Template compiler does not support preview features

I am using jte with java 15 and enabled previews, as I want to use records. However, if I have a record used in a template I get the following exception:

gg.jte.TemplateException: Failed to compile template, error at
error: classfile for /Users/alr/devel/spinscale/javalin-elasticsearch-client/out/production/classes/model/Person.class uses preview features of Java SE 15.
  (use --enable-preview to allow loading of classfiles which contain preview features)
1 error

So, having this record, using --enable-preview to activate such features for regular compilation seems it is not passed through the template compiler.

public record Person(String firstName, String lastName, String employer) {}

Template can look like this

@import model.Person;
@param Person person
{ "name" : { "first" : "${person.firstName()}", "last" : "${person.lastName()}"}, "employer" : "${person.employer()}" }

try (StringOutput output = new StringOutput()) {
    templateEngine.render("person.jte",  Map.of("person", person), output);
    return output.toString();
}

Is there any possibility to enable preview features for the template compiler? The ClassFilesCompiler class did not look like it.

[casid]

Awesome, thanks for testing it so quickly!

I will adjust the maven plugin and then close this issue, if that’s okay with you.

[spinscale]

tested and works!