put back to SOURCE retention policy. This will allow code such as shown below to be possible:

import groovy.transform.*
import java.awt.Color

class Named {
    String name
}

@ToString(includeSuperProperties=true, ignoreNulls=true, includeNames=true, includeFields=true)
@TupleConstructor(force=true, defaults=false)
@TupleConstructor(force=true, defaults=false, includeFields=true)
@TupleConstructor(force=true, defaults=false, includeSuperProperties=true)
class Cat extends Named {
    int age
    private Color color
}

assert new Cat("Felix", 3).toString() == 'Cat(age:3, name:Felix)'
assert new Cat(3, Color.BLACK).toString() == 'Cat(age:3, color:java.awt.Color[r=0,g=0,b=0])'
assert new Cat(3).toString() == 'Cat(age:3)'