On Aug 25, 2010, at 11:10 PM, Dov Rosenberg wrote: > I am revisiting some old EOF documentation and wanted to make sure I > understood a few things. Are the following statements true? > > > * When an EOModel is found and connected to a database when the app starts > up each database connection is mapped to an EODatabaseChannel?
I think that EODatabaseContext is more correct than EODatabaseChannel. The context will then use the channel. A db context can handle multiple models (the connection information needs to be the same). > * A single EOObjectStoreCoordinator can manage multiple EODatabaseChannels > (database connections)? It is more meaningful to say that it manages multiple EODatabases or EODatabaseContexts. > * If I add another EODatabaseChannel to an EODatabaseContext does it open > another database connection using the existing connection dictionary? Yes, but it is unlikely to be used. > * If a single EOObjectStoreCoordinator can manage multiple > EODatabaseChannels – is there any reason to try to run multiple > EOObjectStoreCoordinator stacks if I am only connecting to a single database? Each stack is single threaded (once the OSC is locked), so the concurrent use of multiple db channels is unlikely. > * If I have multiple EODatabaseChannels registered to a EODatabaseContext – > will my app use them to allow multiple operations concurrently? Only if there are multiple concurrent operations in the _same thread_. > Is there a default number of EODatabaseChannels opened when the app starts > up? Is there a configuration setting that I can set to add more? One per db context and no. Chuck -- Chuck Hill Senior Consultant / VP Development Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems. http://www.global-village.net/products/practical_webobjects _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
