How to call a TopLink Query on ADF Page Load (onload)

Hi,
I am new to ADF wants to find out how to call a TopLink Query whenever a page loads. I saw SRDemo Sample but all the queries are bound to some kind of an action method i.e. clicking on a button executes a query etc. But I need to call a toplink query on my page load. Any small sample will help.
Thanks

Try this approach:
http://blogs.oracle.com/shay/2007/07/25

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