File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Object Relational Mapping and the fly likes Transparency Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Murach's Java Servlets and JSP this week in the Servlets forum!
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "Transparency" Watch "Transparency" New topic


Maxim Katcharov
Ranch Hand

Joined: Sep 07, 2004
Posts: 113
Is there a persistance framework out there that's more or less completely transparent? Yes, Hibernate, but not quite. It beats out most other technologies in terms of not being seen, but it's not fully transparent. I don't mind the intrusion of an identifier and all that, that's not what I'm getting at.

1:X | 2:Model | 3 ersistance

In Hibernate, as with everything else it seems, the objects really reside on #3. The model that you work with is not the 'real' model, and your code knows this. True transarency, to me, would be the model classes, some special collection of them (that's all, nothing more), and forcefully restarting will yield the model objects just as they were.

Here's a naive idea: say you have a new Cat(), other cats, and a big special collection of cats. allCats.add(newCat) (or someCat.setParent(newCat)) will persist said cat, and as you'd expect, losing the cat as a referance and then removing it from the collection will mean the cat is no more.

Does something like this exist, and what are your thoughts on the matter?
It is sorta covered in the JavaRanch Style Guide.
subject: Transparency
Similar Threads
Generics wilcard
How to do it using Polymorphism now
Beans found - but can't display data! Please help...
Translation and language comparison