Hi there.
Maybe someone could help me with my problems..

I am developing a web application ( CMS , Struts + Hibernate) and came across some problems apparently with caching.

The thing is that when I create some new child entity and add it to parent (updating it ;keep in mind that I set cascade="all" for the corresponding list mapping) I can see that child in the UI layer (that is getXXX retrieved that new child) and I also can see that child in appropriated database table (the new row).
But when I hit F5 in a browser subsequently (forcing a corresponding getXXX to retrieve children each time I hit F5) I see that the new child sometimes disappears and after continuing hitting F5 it appears again (and so on...)

Maybe somone could tell me what the problem with inconsistent data while calling getXXX to retrieve child collection could be related to?

thanks in advance,

Igor

i'm pretty sure you have a mistake in your hibernate session management.
Check open session in view (search in the site), you need threadlocal pattern... it's a complicated word but it is very simple to use and it will simplify your life

Actually, I am using ThreadLocal patter in my application (as described in Hibernate documantation).
I have implemented a service to wrap up this pattern.

The thing is that my application is multitired, so I'm closing session after each save, update or read of business objects.
And after I add new child object to its parent, update parent and save the new child, I have that object in collection but it disappears and then again appears (and so on and so on) after performing multiple reads (triggered by refreshing the browser's content).
So I'm pretty sure I got problems with session's cache, though can't figure out the cure by now...

Is there a way to explicitly invalidate cahce?

If you do not use the 2nd level cache (default bahavior wo explicit mapping), the session is the only cache container. So there is no reason not to be synchronized.