Stephan--
I can't speak to what they're doing, but the general idea here is something
like this:
Client --> Servlet --> CORBA Business Model --> DB/Repository/etc.
The advantage of using the CORBA Business Model in between, aside from
access to other CORBA objects and/or facilities, is that you can also build
something like this if you choose to:
C++ GUI Client --> CORBA Business Model
Java GUI Client --> CORBA Business Model
Java GUI Applet --> CORBA Business Model
ad infinitum. CORBA isn't the only technology you can do this with--RMI and
EJB are just two more possibilities. The key is to build a business model
layer in between to protect access to the database and offer some
abstraction and encapsulation about the underlying model.
Note that not all business model classes will represent database
entities--you may actually have situations where the business model class
encapsulates access to a legacy system, an external machine component such
as a DNA scanner, plastics molding machine or even a coffee machine (see the
RFC for the HTTTP protocol), or perhaps act as an interface for batch-driven
"clients". Regardless, the actual mechanics of the underlying implementation
are shielded from you, and thus you are protected if those mechanics change.
Ted Neward
Patterns/C++/Java/CORBA/EJB/COM-DCOM spoken here
http://www.javageeks.com/~tneward
"I don't even speak for myself; my wife won't let me." --Me
-----Original Message-----
From: Scheiderer, Stephan <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Monday, July 26, 1999 10:34 PM
Subject: AW: servlet-corba
>Can someone explain the concept behind this. Im interested in this
>architecture, but I don't understand what you are exactly doing... Servlets
>and CORBA!?! Or do you have an application in java and you just want to
make
>the output in HTML or !?! :-)
>
>> -----Urspr�ngliche Nachricht-----
>> Von: Pawel Skrzypek [SMTP:[EMAIL PROTECTED]]
>> Gesendet am: Montag, 26. Juli 1999 11:02
>> An: [EMAIL PROTECTED]
>> Betreff: Re: servlet-corba
>>
>> mahesh wrote:
>>
>> > Hi Greetings!!!!!!
>> > I am woking in a project of developing product in JAVA/CORBA . We
have
>> > already
>> > done the application part. Now we have to make the browser version of
>> the
>> > project. We r using HTML-Servlet-CORBA for this purpose. Here we r
>> facing a
>> > problem of ORB initialisation in servlet to contact the server. As
>> > ORB.init(String[],Properties) needs command line arguments, we dont
know
>> how
>> > to get that in servlet.
>>
>> Try ORB.init without parameters or try ORB.init(null,null). I'm using
>> JacORB orb
>> and in my servlet ORB.init without parameters working.
>>
>> > Which servlet class accomplish this. If u could
>> > provide some guidance on this or any site address from where I can get
>> > enough info, I will be very thankful to u.
>> > looking forward
>> > thanks and regards
>> > Mahesh V. C
>> > Software Engineer,
>> > Transformation Systems,
>> > 140,Marshall's Road,
>> > Egmore,
>> > Chennai - 600 008;
>> > Phone: 044-8526077 - 108(ex)
>> > 044- 4813555 - room no-33(res);
>> >
>> >
>>
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