WebDAV Collections Breakout Session

1
WebDAV CollectionsBreakout Session

• December 8, 1998
• Judy Slein
• jslein_at_crt.xerox.com

2
Issues

• Behavior of direct references
• Headers
• More on headers
• Status codes
• Dangling direct references
• Chains of direct references
• Other Issues . . .

3
Behavior of Direct References

• All methods get passed through to target except
• DELETE
• MOVE
• COPY
• Rationale for this list

4
Headers

• 1. Every response to a request on a reference
  MUST include Ref-Type
• 2. Every response to a request on a direct
  reference MUST include Ref-Target
• 3. Every (successful) response to a GET or HEAD
  request on a redirect reference MUST include
  Ref-Type, Ref-Target, and Ref-Integrity

5
More on Headers

• Which of the MKREF headers can also be used with
• MOVE
• COPY
• LOCK
• Ref-Type
• Ref-Target
• Ref-Integrity
• Hide-Target
• Do we need a Resource-Type header?

6
Status codes

• 409 (Conflict)
• where the conflict is not with the state of the
  resource, but with some other resource
• 207 (Multi-Status)
• where the method allows multiple elements in a
  single request, but the client only included a
  single element
• where a single reason explains why none of the
  elements in the request could be satisfied

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Dangling direct references

• GET, HEAD, POST, OPTIONS
• 404 (Not Found), Ref-Type, Ref-Target
• PUT, MKCOL, MKREF, DELETE, MOVE, COPY
• succeed
• PROPFIND, PROPPATCH
• 207 (Multi-Status)
• For the dangling reference 404, Ref-Type,
  Ref-Target
• LOCK/UNLOCK
• 409 (Conflict) if reference is in a collection
  that is being LOCKED or UNLOCKED
• 404 if direct reference is being LOCKED or
  UNLOCKED
• Include Ref-Type, Ref-Target

8
Chains of direct references

• How can a chain of direct references be created?
• Dangling direct references
• What happens if a reference in the middle of a
  chain gets deleted?
• Which Ref-Target gets returned in responses?
• How can I see the properties of an intermediate
  reference in the chain? Or perform any other
  operation on an intermediate reference in the
  chain?

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Other Issues . . .