Hi,
I've never used 'removeSessionObject', so some/all of this is speculation:
In the course of a web event (not meaning a web event method, but the whole
sequence between receiving the request from the browser and spitting out
html), user session objects are retrieved either directly from the
persistence engine (PE) or from the a local hash table that contains values
previously fetched from the PE. My understanding is that
'putUserSessionObject' is executed against the local hashtable, and then
the PE is updated at the end of the web event.
It could be that 'removeUserSessionObject' removes the session object from
the local hash table, and then the session object is removed from the PE
only as part of the reconciliation of the local hash table and the PE at
the end of the web event. If you execute 'remove' followed by 'get' in the
same web event, it could be that ND first checks the local hash table,
finds that the session object is not there (because you removed it), then
goes out and finds it in the PE, from which the session object has not yet
been removed.
workarounds (assuming that any of the above is true):
-- after removing a session object, don't try to retrieve it in the same
web event.
-- instead of actually removing a session object, set it to a value that
means 'removed'. Then develop a central utility method that does a get on
the session object and returns the same value (or null) whether the session
object does not exist, or if it exists with the 'removed' value.
-- Curt Springer, Team ND
At 06:18 PM 7/29/99 +0530, Krupesha C wrote:
>I have a problem, where in the user session object retains its value even
>after it is killed. The else part in the following code is being executed
>always. Any body has experienced a similar problem?
>
>
>CSpider.removeUserSessionObject("RR85_TRANSFER");
>if (CSpider.getUserSessionObject("RR85_TRANSFER") == null)
>{
> log(" SessionObject RR85_TRANSFER is null");
>}
>else
>{
> log("SessionObject RR85_TRANSFER is not null");
>}
>
>log("Value after removal =" +
>CSpider.getUserSessionObject("RR85_TRANSFER"));
>
>The value of the session object is also being printed at the last line.
>The same code worked fine when I removed the session object twice.
>
>Thanks for your suggestions,
>Krupesha
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