Hi all, I'm trying to use two (BDB) store controllers, each with its own set of persistent classes. The reason is that I want to be able to modify the secondary store outside the application (it's read-only within it) and just plug-in a modified version (close-store, change directory, open-store) at some point without affecting the rest of the data.
If I just use a let binding to set *store-controller* to the secondary store around make-instance and get-instances-by-class, everything works, except I can see the class index is stored in the main store-controller, which is not good, as I want the secondary store to be independant. If I set the global *store-controller* to the secondary controller after having opened both, and even close the first one to make sure before I call defpclass or any other elephant function, the class index is created in the right store-controller this time, but I get a new one each time I open the store (empty btree with a new oid). I have tried understanding and tracing the related parts of code, but that part is not exactly easy to dive in for an elephant noob, so I was hoping that someone familiar with the code could explain what's happening, or that someone would have a trick for using multiple store controllers in this fashion. Thanks a lot, Arnaud _______________________________________________ elephant-devel site list elephant-devel@common-lisp.net http://common-lisp.net/mailman/listinfo/elephant-devel
