Support Record as Back Bean property

[hantsy]

Assume we have a backing bean like this.

@ViewScoped
@Named("todosHome")
class TodosHome{
   private TodoForm form;

   // setters and getters.
}

And TodoForm here is a record.

record TodoForm(String title){}

In the faceslets xhtml page, it should can be bound to a html form.

<input jsf:value="#{todosHome.form.title}/>

[arjantijms]

Sounds good. Let's see what we can do to support this. My gut feeling says it's an Expression Language issue and not directly something Faces does.

[hantsy]

I am not sure if this is just an EL binding work.

[arjantijms]

Oh well, we can investigate it here first and see what's needed.

[tandraschko]

I think that must be implemented in BeanElResolver in el-specs

[BalusC]

It's indeed in EL. See also https://balusc.omnifaces.org/2020/11/using-java-14-records-in-jsf-via-eclipse.html

[hantsy]

It's indeed in EL. See also https://balusc.omnifaces.org/2020/11/using-java-14-records-in-jsf-via-eclipse.html

It can not bind values from a HTML form.

There is no copy method like the Kotlin data class, ideally when set a new value, create a new instance and copy values from the old instance.

[tandraschko]

create a issue in EL specs

[pizzi80]

Jakarta EE 11 will be Java 21+ and will include Jakarta Persistence 3.2 which has support for java records

https://jakarta.ee/specifications/persistence/3.2/

... Did someone forgot to align the specs with the "web" tier?

[tandraschko]

thats up to EL

[BalusC]

Currently already implemented in EL 6.0 as per https://github.com/jakartaee/expression-language/issues/201