On Fri, 2002-11-15 at 11:07, Dmitri Colebatch wrote: > > 2) If I have create a Entity Bean, and if I create Session Beans to make > > the callback interface for the clients, I would have several Session > > Beans for every client's request. But how many Entity Beans would I have > > in my container? Only one, right? All Session Beans would go to the same > > Entity Bean? > > in this context it is not clear what you mean by "Entity Bean". Depending > on the container's implementation and configuration you may or may not have > more than one instances of the entity bean class. Having said that I think > all containers nowdays support a one-instance approach. Access to the > entity bean is then synchronized, to get concurrent access to data (only one > client requiring a write lock) most containers also support multiple > instances...
Well, I would like to have just one graph instance (probably a BMP Entity Bean as you suggested), because it can be very heavy in consumption of memory, and I cannot permit that the container create more than one instance like stateless session beans instances. So I would like that session beans make requests to the initialized graph data of the entity bean (always the same). And, I can tell that the initialize time of a graph would be a long and not acceptable to answer a request in real time. So besides the large amount of memory a graph (~entity bean) would need, the initialize time would be not satisfactory to handle requests each time a entity bean would be created. Probably, I would map my graph data to the session beans which would run the Dijkstra algorithm. So, can you point me some topics to configure a BMP Entity Bean to be just instance bean? I'm using JBOSS 3.x. pedro -- pedro salazar (pt-inovacao) <[EMAIL PROTECTED]> key id: D803BC61 =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
