Valhalla breaks minimal-j framework

[Bruno Eberhard]

The Keys.of(Class) method goes recursively through all the fields and 
sets unique values to the fields. The values are stored in a Map in the 
Keys class and identify the fields / properties:

private static final Map<Object, Property> properties = new 
IdentityHashMap<>();

Note that if the Address class has its own $ constant then the values 
there would be different. So Address.$.zip has a different identity than 
Person.$.address.zip.

These are all just tricks to emulate the missing construct 
"Person::name" or "Person::address::zip" . I would gladly do it in a 
more legal way. Also it gets really messy with enums. And yes I cannot 
use int with this. Also not boolean which is the bigger issue. Still 
it's really nice to use the $ constant when implementing applications.


Am 01.12.2025 um 20:04 schrieb Ethan McCue:
> Can you elaborate more on how form.line($.address.city); uses the 
> identity of city?
> 
> How does Backend.find(Person.class, By.field($.address.zip, 
> 8000)); figure out that $.address.zip refers to the corresponding field 
> in Address?
> 
>      >
>      >  public class Person {
>      >       public static final Person $ = Keys.of(Person.class);
>      >
>      >       @NotEmpty
>      >       public Integer number;
>      >
>      >       @Size(100)
>      >       @Searched
>      >       @NotEmpty
>      >       public String name;
>      >
>      >       public final Address address = new Address();
>      > }
>      >
>      > With the $ constant there is a reference to the fields of the class.