If partial lists in not a solution then I don't think it's a problem of displaytag.
You could use PartialList interface to mimic the sorting and paging, but I don't know exactly how could you export all of the data.
I guess you could extend some classes to query the EJBs without the paging & sorting attributes so that only when an export is done you get all the data.
If this is any help I can give you more pointers in partial list, if not good luck with your application !
Regards,
Narcis
From: "Shah, Shrihas (OFT)" <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, December 12, 2006 4:45:33 PM
Subject: [displaytag-user] Architecture Question.
Hi:
We are a websphere 6 shop running 2 appservers in clustered environement.
In one of our app, we have backend EJB environment (Not Hibernate for this app) and front side Strtus and we use displaytag library to display data that we receive from EJB’s.
The issue is that we retrieve about 5000 records from Database and we store them in session. The reason we store them in session is because we have paging and export functionality on these pages. There are many pages like that. Our session timeout is about 4 Hrs. We cannot chage these parameters.
This causes stale data to be stored in session memory for long time. Also if we do session sharing in our clustered environment, large amount of data will be transferred/shared between both the servers. This causes problems for other applications when they need memory. What can be the possible solution to this problem?
One of the way I was thinking is that, we should have some caching functionality and store this data in cache and retrieve them as necessary and store only necessary data in HTTP Request object. For this solution any suggestions on caching solutions?
Any other idea that anybody can suggest?
Thanks in advance for your suggestions.
Shrihas
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