This week's book giveaway is in the OCAJP 8 forum.
We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line!
See this thread for details.
The moose likes Object Relational Mapping and the fly likes entity loading blues Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of OCA Java SE 8 Programmer I Study Guide this week in the OCAJP 8 forum!
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "entity loading blues" Watch "entity loading blues" New topic

entity loading blues

Tudor Raneti
Ranch Hand

Joined: Nov 29, 2009
Posts: 145
I got this scenario:
a query from wich i need to return a list of beans, that i don't want persisted.

The question is:
Can i do that directly speifying the bean like:

w/o having to map the Person to a table?

Closest answer for that from what i found is the one below, but i need to know the answer to the above question, it makes the following solution redundant.
EDIT: shortest question would be: how can i externalize a named query w/o an entity, and also map the result set to a bean with the least configuring possible.
Tudor Raneti
Ranch Hand

Joined: Nov 29, 2009
Posts: 145
Well, the only way to populate non-entity beans is to use Transformers.aliasToBean() it seems. BTW, it only accepts the column name, not an alias of it. It only needs matching type with the bean fields / public accesor methods.

Otherwise externalizing a SQL query, is as simple as:

and registering it in the hibernate config file.
Shaun M. Smith

Joined: Jul 06, 2010
Posts: 1
Seeing your posting I blogged about how to do this in EclipseLink here:

I agree. Here's the link:
subject: entity loading blues
It's not a secret anymore!