How to reduce the amount of metadata when there are a lot of reflections in the code.

[wangliang181230]

Describe the problem
See a class:

public class ClassAlias {

    private static final Map<String, Class<?>> CLASS_ALIAS = new HashMap<>();

    static {
        addAlias("class1", Class.forName("Class1")); // in the `native-image`, throw `ClassNotFoundException`.
        addAlias("class2", Class.forName("Class2"));
        addAlias("class3", Class.forName("Class3"));
        addAlias("class4", Class4.class); // in the `native-image`, the clazz will be a null value.
        addAlias("class5", Class5.class);
        addAlias("class6", Class6.class);
        ......
        addAlias("class99", Class.forName("Class99"));
        addAlias("class100", Class100.class);
    }

    public static void addAlias(String alias, Class<?> clazz) {
        CLASS_ALIAS.add(alias, clazz);
    }

}

Please see a specific class: https://github.com/x-stream/xstream/blob/master/xstream/src/java/com/thoughtworks/xstream/XStream.java

Can I only add 100 metadata? Or are there other simpler configurations?

Additional context
Add any other context about the problem here.

System Info (please complete the following information):

• OS: [e.g. Windows]
• GraalVM Version [e.g. 22.0 CE]
• Java Version [e.g. 17]
• Plugin version [e.g. native-gradle-plugin:0.9.10]

To Reproduce
If possible please attach a complete reproducer here (either as a zip file or as a link to public repository/branch).

[vjovanov]

We are working towards a way to do this kind of definition in the code of the project. This is expected to land in the next release of GraalVM as a preview feature. Until then, we can only do this via JSON.

[wangliang181230]

OK, I understand.
Thank you for your answer.
Look forward to the next release.

[wangliang181230]

@vjovanov @dnestoro Is there a new feature?

[vjovanov]

Yes, the example above should already work with Native Image. When forName gets a literal it should be converted directly into a class. If that is not the case please open a ticket.