Can I have just getters and not setter?

Question

I am quite new to groovy, and I have found out that by making a field public, groovy provides getters and setters by default. Is there a way to have just the getters but not the setters by default? The reason behind this is that I have a Builder and I don't want to provide access to the object fields for modification.

Answer 1

You can make the fields final and add the Canonical transform to get the c'tor created automatically for you. Or even easier use the Immutable transform:

@groovy.transform.Immutable
class A {
    String x
}

def a = new A("x")
assert a.x == "x"
// a.x = "will fail"
// a.setX("will fail")

In any case, you should take a look into the builder transforms, what they have to offer for your use case.