Support for Java 14+ records

[y2k-shubham]

• It might sound counter-intuitive given that even though Java records are immutable by their very definition, I want to use @Value.Immutable annotation with them. That's because one delightful feature that @Value.Immutable annotation provides for conventional Java interfaces and abstract classes is the builder-methods that enable graceful object construction, especially DTOs within multiple fields including several Optionals
  • I understand that Immutability and builder-pattern are two orthogonal features and technically unrelated to each other
• Presently to use builder-pattern with Java records, we have 3 paths as per this article
  1. Hand-written Builder class nested within Java record class
  2. Lombok (no, please no)
  3. This small RecordBuilder library of which I'm sceptical as to how long would it be supported by community (plus it also offers several customizations around pure / simple builders that i'm not too keen about & don't want those unnecessary loopholes in my project)

So then are there any plans to support @Value.Immutable annotation for Java records and by when?

[elucash]

We're planning to add quite full support for records. Most probably it will be Immutables 3 . But there's the way now, using @Builder.Constructor annotation on a compact constructor. @Builder.Constructor was originally was created to support free-form objects/pojo constructors.
See #1285 for the details, in particular, here's the example (#1285 (comment))

record Uio(
  int x,
  String b,
  boolean z
) {
  @Builder.Constructor Uio {}
}

var b = new UioBuilder()
  .x(4)
  .b("xx")
  .z(true)
  .build();

[bmarwell]

Can't wait to see this in a release!