QueryBean IllegalAccessError is thrown with @Embeddable and @EmbeddedId in different packages

[casmir]

We are trying to update to a later version of Ebean (coming from 12.x) , but are encountering some errors while doing so.
One of them is related to Querybeans throwing an IllegalAccessError with @embeddable class in another package.

Expected behavior

We expect the following line to work without throwing an exception.

new QContentWithEmbeddedId().select(QContentWithEmbeddedId.alias().embeddableId).findList()

QueryBeans not to throw the IllegalAccessError when the @embeddable class is not in the same package.
We're reusing an @embeddable class in multiple Entities, therefore have moved it to another 'common' package structure.

This issue/bug was introduced after #3455 . (14.5.0 works, 14.6.0 onwards fails)

Actual behavior

An IllegalAccessError is thrown:

java.lang.IllegalAccessError: class org.example.content.model.query.QContentWithEmbeddedId tried to access protected method 'void org.example.common.embedded.query.QEmbeddableId$Assoc.<init>(java.lang.String, java.lang.Object)' (org.example.content.model.query.QContentWithEmbeddedId and org.example.common.embedded.query.QEmbeddableId$Assoc are in unnamed module of loader 'app')
	at org.example.content.model.query.QContentWithEmbeddedId.<init>(QContentWithEmbeddedId.java:3)
	at org.example.content.model.query.QContentWithEmbeddedId.<clinit>(QContentWithEmbeddedId.java:16)

Steps to reproduce

Created sample project : https://github.com/casmir/ebean-querybean-protected-assoc

Create an embeddable class in one package and use that with an Entity in another package.

package org.example.common.embedded;

@Embeddable
public class EmbeddableId {

    @Column(length = 19)
    private Long id;

    @Column(length = 50)
    private String other;

 ....
}

package org.example.content.model;

import org.example.common.embedded.EmbeddableId;

@Entity
@Table(name="product_history")
public class ContentWithEmbeddedId extends Model {

    @EmbeddedId
    private EmbeddableId embeddableId;
    
.....

}

From what I can tell it is related to the change made in file :
querybean-generator/src/main/java/io/ebean/querybean/generator/SimpleQueryBeanWriter.java

writeAssocBeanConstructor("protected Assoc");

Could you tell me if this is indeed a bug, or has this been done for a particular reason.

Thanks,

Cas

[rbygrave]

This is a bug, I'll prepare a PR to fix it.