On 25.08.2006, at 17:05 Uhr, Miguel Arroz wrote:
What's the best way to detect a deleted object that has been deleted in another app instance?
I don't know what the best way is. In a situation where you are showing a list to the user, on a different instance a different user deletes one of the objects you are showing and user 1 selects exactly this from the list to do something with it and try to save it, you get an EOGeneralAdaptorException.
I don't know whether there is any "good" way of handling this. In my recent project I do inserts to the DB whenever an object is displayed - so I instantly get a problem, when I select an object from a list, that has been deleted from the DB. I catch the exceptions there and throw my own "ObjectDeletedException" so a mechanism somewhere else (higher in the chain of command - e.g. Application) can handle it.
As I'm using my own base framework which has list (sub component) and edit (page level) components that are the base for every list and edit / inspect page I build (and components for several other tasks) this is no real problem because I have solved this problem once and hopefully for most cases.
cug -- PharmaLine, Essen, GERMANY Software and Database Development _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
