Dan Stillman b56dcf5fbe Added more helpful error messages in DB class ... DB transactions are now automatically nested if beginTransaction() is called when one is already in progress -- the queries aren't committed until the outermost commitTransaction() is called, which is handy for calling methods with their own transactions inside others when the entire process should be a transaction (e.g. Folder.erase() calling Item.erase() for the folder's descendents). Rollbacks are a little trickier -- currently, a rollback in a nested transaction flags the entire transaction for rollback when the outermost commit is reached, which for our purposes will probably be fine.		2006-05-23 14:50:58 +00:00
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chromeFiles	Added more helpful error messages in DB class	2006-05-23 14:50:58 +00:00