Hey, > Hi, > > We have the following problem : > > The problem is that we have to deal with direct access to the > underlying > database. We absolutely cannot make all accesses go through the EJB > layer (for now that is). While this is the case, we have to > find ways to > make JBoss refresh the data from the physical database when it is > changed. > > So we thought it would be simple to add a SSB to offer cache > management > services to our "old" application to call. ie. make changes through > VB/ADO/OleDB application and "inform" the JBoss server that > those tables > need to be "flushed". > > But we do want to keep the cache, because it is more efficient. > > So we created our own LRUEnterpriseContextCachePolicy class to be able > to passivate beans with JMS messages. We actually call the ageOut > method with the beans key we want to flush by going through > the LRUList > obtains from getList() method. But there is still a problem, the beans > that are in a transaction don't get passivated. > > How can we ensure that all the beans we want to be passivate get > passivated and that, wathever is the age of the bean ? Well, you coded the new cache, so you can enforce that also bean with an active tx will be passivated, even if I would not recommend it, since it could lead to problems when the tx will be committed. Anyway, what you really need is not a passivation IMHO, but a complete reload of the beans that are in the cache from the underlying DB. Normally you can do this using commit options B or C, but you still want to have A and only sometimes (upon JMS message) a behavior like B or C. IMHO best solution will be mark all the cached beans for reload, instead of passivating them, and this can be done by a custom TimerTask simply extending LRUEnterpriseContextCachePolicy with your cache. Check the EntitySynchronizationInterceptor for informations about the flag that marks a bean for reload. HTH, Simon _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-user
