Forum: JRuby How to use ActiveRecord to persist POJO, or ideas about mass assignments of attributes to/from POJOs

Greetings.   Thanks to decoupling in ActiveModel & ActiveSupport I can 
add
mix ins to pojo classes to make them appear as ActiveModel.
In this way I can create view helpers, controllers, routes, etc. 
However, I
can't seem to figure a way to have POJO classes behave as ActiveRecord
(actually persist the pojo)

see
http://yehudakatz.com/2010/01/10/activemodel-make-...


*CardApplicant = com.foobar.model.CardApplicant*
*class CardApplicant*
*  # mix in activemodel*
*  extend ActiveModel::Naming*
*  include ActiveModel::Serialization*
*  include ActiveModel::Serializers::JSON*
*  include ActiveModel::Serializers::Xml*
*  include ActiveModel::Conversion*
*  include ActiveModel::Validations*
*....*
*end*

Now my model has the methods in the java class, plus whatever I add to 
the
rails model.

Without too much trouble, I can get this to work

  *resources :card_applicants*

and this

  *def new*
*    @card_applicant = CardApplicant.new*
*    respond_to do |format|*
*      format.html # new.html.erb*
*      format.json { render json: @card_applicant }*
*    end*
*  end*



However, in order to use ActiveRecord to persist, I need to create a
separate rails model.
That is then used for persistence and hooked to the controller and when 
I
need the pojo, I need to create a new one and mass assign properties to 
and
from the activerecord model to and from the pojo.  This is expensive and
error prone.

Any ideas or suggestions would be appreciated.

-b







-Brian Walsh