- From: <ccjason@us.ibm.com>
- Date: Sat, 8 Jan 2000 21:33:14 -0500
- To: Eric Sedlar <esedlar@us.oracle.com>
- cc: w3c-dist-auth@w3.org
- Message-ID: <85256861.000E114B.00@D51MTA03.pok.ibm.com>
Let's say that I have a "book" entity that I want to manifest as a collection resource (with some additional XML properties describing the book's state). In the collection is a set of HTML resources corresponding to each chapter of a book. Let's say that this book is a programmer's guide for a software product, and a couple of these chapters are about "Getting Started". Now we add an administration manual (another collection somewhere else) and I want to share the Getting Started (GS) info between books, so I want to move those chapters into a third collection containing shared resources between the manuals. I have the following collections now: /manuals/prguide /manuals/common /manuals/admin When I started working on the programmer's guide (PG), I depth:infinity lock the entire collection with a shared lock, to make sure nobody messes with the chapters while I am working. When I move the GS info out of the locked collection I want to retain these locks, since they are still part of the manual. The automatic assumptions Jason proposes regarding when locks are removed in the face of BINDs, MOVEs, etc. are not going to be correct in all cases. If I depth lock a collection, I have a perfectly valid example of when I want to retain the lock when members of a collection are moved out. There is no recourse in this situation, since reestablishing the lock introduces a race condition. Of course it sounds like you don't need to (or want to) move it out of the locked collection though. You just need to add a binding from the common collection. You get the right result that way. Even for exclusive locks. * when I refer to DELETEing a resource in my proposal earlier, I mean a DELETE that removes the last binding, deleting the associated resource. And if it is the last binding, whether the resource is locked or not is probably moot. If it isn't the last binding, then I take it you feel the resource remains locked?
Received on Saturday, 8 January 2000 21:34:06 UTC