StackOverflowError with th entity framework?

[hrstoyanov]

Environment Details

• EclipseStore Version: 2.0.0
• JDK version: 22
• OS: macos
• Used frameworks: irrelevant

Describe the bug

Consider the following ES code of two entities pointing to each other:

public interface Email extends Entity {
  User user();
}
public interface User extends Entity {
   List<Email> emails();
}

Currently the entity code generator will generate toString() to entities and data object that end up using the (also generated) UserAppendable and EmailAppendable objects, both of which have a generated method:

public VarString appendTo(VarString vs) {...}

However, if you look carefully at the generated appendTo code, it leads to infinite recursion, if for some reason one calls the toString() method on an entity or data object! This is particularly annoying in the IntelliJ debugger, as it wants to convert objects to strings for display purposes, steping through the code, leading to very slow debugging, since at each step it generates StackOverflow exception due to the infinite recursion cause by toString().

[hrstoyanov]

Perhaps the best approach is to make toString() in generated code optional, disabled by default?