self referencing Entity in liferay service builder

[Alireza Goli，修改在6 年前。]

Hi,
Is there any way to create self referencing entity in liferay service builder? something like:

public class comment{
public List<comment> answers;
}

thanks,
Alireza

[Christoph Rabel，修改在6 年前。]

I am guessing here that you want to have "childcomments".

You could add a long parentCommentId to the entity in the service.xml. With that parentId you could create a tree of comments. Then add a finder for parentId.

Then you could add a method to the CommentModelImpl class.

public List<comment> getSubComments() {
return persistenceSomething.findByParentId(this.commentId);
}

Note: I am not sure if the comment persistence interface is available in the ModelImpl class. You might need to add a getSubComments(long commentId) in the CommentLocalServiceImpl and call that one instead.

[Alireza Goli，修改在6 年前。]

Thanks