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License: Apache License 2.0
Groovy AST transformations, such as @ValueObject and @NonNull, which makes constructing an instance more bullet-proof.
License: Apache License 2.0
Have the default Map constructor also check for null
values.
@tvinke.bulletproof.transform.NonNull
class Person {
String name
}
new Person() // should also throws IllegalArgumentException: "Name can not be null"
Just read your post on Java Code Geeks.
In my own code, I designed an immutable class not using the @Immutable
annotation because I didn't think it allowed one to add setters to an immutable object:
public class Person {
String name;
int age;
// setter
Person setName(String newName) {
new Person(newName, age)
}
Would you be interested in adding these "immutable setters" (not sure what else to call them) or some Groovy counterpart to @ValueObject
? Or perhaps adding another annotation that combines ValueObject
with this idea? I would roll my own annotation, but I haven't yet learned how to do that myself.
I got a comment from @daviddawson on the Groovy Slack channel that
purely from an from an API usage point of view,
@Value
seems like a generic term, I wouldn't know what it meant if I came across that in code.
May be @Value
should be renamed to @ValueObject
, inspite of being inspired by Lombok similarly-named annotation, to clearly indicate it's role.
For the class
@Immutable
@NonNull
class Person {
String name
int age /* primitive */
}
no null
check need to be performed for age
since it's a primitive.
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