Peter
I see no gain in using EJB for this. If you have a need for applying
algorithms, data-reduction and so on... sending the resulting set to the
graphing applet it might be useful to do that in an EJB.
Tony
----
"Booth, Peter" wrote:
>
> Hello,
>
> I welcome any opinions on whether the following small project
> sounds like a suitable pilot EJB project:
>
> I have an applet that currently uses cgi to connect to a legacy
> graphing application on a web server. The graphing application
> queries a database and produces line graphs as pdf files.
>
> My project is to replace the legacy graphing app with an N tiered
> graphing app. I had initially planned to use servlets to read data via
> JDBC and return the time series data to the applet, which would build
> the graph objects using a third party tool. The app is not really
> transactional
> in nature, I am interested in evaluating EJB technology with a project
> where there is some pay-off.
>
> Is there any gain in using entity EJBs to read data from a database?
> The database stores a historical set of data points and is written to on
> a daily basis. A typical graph would involve reading say eight curves
> each with 2000 points. There will be perhaps 30 concurrent users.
> Would EJB make it any easier to cache commonly used data?
>
> Any opinions welcome.
>
> Peter Booth
> [EMAIL PROTECTED]
>
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--
Tony Holderith | Interactive Business Solutions
[EMAIL PROTECTED] | NetCentric Solutions
http://www.interactivebusiness.com | Business Objects
voice: 310.414.6760 | fax: 310.414.6759
Don't connect to the Internet - be there. IBS
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