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- WEBDAV Working Group
- Munich IETF
- August 11, 1997
-
- A meeting of the World Wide Web Distributed Authoring and
- Versioning (WEBDAV) Working Group was held at the Munich IETF on
- August 11, 1997. Jim Whitehead chaired the meeting, and Del
- Jensen recorded meeting notes. Over the duration of the meeting
- there were 54 attendees. These minutes, the agenda, and slides
- presented during the meeting are accessible on the Web at URL
- <http://www.ics.uci.edu/~ejw/authoring/munich/>.
-
- The meeting began with a review of the agenda, which was accepted
- without modification. Following this, Jim Whitehead began a
- series of three presentations. The first presentation was a
- brief high-level overview of the functionality being considered
- by the WEBDAV working group. This included information on the
- status of the requirements document, which should have a new
- version out by August 27, 1997, the protocol document, which
- should have a new draft out by August 29, 1997, and the scenarios
- document, on which work has stalled. It is expected that the
- requirements document will begin a working group last call after
- this next draft has been released. This is the final step before
- forwarding this document along to the IESG.
-
- After this presentation, Jim Whitehead gave another presentation
- outlining the key design elements of the properties, collections,
- and namespace operations aspects of the protocol specification.
- Notes on this presentation follow:
-
- 1. Properties
- a. Definition and structure
- b. New methods
-
- 2. Collections
- a. Definition and structure
-
- Q: Why have internal members? Why are not all members specified
- as external (absolute URIs)?
- A: The well-defined specification of existing methods on external
- members can be problematic across namespace boundaries. Internal
- membership is convenient for modeling file system behavior, which
- one anticipates to be a common use for collections. Container
- models that are more exotic than the simple hierarchical model
- are not excluded by the proposed structure for collections.
- b. Methods
-
- 3. The Source Link
-
- Once the two overview presentations were completed, Jim Whitehead
- led a discussion of open issues using slides which listed the
- issue, gave pro and con discussion on the issue, and then listed
- a recommended resolution to the issue. Discussion on these
- issues is summarized below -- for more detail consult the
-
-
-
-
-
-
- original slide presentation.
-
- A. Property Instance URL encoding
- Problem: Get rid of the DAV switch
- Solution: Discovery of Property names
- Informal Poll: Adopted
-
- B. Retrieval of Properties
- Problem: Search is too complicated for WEBDAV scope
- Solution: Simplified set of methods to retrieve property
- names and values on a by-resource basis.
- Informal Poll: Adopted
-
- C. Property Attributes
- Problem: Resource level granularity for property attributes
- (e.g., live, readonly) can make schemas
- inconsistent
- Solution: Raise attribute granularity to schema level.
- Informal Poll: Adopted
-
- D. Method Recursive Semantics for Collections
- Problem: Agreement on well-defined extension of current
- methods is hard to get, and aspects of this
- problem are arguably outside the scope of WEBDAV.
- Solution: Define only "level 0" behavior.
- Informal Poll: Adopted
-
- E. Atomic Locking of Collections
- Problem: The current requirements document specifies that
- WEBDAV provide this functionality. The protocol
- draft may provide only a partial solution.
- Solution: None
-
- F. Support for Variants
- Problem: The current specification is silent on how to add
- or change resource variants.
- Solution: None at present, take to list (possibilities:
- transparent content negotiation, content-location
- header, translation-of/supercedes relationships)
-
- *** Meeting adjourned ***
-