RE: Accessing PO session data from business objects

I think you are right. It seems that classic data/business/presentation
architecture is broken in my application. 
The reason why I need session information in the business or even data
layer is that I want to log changes applied to the object as well as the
user who made them. By modifying DODS templates I was able to accomplish
this. Now, imagine that I want to use my data and business layers with a
different presentation layer, which does not maintain required session
information. What I would need to do is just use original DODS templates
to regenerate the data layer and that's it.
It seems that this approach allows using logging functionality as a
plug-in, which is very convenient.
Ideas, comments?

Thanks.

Oleg

-----Original Message-----
From: Jeremy Ferry [mailto:jferry@xxxxxxxxxxxxx] 
Sent: Thursday, May 15, 2003 10:52 AM
To: enhydra@xxxxxxxxxxx
Subject: RE: Enhydra: Accessing PO session data from business objects
Importance: Low


Seems to me like you should be able to easily work around this by
looking more carefully at which layer is doing what. In my applications,
everything that I need to do with the request and session data is
handled in the PO. If my business classes need data from the
presentation layer, which they invariably do, I pass it in. Basically, I
don't allow my business classes to have direct access to the resources
in the presentation layer. So, maybe I'm missing something but I think
you should be able to do this without needing to give your business
classes direct access to the session.

Jeremy

> -----Original Message-----
> From: enhydra-admin@xxxxxxxxxxx
> [mailto:enhydra-admin@xxxxxxxxxxx] On Behalf Of Oleg Lebedev
> Sent: Wednesday, May 14, 2003 3:26 PM
> To: enhydra@xxxxxxxxxxx
> Cc: enhydra-zh@xxxxxxxxxxxxx
> Subject: Enhydra: Accessing PO session data from business objects
> 
> 
> 
> Question: Does anyone know if it is possible to access data
> of the PO session that invoked a method in a business object 
> from inside the business object? 
> 
> Example: Suppose a user clicks Save button on a webpage,
> which triggers invocation of save() method in the 
> corresponding business object. Can I access this user session 
> information from within the save() method of this business 
> object? Thanks.
> 
> Oleg
> 
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