A Web application + API for non web clients

Hi there,
I am new to the java enterprise world, i have a query regarding the application i am developing currently, I am not sure this is the exact category to ask this question but please help me on this.
In very simple terms my applications job is to give a listing or view of files distributed across network.
For this I need to have a webApp which can provide a view to all web clients. (where view is nothing but listing of files independent of there location)
Because this view tells nothing more than files , and i am as data center administrator cannot tell much about data, so we need to provide APIs so other applications (WebAPP or anything else)
can present the view in more data specific terms.
The webapp part is fine with me, but how do i support API being on an application server like glassfish.
Please help me on this.
Thanks in advance
AP

Dear all,
Anyone can help me to clear this problem ?

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Hi,
At the DB level I tried to query non existing value from the table, query came out with "no rows selected" . But when I try to do the same from front end, application hangs! I just checked in the statspack report it shows like query is taking more cpu time to execute. what could be the reason for this?
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With Regards
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Elke,
Thank you for the information. I defintely have some other options to consider now.
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A Web application + API for non web clients

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