is better to load instance before delete it?

[Leandro Coutinho]

Hi! I load instances before delete it, I mean:
MyClass instance = dao.read(id);
dao.delete(instance);

But I saw an example that he simply do this:
dao.delete(new MyClass(id));

It's simpler, and it has better performance. My doubt is if there is some problem using this approach.

[Freddy Wong]

I'm not sure if you friend's code will work.

    
dao.delete(new MyClass(id)); 

You need to retrieve the persistent object first. If you use session.load(), you will only get a proxy object and thus no database hit will occur. Then use that proxy object to delete the instance.