MySql BPEL process stale data while updating

Hi all,
I have a application in mysql. There is a BPEL process tht polls the mysql database and polling strategy is delete the row after reading. (Since there is no MySQL adapter available i have created offline tables and toplink without using the adapter wizard). When a record is updated in mysql it gets reflected in the database. But when the BPEL process polls the table for the updated record, the message takes the stale values (values before updation).
Thanks in advance,
Anant.

Hi Anant,
there is no caching issue here.
The delete polling strategy only allows you to poll for inserts. It does not allow you to poll for updates, for as soon as you insert a row a message is created and the row is deleted. To trigger a new message for that row reflecting updated values, you need to re-insert it into the table being polled.
Regardless to poll for updates please use the LogicalDeletePollingStrategy, where a row is updated after being read, instead of deleted. This way you can trigger a new message on update (by resetting the 'processed' field to false), and control when the row is first picked up (by inserting rows with 'processed' equal to true).
Also if there is any kind of counter field (like a timestamp) that gets updated on writes, then I would suggest the LastReadId/LastUpdated strategies, which are less intrusive.
Thanks
Steve

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