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Hi,

here's a LC comment by myself: the specification should state that 
SEARCH is a safe method (see 
<http://greenbytes.de/tech/webdav/rfc2616.html#rfc.section.9.1.1>).

BR, Julian



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Julian Reschke wrote:
> 
> Hi,
> 
> here's a LC comment by myself: the specification should state that 
> SEARCH is a safe method (see 
> <http://greenbytes.de/tech/webdav/rfc2616.html#rfc.section.9.1.1>).
> 
> BR, Julian

Fixed in -latest, adding:

"SEARCH is a safe method; it does not have any significance other than 
executing a query and returning a query result (see [RFC2616], Section 
9.1.1)."

(<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html#rfc.section.2.1>).

BR, Julian



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Thread-Topic: getting WebDAV SEARCH ready for the IESG
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Some comments:

In section 2.3.1 Result Set Truncation 

- Would be nice to indicate what the search limit is (after what number
of results was the query truncated)

- Partial results: I read this to mean whatever partial results you send
back, they must be ordered (within themselves)
as the client requested.  In many cases the client wants the full list
ordered, and then send back the partial results.
Any way to indicate this in the request; i.e. if you have to send back
partial results (a 507 condition) I want them fully ordered, not just
within themselves?  Perhaps the server can send back a 507 response for
the arbiter URI and no results, if it can't comply with ordering the
full result set, and sending back partial results.


In section 5.17.1 Relationship to Result Ordering

- I read this to mean that the full results should first be ordered by
the server, and then send back the requested limit.  This seems to
contradict what's specified in section 2.3.1, where the results are
limited and then ordered (if I'm reading it correctly).  I think these 2
sections should be consistent with each other.


Regards,

-John


-----Original Message-----
From: w3c-dist-auth-request@w3.org [mailto:w3c-dist-auth-request@w3.org]
On Behalf Of Julian Reschke
Sent: Wednesday, July 02, 2008 9:12 AM
To: w3c-dist-auth@w3.org
Cc: WebDAV
Subject: getting WebDAV SEARCH ready for the IESG


Hi,

we recently made some progress on getting WebDAV SEARCH ready for
publication.

We received some feedback from Chris Newman, and the latest edits on the
draft
(<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.ht
ml>,
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest-fro
m-previous.diff.html>)
take those into account.

Unless there's new feedback, I'm planning to submit this as draft 16,
which, if all goes well, will then by last called.

Feedback appreciated,

Julian




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Hi John,

thanks for the comments.

The server I worked on a long time ago never truncated results, so I 
don't have any preference.

However, it seems to me that the text in 2.3.1 was phrased this way on 
purpose -- there may be cases where it's not possible to first sort, 
then truncate. For instance, when searching can be delegated to an 
underlying SQL store, but ordering can not, how would you implement 
that? Thus, I'm hesitant doing any change over here.

If you feel strongly about that, we *could* add a statement into the 
"future extensions" appendix.

And yes, the inconsistency with 5.17.1 is a bit awkward, but I'm really 
not sure we can change this at this point of time.

BR, Julian


John Barone wrote:
> Some comments:
> 
> In section 2.3.1 Result Set Truncation 
> 
> - Would be nice to indicate what the search limit is (after what number
> of results was the query truncated)
> 
> - Partial results: I read this to mean whatever partial results you send
> back, they must be ordered (within themselves)
> as the client requested.  In many cases the client wants the full list
> ordered, and then send back the partial results.
> Any way to indicate this in the request; i.e. if you have to send back
> partial results (a 507 condition) I want them fully ordered, not just
> within themselves?  Perhaps the server can send back a 507 response for
> the arbiter URI and no results, if it can't comply with ordering the
> full result set, and sending back partial results.
> 
> 
> In section 5.17.1 Relationship to Result Ordering
> 
> - I read this to mean that the full results should first be ordered by
> the server, and then send back the requested limit.  This seems to
> contradict what's specified in section 2.3.1, where the results are
> limited and then ordered (if I'm reading it correctly).  I think these 2
> sections should be consistent with each other.
> 
> 
> Regards,
> 
> -John
> 
> 
> -----Original Message-----
> From: w3c-dist-auth-request@w3.org [mailto:w3c-dist-auth-request@w3.org]
> On Behalf Of Julian Reschke
> Sent: Wednesday, July 02, 2008 9:12 AM
> To: w3c-dist-auth@w3.org
> Cc: WebDAV
> Subject: getting WebDAV SEARCH ready for the IESG
> 
> 
> Hi,
> 
> we recently made some progress on getting WebDAV SEARCH ready for
> publication.
> 
> We received some feedback from Chris Newman, and the latest edits on the
> draft
> (<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.ht
> ml>,
> <http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest-fro
> m-previous.diff.html>)
> take those into account.
> 
> Unless there's new feedback, I'm planning to submit this as draft 16,
> which, if all goes well, will then by last called.
> 
> Feedback appreciated,
> 
> Julian
> 
> 
> 
> 
> This email and any attachments may contain confidential and proprietary
> information of Blackboard that is for the sole use of the intended
> recipient.  If you are not the intended recipient, disclosure, copying,
> re-distribution or other use of any of this information is strictly
> prohibited.  Please immediately notify the sender and delete this
> transmission if you received this email in error.
> 




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From: "John Barone" <jbarone@xythos.com>
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> However, it seems to me that the text in 2.3.1 was phrased this way on
purpose
> -- there may be cases where it's not possible to first sort, 
> then truncate. For instance, when searching can be delegated to an
underlying 
> SQL store, but ordering can not, how would you implement that? 
> Thus, I'm hesitant doing any change over here.

Completely understood.  I'm just saying a client may not want results
that aren't ordered over the entire result set.  It might be preferred
to get no results (and have to further refine the search) than to get
truncated results that aren't "globaly" ordered.


> If you feel strongly about that, we *could* add a statement into the
"future extensions" appendix.

I don't feel that strongly about this, just a nice-to-have for some
clients.


> And yes, the inconsistency with 5.17.1 is a bit awkward, but I'm
really not
> sure we can change this at this point of time.

This I think is a bigger deal.  If you acknowledge that some servers
cannot (at least easily) order a global result set and then limit the
results returned, then how can this be a MUST?  Seems like the same
issue to me.

-John


John Barone wrote:
> Some comments:
> 
> In section 2.3.1 Result Set Truncation
> 
> - Would be nice to indicate what the search limit is (after what 
> number of results was the query truncated)
> 
> - Partial results: I read this to mean whatever partial results you 
> send back, they must be ordered (within themselves) as the client 
> requested.  In many cases the client wants the full list ordered, and 
> then send back the partial results.
> Any way to indicate this in the request; i.e. if you have to send back

> partial results (a 507 condition) I want them fully ordered, not just 
> within themselves?  Perhaps the server can send back a 507 response 
> for the arbiter URI and no results, if it can't comply with ordering 
> the full result set, and sending back partial results.
> 
> 
> In section 5.17.1 Relationship to Result Ordering
> 
> - I read this to mean that the full results should first be ordered by

> the server, and then send back the requested limit.  This seems to 
> contradict what's specified in section 2.3.1, where the results are 
> limited and then ordered (if I'm reading it correctly).  I think these

> 2 sections should be consistent with each other.
> 
> 
> Regards,
> 
> -John
> 
> 
> -----Original Message-----
> From: w3c-dist-auth-request@w3.org 
> [mailto:w3c-dist-auth-request@w3.org]
> On Behalf Of Julian Reschke
> Sent: Wednesday, July 02, 2008 9:12 AM
> To: w3c-dist-auth@w3.org
> Cc: WebDAV
> Subject: getting WebDAV SEARCH ready for the IESG
> 
> 
> Hi,
> 
> we recently made some progress on getting WebDAV SEARCH ready for 
> publication.
> 
> We received some feedback from Chris Newman, and the latest edits on 
> the draft 
> (<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.
> ht
> ml>,
> <http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest-f
> ro
> m-previous.diff.html>)
> take those into account.
> 
> Unless there's new feedback, I'm planning to submit this as draft 16, 
> which, if all goes well, will then by last called.
> 
> Feedback appreciated,
> 
> Julian
> 
> 
> 
> 
> This email and any attachments may contain confidential and 
> proprietary information of Blackboard that is for the sole use of the 
> intended recipient.  If you are not the intended recipient, 
> disclosure, copying, re-distribution or other use of any of this 
> information is strictly prohibited.  Please immediately notify the 
> sender and delete this transmission if you received this email in
error.
> 




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John Barone wrote:
>> However, it seems to me that the text in 2.3.1 was phrased this way on
> purpose
>> -- there may be cases where it's not possible to first sort, 
>> then truncate. For instance, when searching can be delegated to an
> underlying 
>> SQL store, but ordering can not, how would you implement that? 
>> Thus, I'm hesitant doing any change over here.
> 
> Completely understood.  I'm just saying a client may not want results
> that aren't ordered over the entire result set.  It might be preferred
> to get no results (and have to further refine the search) than to get
> truncated results that aren't "globaly" ordered.

I do agree that this may be more useful. I'm just skeptic about making 
this change many years after people have written implementations.

>> If you feel strongly about that, we *could* add a statement into the
> "future extensions" appendix.
> 
> I don't feel that strongly about this, just a nice-to-have for some
> clients.
> 
> 
>> And yes, the inconsistency with 5.17.1 is a bit awkward, but I'm
> really not
>> sure we can change this at this point of time.
> 
> This I think is a bigger deal.  If you acknowledge that some servers
> cannot (at least easily) order a global result set and then limit the
> results returned, then how can this be a MUST?  Seems like the same
> issue to me.

I just checked the document's history, and that particular requirement 
was added in 2003, see the thread around 
<http://lists.w3.org/Archives/Public/www-webdav-dasl/2002OctDec/0033.html>. 
Back then we probably did not realize that we're introducing an 
inconsistency between truncation (server enforced) and limiting (on 
behalf of the client).

If this is a minor problem, we should just state it somewhere. If it's a 
major problem, we could try to fix it. The server I worked on didn't 
truncate, so I don't have a strong preference. That being said, it would 
be interesting to know how the other servers (Xythos, Catacomb, 
Slide...?) behave...

BR, Julian






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Another comment on this; there doesn't seem to be any discussion about
issuing a SEARCH and limiting on multi-valued properties, in the WHERE.
Is this beyond the scope of this particular draft, or is this treated in
some other specification/draft?

Regards,

-John 

-----Original Message-----
From: w3c-dist-auth-request@w3.org [mailto:w3c-dist-auth-request@w3.org]
On Behalf Of Julian Reschke
Sent: Wednesday, July 02, 2008 9:12 AM
To: w3c-dist-auth@w3.org
Cc: WebDAV
Subject: getting WebDAV SEARCH ready for the IESG


Hi,

we recently made some progress on getting WebDAV SEARCH ready for
publication.

We received some feedback from Chris Newman, and the latest edits on the
draft
(<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.ht
ml>,
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest-fro
m-previous.diff.html>)
take those into account.

Unless there's new feedback, I'm planning to submit this as draft 16,
which, if all goes well, will then by last called.

Feedback appreciated,

Julian




This email and any attachments may contain confidential and proprietary
information of Xythos that is for the sole use of the intended
recipient.  If you are not the intended recipient, disclosure, copying,
re-distribution or other use of any of this information is strictly
prohibited.  Please immediately notify the sender and delete this
transmission if you received this email in error.



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The Xythos server currently doesn't implement the limit feature.  The
server does truncate results based on a server setting.  Making sure the
truncated results are globally ordered is difficult, for the reasons you
outlined and particularly when the search spans multiple data stores.
Implementing the limit feature would pose the same ordering challenges.
I think making 5.17.1 a MUST places a heavy burden on the server
implementation.

-John

-----Original Message-----
From: Julian Reschke [mailto:julian.reschke@gmx.de] 
Sent: Monday, August 04, 2008 9:24 AM
To: John Barone
Cc: w3c-dist-auth@w3.org; www-webdav-dasl@w3.org
Subject: Re: getting WebDAV SEARCH ready for the IESG

John Barone wrote:
>> However, it seems to me that the text in 2.3.1 was phrased this way 
>> on
> purpose
>> -- there may be cases where it's not possible to first sort, then 
>> truncate. For instance, when searching can be delegated to an
> underlying
>> SQL store, but ordering can not, how would you implement that? 
>> Thus, I'm hesitant doing any change over here.
> 
> Completely understood.  I'm just saying a client may not want results 
> that aren't ordered over the entire result set.  It might be preferred

> to get no results (and have to further refine the search) than to get 
> truncated results that aren't "globaly" ordered.

I do agree that this may be more useful. I'm just skeptic about making
this change many years after people have written implementations.

>> If you feel strongly about that, we *could* add a statement into the
> "future extensions" appendix.
> 
> I don't feel that strongly about this, just a nice-to-have for some 
> clients.
> 
> 
>> And yes, the inconsistency with 5.17.1 is a bit awkward, but I'm
> really not
>> sure we can change this at this point of time.
> 
> This I think is a bigger deal.  If you acknowledge that some servers 
> cannot (at least easily) order a global result set and then limit the 
> results returned, then how can this be a MUST?  Seems like the same 
> issue to me.

I just checked the document's history, and that particular requirement
was added in 2003, see the thread around
<http://lists.w3.org/Archives/Public/www-webdav-dasl/2002OctDec/0033.htm
l>. 
Back then we probably did not realize that we're introducing an
inconsistency between truncation (server enforced) and limiting (on
behalf of the client).

If this is a minor problem, we should just state it somewhere. If it's a
major problem, we could try to fix it. The server I worked on didn't
truncate, so I don't have a strong preference. That being said, it would
be interesting to know how the other servers (Xythos, Catacomb,
Slide...?) behave...

BR, Julian






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John Barone wrote:
> The Xythos server currently doesn't implement the limit feature.  The
> server does truncate results based on a server setting.  Making sure the
> truncated results are globally ordered is difficult, for the reasons you
> outlined and particularly when the search spans multiple data stores.

...another good point I forgot.

> Implementing the limit feature would pose the same ordering challenges.
> I think making 5.17.1 a MUST places a heavy burden on the server
> implementation.

One alternative would be "SHOULD", another one would be just stating 
that DAV:limit is optional, and servers that can't do the MUST level 
requirement should reject the query.

Any preference?

BR, Julian



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John Barone wrote:
> Another comment on this; there doesn't seem to be any discussion about
> issuing a SEARCH and limiting on multi-valued properties, in the WHERE.
> Is this beyond the scope of this particular draft, or is this treated in
> some other specification/draft?
> 
> Regards,
> 
> -John 

Short answer: out of scope.

Long answer: this requires a common understanding of what multivalued 
properties are, and how they are serialized.

A proposal was contained in a draft of what later was published as RFC 
4316, see 
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-property-datatypes-06.html#rfc.section.A>. 
Back when we discussed this, there was a preference of keeping things 
simple, and so it was removed from subsequent drafts.

That being said, I know that the proposal was implemented both by SAP 
and Xythos (although likely in different namespaces). I would be happy 
to resurrect that part of the spec as a separate activity, but today I 
wouldn't be able to update the SAP implementation anymore.

BR, Julian





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I think that would be worthwhile, but need not muddy these discussions.

-John 

-----Original Message-----
From: Julian Reschke [mailto:julian.reschke@gmx.de] 
Sent: Monday, August 04, 2008 10:44 AM
To: John Barone
Cc: w3c-dist-auth@w3.org
Subject: Re: getting WebDAV SEARCH ready for the IESG

John Barone wrote:
> Another comment on this; there doesn't seem to be any discussion about

> issuing a SEARCH and limiting on multi-valued properties, in the
WHERE.
> Is this beyond the scope of this particular draft, or is this treated 
> in some other specification/draft?
> 
> Regards,
> 
> -John

Short answer: out of scope.

Long answer: this requires a common understanding of what multivalued
properties are, and how they are serialized.

A proposal was contained in a draft of what later was published as RFC
4316, see
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-property-datatype
s-06.html#rfc.section.A>. 
Back when we discussed this, there was a preference of keeping things
simple, and so it was removed from subsequent drafts.

That being said, I know that the proposal was implemented both by SAP
and Xythos (although likely in different namespaces). I would be happy
to resurrect that part of the spec as a separate activity, but today I
wouldn't be able to update the SAP implementation anymore.

BR, Julian





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First and foremost I would be in favor of wording that is consistent
with what's outlined in section 2.3.1, for truncation.  From a client
perspective, I would think that the MUST wording in section 5.17.1 is
most desirable.  However, from a practical (and admittedly self-serving)
point of view, simply stating that the results MUST ordered as the
client directed, would be preferred.  Section 2.3.1 goes on to say:

"... the partial results returned MAY be any subset of the result set
that would have satisfied the original query".

Perhaps in section 5.17.1 the additional sentence could be phrased:

"... the results that are included in the response document SHOULD be
those that order highest"


Regards,

-John

-----Original Message-----
From: Julian Reschke [mailto:julian.reschke@gmx.de] 
Sent: Monday, August 04, 2008 10:39 AM
To: John Barone
Cc: w3c-dist-auth@w3.org; www-webdav-dasl@w3.org
Subject: Re: getting WebDAV SEARCH ready for the IESG

John Barone wrote:
> The Xythos server currently doesn't implement the limit feature.  The 
> server does truncate results based on a server setting.  Making sure 
> the truncated results are globally ordered is difficult, for the 
> reasons you outlined and particularly when the search spans multiple
data stores.

...another good point I forgot.

> Implementing the limit feature would pose the same ordering
challenges.
> I think making 5.17.1 a MUST places a heavy burden on the server 
> implementation.

One alternative would be "SHOULD", another one would be just stating
that DAV:limit is optional, and servers that can't do the MUST level
requirement should reject the query.

Any preference?

BR, Julian



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John Barone wrote:
> First and foremost I would be in favor of wording that is consistent
> with what's outlined in section 2.3.1, for truncation.  From a client
> perspective, I would think that the MUST wording in section 5.17.1 is
> most desirable.  However, from a practical (and admittedly self-serving)
> point of view, simply stating that the results MUST ordered as the
> client directed, would be preferred.  Section 2.3.1 goes on to say:
> 
> "... the partial results returned MAY be any subset of the result set
> that would have satisfied the original query".
> 
> Perhaps in section 5.17.1 the additional sentence could be phrased:
> 
> "... the results that are included in the response document SHOULD be
> those that order highest"

So, to be precise, the single change you're proposing is to relax the 
"must" to a "should"?

I'd be ok with that.

BR, Julian





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Yes, that would be fine.

I wasn't privy to the original discussion that resulted in the MUST.
So, I don't know if there are some client requirements/concerns that
would be stepped on by changing it to a SHOULD.

Regards,

-John 

-----Original Message-----
From: Julian Reschke [mailto:julian.reschke@gmx.de] 
Sent: Monday, August 04, 2008 11:35 AM
To: John Barone
Cc: w3c-dist-auth@w3.org; www-webdav-dasl@w3.org
Subject: Re: getting WebDAV SEARCH ready for the IESG

John Barone wrote:
> First and foremost I would be in favor of wording that is consistent 
> with what's outlined in section 2.3.1, for truncation.  From a client 
> perspective, I would think that the MUST wording in section 5.17.1 is 
> most desirable.  However, from a practical (and admittedly 
> self-serving) point of view, simply stating that the results MUST 
> ordered as the client directed, would be preferred.  Section 2.3.1
goes on to say:
> 
> "... the partial results returned MAY be any subset of the result set 
> that would have satisfied the original query".
> 
> Perhaps in section 5.17.1 the additional sentence could be phrased:
> 
> "... the results that are included in the response document SHOULD be 
> those that order highest"

So, to be precise, the single change you're proposing is to relax the
"must" to a "should"?

I'd be ok with that.

BR, Julian





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John Barone wrote:
> Yes, that would be fine.
> 
> I wasn't privy to the original discussion that resulted in the MUST.
> So, I don't know if there are some client requirements/concerns that
> would be stepped on by changing it to a SHOULD.
> ...

I would assume that any query that DAV:limits itself, or results in 
server-enforced truncation, is unlikely to be useful in a programmatic 
client. So I wouldn't expect this to be a problem.

BR, Julian



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Hello,

I'm currently working on a WebDAV Server implementation in php.
But i'm unsure about the correct behavior of MOVE and COPY with  
Overwrite true and Depth infinity of a collection to a destination  
that already exists.
What will be the correct behavior if there is a collection or resource  
inside the destination collection that can't be deleted cause of a  
lock or missing permissions.
Will the complete MOVE or COPY fail cause the DELETE on the  
destination failed ?
And if the MOVE or COPY fails should the same Multistatus header a  
DELETE with "Depth: infinity" on this collection would return, be  
returned ?

Regards,
Till Niese




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Till Niese wrote:
> 
> Hello,
> 
> I'm currently working on a WebDAV Server implementation in php.
> But i'm unsure about the correct behavior of MOVE and COPY with 
> Overwrite true and Depth infinity of a collection to a destination that 
> already exists.
> What will be the correct behavior if there is a collection or resource 
> inside the destination collection that can't be deleted cause of a lock 
> or missing permissions.
> Will the complete MOVE or COPY fail cause the DELETE on the destination 
> failed ?

It depends on the implementation. WebDAV only requires best effort.

> And if the MOVE or COPY fails should the same Multistatus header a 
> DELETE with "Depth: infinity" on this collection would return, be 
> returned ?

That's the case shown in 
<http://greenbytes.de/tech/webdav/rfc4918.html#rfc.section.9.8.8>, isn't it?

BR, Julian



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Hi,

I wonder if the BIND spec could include an informal discussion about
the relationship with RFC 3253. There are two cases I see at the moment
that are worth mentioning.

1) When supporting version controlled collections, bindings may be
  introduced in a server without actually issuing the BIND method.
  When a MOVE is performed of a resource from one collection to
  another, both collections should be checked out. An additional binding
  would be the result if one collection would be subsequently checked =20=

in,
  while the check-out of the other is undone. The resulting situation
  is meaningless if the binding model is not supported.

2) RFC 3253 proposes the version-history feature. It can provide access
  to the version history of a resource, "even after all version-=20
controlled
  resources for that version history have been deleted". In terms of the
  binding model this means "when all bindings to it in any collection
  version have been deleted". RFC 3253 doesn't propose a way to =20
reinstate
  a version history in the URI namespace of a server. With the BIND =20
method
  there is a possibility by using a resource-id as the value of the href
  element. In practice, this is a way for an end-user to recover an
  accidentally deleted version-controlled resource.

Best regards,

Werner.
--
Werner Donn=E9  --  Re                                     =
http://www.pincette.biz
Engelbeekstraat 8                                               =
http://www.re.be
BE-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne@re.be








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From: Cyrus Daboo <cyrus@daboo.name>
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Hi,
Is it too late to consider adding a "startswith" comparison operation to 
the basicsearch grammar in the SEARCH extension? I think that is a key 
string match operation to have in addition to "contains".

-- 
Cyrus Daboo




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Cyrus Daboo wrote:
> 
> Hi,
> Is it too late to consider adding a "startswith" comparison operation to 
> the basicsearch grammar in the SEARCH extension? I think that is a key 
> string match operation to have in addition to "contains".

Hi Cyrus,

are we talking about properties, or about content?

For properties, you can use DAV:like, with something like "prefix%" (see 
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-17.html#rfc.section.5.15>).

BR, Julian



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Hi Julian,

--On August 11, 2008 5:00:33 PM +0200 Julian Reschke 
<julian.reschke@gmx.de> wrote:

> are we talking about properties, or about content?
>
> For properties, you can use DAV:like, with something like "prefix%" (see
> <http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-17.html#rfc
> .section.5.15>).

Ah yes. That is probably sufficient for the vast majority of use cases I 
can think of.

-- 
Cyrus Daboo




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+1   would be nice

-John 

-----Original Message-----
From: w3c-dist-auth-request@w3.org [mailto:w3c-dist-auth-request@w3.org]
On Behalf Of Cyrus Daboo
Sent: Monday, August 11, 2008 7:35 AM
To: w3c-dist-auth@w3.org; www-webdav-dasl@w3.org
Subject: "Starts with" comparison in search


Hi,
Is it too late to consider adding a "startswith" comparison operation to
the basicsearch grammar in the SEARCH extension? I think that is a key
string match operation to have in addition to "contains".

--
Cyrus Daboo





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Err... True.  Disregard my +1

-John 

-----Original Message-----
From: w3c-dist-auth-request@w3.org [mailto:w3c-dist-auth-request@w3.org]
On Behalf Of Cyrus Daboo
Sent: Monday, August 11, 2008 8:09 AM
To: Julian Reschke
Cc: w3c-dist-auth@w3.org; www-webdav-dasl@w3.org
Subject: Re: "Starts with" comparison in search


Hi Julian,

--On August 11, 2008 5:00:33 PM +0200 Julian Reschke
<julian.reschke@gmx.de> wrote:

> are we talking about properties, or about content?
>
> For properties, you can use DAV:like, with something like "prefix%" 
> (see 
> <http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-17.html#
> rfc
> .section.5.15>).

Ah yes. That is probably sufficient for the vast majority of use cases I
can think of.

--
Cyrus Daboo





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This is a multipart message in MIME format.
--=_alternative 001C8DE4852574A3_=
Content-Type: text/plain; charset="US-ASCII"

Point 1 is correct. 

But wrt point 2, RFC3243 does provide a way to reinstate a version 
history, by specifying a Version in the body of a VERSION-CONTROL request. 
 Also note that a BIND request would not provide a way to reinstate a 
version history, because reinstating a version history is done by creating 
a new version-controlled resource whose VERSION-HISTORY property 
identifies that version history (and this cannot be done via a BIND 
operation).

Cheers,
Geoff

Werner wrote on 08/11/2008 08:00:47 AM:
> 
> Hi,
> 
> I wonder if the BIND spec could include an informal discussion about
> the relationship with RFC 3253. There are two cases I see at the moment
> that are worth mentioning.
> 
> 1) When supporting version controlled collections, bindings may be
>   introduced in a server without actually issuing the BIND method.
>   When a MOVE is performed of a resource from one collection to
>   another, both collections should be checked out. An additional binding
>   would be the result if one collection would be subsequently checked 
> in,
>   while the check-out of the other is undone. The resulting situation
>   is meaningless if the binding model is not supported.
> 
> 2) RFC 3253 proposes the version-history feature. It can provide access
>   to the version history of a resource, "even after all version- 
> controlled
>   resources for that version history have been deleted". In terms of the
>   binding model this means "when all bindings to it in any collection
>   version have been deleted". RFC 3253 doesn't propose a way to 
> reinstate
>   a version history in the URI namespace of a server. With the BIND 
> method
>   there is a possibility by using a resource-id as the value of the href
>   element. In practice, this is a way for an end-user to recover an
>   accidentally deleted version-controlled resource.

--=_alternative 001C8DE4852574A3_=
Content-Type: text/html; charset="US-ASCII"


<br><tt><font size=2>Point 1 is correct. &nbsp;</font></tt>
<br>
<br><tt><font size=2>But wrt point 2, RFC3243 does provide a way to reinstate
a version history, by specifying a Version in the body of a VERSION-CONTROL
request. &nbsp;Also note that a BIND request would not provide a way to
reinstate a version history, because reinstating a version history is done
by creating a new version-controlled resource whose VERSION-HISTORY property
identifies that version history (and this cannot be done via a BIND operation).</font></tt>
<br>
<br><tt><font size=2>Cheers,</font></tt>
<br><tt><font size=2>Geoff</font></tt>
<br>
<br><tt><font size=2>Werner wrote on 08/11/2008 08:00:47 AM:<br>
&gt; <br>
&gt; Hi,<br>
&gt; <br>
&gt; I wonder if the BIND spec could include an informal discussion about<br>
&gt; the relationship with RFC 3253. There are two cases I see at the moment<br>
&gt; that are worth mentioning.<br>
&gt; <br>
&gt; 1) When supporting version controlled collections, bindings may be<br>
&gt; &nbsp; introduced in a server without actually issuing the BIND method.<br>
&gt; &nbsp; When a MOVE is performed of a resource from one collection
to<br>
&gt; &nbsp; another, both collections should be checked out. An additional
binding<br>
&gt; &nbsp; would be the result if one collection would be subsequently
checked &nbsp;<br>
&gt; in,<br>
&gt; &nbsp; while the check-out of the other is undone. The resulting situation<br>
&gt; &nbsp; is meaningless if the binding model is not supported.<br>
&gt; <br>
&gt; 2) RFC 3253 proposes the version-history feature. It can provide access<br>
&gt; &nbsp; to the version history of a resource, &quot;even after all
version- <br>
&gt; controlled<br>
&gt; &nbsp; resources for that version history have been deleted&quot;.
In terms of the<br>
&gt; &nbsp; binding model this means &quot;when all bindings to it in any
collection<br>
&gt; &nbsp; version have been deleted&quot;. RFC 3253 doesn't propose a
way to &nbsp;<br>
&gt; reinstate<br>
&gt; &nbsp; a version history in the URI namespace of a server. With the
BIND &nbsp;<br>
&gt; method<br>
&gt; &nbsp; there is a possibility by using a resource-id as the value
of the href<br>
&gt; &nbsp; element. In practice, this is a way for an end-user to recover
an<br>
&gt; &nbsp; accidentally deleted version-controlled resource.<br>
</font></tt>
--=_alternative 001C8DE4852574A3_=--



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Subject: WebDAV SEARCH Last Call over
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Hi,

the IETF Last Call for WebDAV SEARCH ended yesterday, and the following 
points were raised:

1) some editorial nits ("SHOULD not" instead of "SHOULD NOT", an XML 
namespace using a domain name not reserved for examples)

2) missing statement about safeness of SEARCH method

3) John Barone's proposal to relax the server requirement for sorting 
truncated results (see thread starting at 
<http://lists.w3.org/Archives/Public/w3c-dist-auth/2008JulSep/0016.html>).

I have fixed 1) and 2) in my "latest" version; here are the diffs:

-- snip --

Section 2.2., paragraph 0:
OLD:

  2.2.  The Request

NEW:

     SEARCH is a safe method; it does not have any significance other than
     executing a query and returning a query result (see [RFC2616],
     Section 9.1.1).

  2.2.  The Request


Section 5.19.9., paragraph 1:
OLD:

     <D:basicsearchschema xmlns:D="DAV:"
       xmlns:xs="http://www.w3.org/2001/XMLSchema">
       <D:properties>
         <D:propdesc>
           <D:prop><D:getcontentlength/></D:prop>
           <D:datatype><xs:nonNegativeInteger/></D:datatype>
           <D:searchable/><D:selectable/><D:sortable/>
         </D:propdesc>
         <D:propdesc>
           <D:prop><D:getcontenttype/><D:displayname/></D:prop>
           <D:searchable/><D:selectable/><D:sortable/>
         </D:propdesc>
         <D:propdesc>
           <D:prop><fstop xmlns="http://jennicam.org"/></D:prop>
           <D:selectable/>
         </D:propdesc>
         <D:propdesc>
           <D:any-other-property/>
           <D:searchable/><D:selectable/>
         </D:propdesc>
       </D:properties>
       <D:operators>
         <D:opdesc>
           <D:like/><D:operand-property/><D:operand-literal/>
         </D:opdesc>
         <D:opdesc allow-pcdata="yes">
           <D:contains/>
         </D:opdesc>
       </D:operators>
     </D:basicsearchschema>

NEW:

     <D:basicsearchschema xmlns:D="DAV:"
       xmlns:xs="http://www.w3.org/2001/XMLSchema">
       <D:properties>
         <D:propdesc>
           <D:prop><D:getcontentlength/></D:prop>
           <D:datatype><xs:nonNegativeInteger/></D:datatype>
           <D:searchable/><D:selectable/><D:sortable/>
         </D:propdesc>
         <D:propdesc>
           <D:prop><D:getcontenttype/><D:displayname/></D:prop>
           <D:searchable/><D:selectable/><D:sortable/>
         </D:propdesc>
         <D:propdesc>
           <D:prop><fstop xmlns="http://ns.example.org"/></D:prop>
           <D:selectable/>
         </D:propdesc>
         <D:propdesc>
           <D:any-other-property/>
           <D:searchable/><D:selectable/>
         </D:propdesc>
       </D:properties>
       <D:operators>
         <D:opdesc>
           <D:like/><D:operand-property/><D:operand-literal/>
         </D:opdesc>
         <D:opdesc allow-pcdata="yes">
           <D:contains/>
         </D:opdesc>
       </D:operators>
     </D:basicsearchschema>


Section 8., paragraph 1:
OLD:

     Query grammars are identified by URIs.  Applications SHOULD not
     attempt to retrieve these URIs even if they appear to be retrievable
     (for example, those that begin with "http://")

NEW:

     Query grammars are identified by URIs.  Applications SHOULD NOT
     attempt to retrieve these URIs even if they appear to be retrievable
     (for example, those that begin with "http://")


-- snip --

...see also 
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html> 
and 
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest-from-previous.diff.html>.

With respect to point 3, I'm willing to follow John's proposal to relax 
the MUST to a SHOULD. Feedback on this one appreciated, in particular if 
somebody feels strongly about it and doesn't want it to be changed.

BR, Julian






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Geoffrey M Clemm wrote:
> 
> Point 1 is correct.  

Indeed.

I think Werner is right in that many do not understand the relation 
between BIND and DeltaV, and thus it would be useful to state it.

We already have a "Relationship to WebDAV Access Control Protocol" 
(<http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.html#rfc.section.9>), 
so my proposal would be to make that a generic "Relationship to other 
WebDAV Specifications", and having one subsection for ACL and DeltaV each.

The DeltaV part could read (this is mainly Werner's text):

"When supporting version controlled collections, bindings may be 
introduced in a server without actually issuing the BIND method. For 
instance, when a MOVE is performed of a resource from one 
version-controlled collection to another, both collections should be 
checked out. An additional binding would be the result if the target 
collection would be subsequently checked in, while the check-out of the 
source collection is undone. The resulting situation is meaningless if 
the binding model is not supported."

Note: I changed 2nd last sentence to state which collection is being 
checked-in (the target) and which would be reverted (the source).

So, if we have /target, /source and /source/test, all of which 
version-controlled, and do:

(1)

   CHECKOUT /source/ HTTP/1.1

(2)

   CHECKOUT /target/ HTTP/1.1

(3)

   MOVE /source/test HTTP/1.1
   Destination: /target/test

(4)

   CHECKIN /target/ HTTP/1.1

(5)

   UNCHECKOUT /source/ HTTP/1.1

we would end up with /source/test and /target/test being bindings to the 
same resource.

If we did

(4b)

   UNCHECKOUT /source/ HTTP/1.1

(5b)

   CHECKIN /target/ HTTP/1.1

We would end up with zero bindings, so the resource would be gone (also 
interesting, but...)

So, call for consensus:

a) Add that section?

b) Is the proposed text and scenario accurate?

c) Include the expanded example with message exchanges?

BR, Julian




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Julian Reschke wrote:
> 
> Geoffrey M Clemm wrote:
>>
>> Point 1 is correct.  
> 
> Indeed.
> 
> I think Werner is right in that many do not understand the relation 
> between BIND and DeltaV, and thus it would be useful to state it.
> 
> We already have a "Relationship to WebDAV Access Control Protocol" 
> (<http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.html#rfc.section.9>), 
> so my proposal would be to make that a generic "Relationship to other 
> WebDAV Specifications", and having one subsection for ACL and DeltaV each.
> 
> The DeltaV part could read (this is mainly Werner's text):
> 
> "When supporting version controlled collections, bindings may be 
> introduced in a server without actually issuing the BIND method. For 
> instance, when a MOVE is performed of a resource from one 
> version-controlled collection to another, both collections should be 
> checked out. An additional binding would be the result if the target 
> collection would be subsequently checked in, while the check-out of the 
> source collection is undone. The resulting situation is meaningless if 
> the binding model is not supported."
> ...

Hm.

It just occurred to me that a server that implements MOVE as a sequence 
of COPY and DELETE would expose a different behavior -- checking in the 
destination collection but reverting the source collection would turn 
the operation into the equivalent of a COPY, not a BIND...

BR, Julian



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This is a multipart message in MIME format.
--=_alternative 0064E032852574A7_=
Content-Type: text/plain; charset="US-ASCII"

The "Hm" note is correct.  A MOVE will create an additional binding if the 
MOVE has REBIND semantics, but not if the MOVE has COPY/DELETE semantics.

Cheers,
Geoff

Julian Reschke <julian.reschke@gmx.de> wrote on 08/16/2008 06:31:45 AM:

> Julian Reschke wrote:
> > 
> > Geoffrey M Clemm wrote:
> >>
> >> Point 1 is correct. 
> > 
> > Indeed.
> > 
> > I think Werner is right in that many do not understand the relation 
> > between BIND and DeltaV, and thus it would be useful to state it.
> > 
> > We already have a "Relationship to WebDAV Access Control Protocol" 
> > (<http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.
> html#rfc.section.9>), 
> > so my proposal would be to make that a generic "Relationship to other 
> > WebDAV Specifications", and having one subsection for ACL and DeltaV 
each.
> > 
> > The DeltaV part could read (this is mainly Werner's text):
> > 
> > "When supporting version controlled collections, bindings may be 
> > introduced in a server without actually issuing the BIND method. For 
> > instance, when a MOVE is performed of a resource from one 
> > version-controlled collection to another, both collections should be 
> > checked out. An additional binding would be the result if the target 
> > collection would be subsequently checked in, while the check-out of 
the 
> > source collection is undone. The resulting situation is meaningless if 

> > the binding model is not supported."
> > ...
> 
> Hm.
> 
> It just occurred to me that a server that implements MOVE as a sequence 
> of COPY and DELETE would expose a different behavior -- checking in the 
> destination collection but reverting the source collection would turn 
> the operation into the equivalent of a COPY, not a BIND...
> 
> BR, Julian

--=_alternative 0064E032852574A7_=
Content-Type: text/html; charset="US-ASCII"


<br><tt><font size=2>The &quot;Hm&quot; note is correct. &nbsp;A MOVE will
create an additional binding if the MOVE has REBIND semantics, but not
if the MOVE has COPY/DELETE semantics.</font></tt>
<br>
<br><tt><font size=2>Cheers,</font></tt>
<br><tt><font size=2>Geoff</font></tt>
<br>
<br><tt><font size=2>Julian Reschke &lt;julian.reschke@gmx.de&gt; wrote
on 08/16/2008 06:31:45 AM:<br>
<br>
&gt; Julian Reschke wrote:<br>
&gt; &gt; <br>
&gt; &gt; Geoffrey M Clemm wrote:<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; Point 1 is correct. &nbsp;<br>
&gt; &gt; <br>
&gt; &gt; Indeed.<br>
&gt; &gt; <br>
&gt; &gt; I think Werner is right in that many do not understand the relation
<br>
&gt; &gt; between BIND and DeltaV, and thus it would be useful to state
it.<br>
&gt; &gt; <br>
&gt; &gt; We already have a &quot;Relationship to WebDAV Access Control
Protocol&quot; <br>
&gt; &gt; (&lt;http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.<br>
&gt; html#rfc.section.9&gt;), <br>
&gt; &gt; so my proposal would be to make that a generic &quot;Relationship
to other <br>
&gt; &gt; WebDAV Specifications&quot;, and having one subsection for ACL
and DeltaV each.<br>
&gt; &gt; <br>
&gt; &gt; The DeltaV part could read (this is mainly Werner's text):<br>
&gt; &gt; <br>
&gt; &gt; &quot;When supporting version controlled collections, bindings
may be <br>
&gt; &gt; introduced in a server without actually issuing the BIND method.
For <br>
&gt; &gt; instance, when a MOVE is performed of a resource from one <br>
&gt; &gt; version-controlled collection to another, both collections should
be <br>
&gt; &gt; checked out. An additional binding would be the result if the
target <br>
&gt; &gt; collection would be subsequently checked in, while the check-out
of the <br>
&gt; &gt; source collection is undone. The resulting situation is meaningless
if <br>
&gt; &gt; the binding model is not supported.&quot;<br>
&gt; &gt; ...<br>
&gt; <br>
&gt; Hm.<br>
&gt; <br>
&gt; It just occurred to me that a server that implements MOVE as a sequence
<br>
&gt; of COPY and DELETE would expose a different behavior -- checking in
the <br>
&gt; destination collection but reverting the source collection would turn
<br>
&gt; the operation into the equivalent of a COPY, not a BIND...<br>
&gt; <br>
&gt; BR, Julian<br>
</font></tt>
--=_alternative 0064E032852574A7_=--



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Julian Reschke wrote:
> ...
> With respect to point 3, I'm willing to follow John's proposal to relax 
> the MUST to a SHOULD. Feedback on this one appreciated, in particular if 
> somebody feels strongly about it and doesn't want it to be changed.
> ...

For now I have changed the text to say "SHOULD", see 
<http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html#rfc.section.5.17.1>.

In absence of other feedback I'll submit this one as draft 18 sometime 
next week.

Best regards, Julian



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Bigfoot found, shot down in cold blood<BR><BR>A hunter claims that he =
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Ethics Committee Makes Ten Commandments Rules Change - Stealing Is Now=20
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> But wrt point 2, RFC3243 does provide a way to reinstate a version =20
> history, by specifying a Version in the body of a VERSION-CONTROL =20
> request.  Also note that a BIND request would not provide a way to =20
> reinstate a version history, because reinstating a version history =20
> is done by creating a new version-controlled resource whose VERSION-=20=

> HISTORY property identifies that version history (and this cannot be =20=

> done via a BIND operation).

In RFC 3253 I find in section 14.8 that you can indeed reinstate the =20
version
history of a collection in this way, but I can't find anything like =20
that for
resources that are not collections.

I see no evidence for the statement that a new version-controlled =20
resource
should be created for reinstating a version history. This seems to be =20=

what
happens when the VERSION-CONTROL method is used, but that is not the =20
same
thing.

The usage of BIND I propose is semantically equivalent to an addition to
the version-controlled-binding-set property of the parent collection =20
of the
request URI.

Werner.
--
Werner Donn=E9  --  Re                                     =
http://www.pincette.biz
Engelbeekstraat 8                                               =
http://www.re.be
BE-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne@re.be








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This is a multipart message in MIME format.
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The semantics that let you use VERSION-CONTROL to "restore" any resource=20
from its version-history are defined in section 6.7.
Section 14.8 is just the extended semantics of VERSION-CONTROL when=20
restoring version-controlled-collections.

You cannot use BIND to "restore" a version history, because the child of a =

version-controlled-folder is a version-controlled-resource, not a=20
version-history, whereas BIND is defined to make the specified resource a=20
child of the specified collection.

Cheers,
Geoff




Werner Donn=E9 <werner.donne@re.be> wrote on 08/19/2008 04:23:18 AM:

>=20
> > But wrt point 2, RFC3243 does provide a way to reinstate a version=20
> > history, by specifying a Version in the body of a VERSION-CONTROL=20
> > request.  Also note that a BIND request would not provide a way to=20
> > reinstate a version history, because reinstating a version history=20
> > is done by creating a new version-controlled resource whose VERSION-=20
> > HISTORY property identifies that version history (and this cannot be=20
> > done via a BIND operation).
>=20
> In RFC 3253 I find in section 14.8 that you can indeed reinstate the=20
> version
> history of a collection in this way, but I can't find anything like=20
> that for
> resources that are not collections.
>=20
> I see no evidence for the statement that a new version-controlled=20
> resource
> should be created for reinstating a version history. This seems to be=20
> what
> happens when the VERSION-CONTROL method is used, but that is not the=20
> same
> thing.
>=20
> The usage of BIND I propose is semantically equivalent to an addition to
> the version-controlled-binding-set property of the parent collection=20
> of the
> request URI.
>=20
> Werner.
> --
> Werner Donn=E9  --  Re                                     http://www.
> pincette.biz
> Engelbeekstraat 8=20
> http://www.re.be
> BE-3300 Tienen
> tel: (+32) 486 425803   e-mail: werner.donne@re.be
>=20
>=20
>=20
>=20
>=20

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<br><tt><font size=3D2>The semantics that let you use VERSION-CONTROL to
&quot;restore&quot; any resource from its version-history are defined in
section 6.7.</font></tt>
<br><tt><font size=3D2>Section 14.8 is just the extended semantics of VERSI=
ON-CONTROL
when restoring version-controlled-collections.</font></tt>
<br>
<br><tt><font size=3D2>You cannot use BIND to &quot;restore&quot; a version
history, because the child of a version-controlled-folder is a version-cont=
rolled-resource,
not a version-history, whereas BIND is defined to make the specified resour=
ce
a child of the specified collection.</font></tt>
<br>
<br><tt><font size=3D2>Cheers,</font></tt>
<br><tt><font size=3D2>Geoff</font></tt>
<br>
<br>
<br>
<br>
<br><tt><font size=3D2>Werner Donn=E9 &lt;werner.donne@re.be&gt; wrote on 0=
8/19/2008
04:23:18 AM:<br>
<br>
&gt; <br>
&gt; &gt; But wrt point 2, RFC3243 does provide a way to reinstate a version
&nbsp;<br>
&gt; &gt; history, by specifying a Version in the body of a VERSION-CONTROL
&nbsp;<br>
&gt; &gt; request. &nbsp;Also note that a BIND request would not provide
a way to &nbsp;<br>
&gt; &gt; reinstate a version history, because reinstating a version history
&nbsp;<br>
&gt; &gt; is done by creating a new version-controlled resource whose VERSI=
ON-
<br>
&gt; &gt; HISTORY property identifies that version history (and this cannot
be &nbsp;<br>
&gt; &gt; done via a BIND operation).<br>
&gt; <br>
&gt; In RFC 3253 I find in section 14.8 that you can indeed reinstate the
&nbsp;<br>
&gt; version<br>
&gt; history of a collection in this way, but I can't find anything like
&nbsp;<br>
&gt; that for<br>
&gt; resources that are not collections.<br>
&gt; <br>
&gt; I see no evidence for the statement that a new version-controlled
&nbsp;<br>
&gt; resource<br>
&gt; should be created for reinstating a version history. This seems to
be &nbsp;<br>
&gt; what<br>
&gt; happens when the VERSION-CONTROL method is used, but that is not the
&nbsp;<br>
&gt; same<br>
&gt; thing.<br>
&gt; <br>
&gt; The usage of BIND I propose is semantically equivalent to an addition
to<br>
&gt; the version-controlled-binding-set property of the parent collection
&nbsp;<br>
&gt; of the<br>
&gt; request URI.<br>
&gt; <br>
&gt; Werner.<br>
&gt; --<br>
&gt; Werner Donn=E9 &nbsp;-- &nbsp;Re &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; http://www.<br>
&gt; pincette.biz<br>
&gt; Engelbeekstraat 8 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br>
&gt; http://www.re.be<br>
&gt; BE-3300 Tienen<br>
&gt; tel: (+32) 486 425803 &nbsp; e-mail: werner.donne@re.be<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; <br>
</font></tt>
--=_alternative 0047D6C7852574AA_=--



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> The semantics that let you use VERSION-CONTROL to "restore" any =20
> resource from its version-history are defined in section 6.7.

This is part of the workspace feature, which is optional. Shouldn't =20
this be
part of the general VERSION-CONTROL semantics? I don't think you need =20=

the
workspace feature for this behaviour.

>
> Section 14.8 is just the extended semantics of VERSION-CONTROL when =20=

> restoring version-controlled-collections.
>
> You cannot use BIND to "restore" a version history, because the =20
> child of a version-controlled-folder is a version-controlled-=20
> resource, not a version-history, whereas BIND is defined to make the =20=

> specified resource a child of the specified collection.
>

I have not suggested that the version history become the child of a
version-controlled folder. The request URI of the BIND would be the =20
child
and from the resource-id the version history would be inferred.

> Cheers,
> Geoff
>

Werner.

>
>
>
> Werner Donn=E9 <werner.donne@re.be> wrote on 08/19/2008 04:23:18 AM:
>
> >
> > > But wrt point 2, RFC3243 does provide a way to reinstate a version
> > > history, by specifying a Version in the body of a VERSION-CONTROL
> > > request.  Also note that a BIND request would not provide a way to
> > > reinstate a version history, because reinstating a version history
> > > is done by creating a new version-controlled resource whose =20
> VERSION-
> > > HISTORY property identifies that version history (and this =20
> cannot be
> > > done via a BIND operation).
> >
> > In RFC 3253 I find in section 14.8 that you can indeed reinstate the
> > version
> > history of a collection in this way, but I can't find anything like
> > that for
> > resources that are not collections.
> >
> > I see no evidence for the statement that a new version-controlled
> > resource
> > should be created for reinstating a version history. This seems to =20=

> be
> > what
> > happens when the VERSION-CONTROL method is used, but that is not the
> > same
> > thing.
> >
> > The usage of BIND I propose is semantically equivalent to an =20
> addition to
> > the version-controlled-binding-set property of the parent collection
> > of the
> > request URI.
> >
> > Werner.
> > --
> > Werner Donn=E9  --  Re                                     =
http://www.
> > pincette.biz
> > Engelbeekstraat 8
> > http://www.re.be
> > BE-3300 Tienen
> > tel: (+32) 486 425803   e-mail: werner.donne@re.be
> >
> >
> >
> >
> >

--
Werner Donn=E9  --  Re                                     =
http://www.pincette.biz
Engelbeekstraat 8                                               =
http://www.re.be
BE-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne@re.be








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Werner Donn=E9 <werner.donne@re.be> wrote on 08/19/2008 09:17:09 AM:

> > The semantics that let you use VERSION-CONTROL to "restore" any
> > resource from its version-history are defined in section 6.7.
>
> This is part of the workspace feature, which is optional. Shouldn't
> this be
> part of the general VERSION-CONTROL semantics? I don't think you need=

> the workspace feature for this behaviour.

The partitioning of functions into a few "features" always has arbitrar=
y
aspects, so the current spec just captured the rough consensus of the
design group.  A particular server is always free to implement parts of=
 a
feature if the functionality it wants to provide does not allign exactl=
y
with the feature partitioning of the spec.  We can define new "feature
groupings", but we should not define alternative syntax/mechanisms for
functions that are already defined in the specification.

> > Section 14.8 is just the extended semantics of VERSION-CONTROL when=

> > restoring version-controlled-collections.
> >
> > You cannot use BIND to "restore" a version history, because the
> > child of a version-controlled-folder is a version-controlled-
> > resource, not a version-history, whereas BIND is defined to make th=
e
> > specified resource a child of the specified collection.
> >
>
> I have not suggested that the version history become the child of a
> version-controlled folder. The request URI of the BIND would be the
> child
> and from the resource-id the version history would be inferred.

I don't believe that is compatible with the current semantics defined f=
or
BIND (I'd need to see an example of what you have in mind to comment mo=
re
precisely).  But more importantly, since that functionality is already
provided by RFC-3253 with the VERSION-CONTROL method, there's no reason=
 to
provide an alternative mechanism via the BIND method.

Cheers,
Geoff

=





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Hey guys,

I sent these emails to the litmus mailing list, but they never seem to  
arrive.. I'm hoping this list is an appropriate place to ask these  
litmus related questions:

First problem is with property test #13:

13. propreplace........... FAIL (PROPPATCH on `/litmus/prop2': http://hidden/litmus/prop2 
: 404 Not Found http://hidden/litmus/prop2: 404 Not Found http://hidden/litmus/prop2 
: 404 Not Foundhttp://hidden/litmus/prop2: 404 Not Found http://hidden/litmus/prop2 
: 404 Not Found )

As far as I can tell, the last mutation on /litmus/prop2 happened in  
Test 11 (propdeletes), which brings the list of properties to this  
state:

prop1 (deleted)
prop2 (deleted)
prop3 (deleted)
prop4 (deleted)
prop5 value5
prop6 value6
prop7 value7
prop8 value8
prop9 value9

Test 12 (propget), returns this :

<?xml version="1.0" encoding="UTF-8"?>
<d:multistatus xmlns:d="DAV:">
<d:response>
<d:href>/litmus/prop2</d:href>
<d:propstat>
<d:prop>
<prop5 xmlns="http://webdav.org/neon/litmus/">value5</prop5>
<prop6 xmlns="http://webdav.org/neon/litmus/">value6</prop6>
<prop7 xmlns="http://webdav.org/neon/litmus/">value7</prop7>
<prop8 xmlns="http://webdav.org/neon/litmus/">value8</prop8>
<prop9 xmlns="http://webdav.org/neon/litmus/">value9</prop9>
</d:prop>
<d:status>HTTP/1.1 200 Ok</d:status>
</d:propstat>
<d:propstat>
<d:prop>
<prop0 xmlns="http://webdav.org/neon/litmus/"/>
<prop1 xmlns="http://webdav.org/neon/litmus/"/>
<prop2 xmlns="http://webdav.org/neon/litmus/"/>
<prop3 xmlns="http://webdav.org/neon/litmus/"/>
<prop4 xmlns="http://webdav.org/neon/litmus/"/>
</d:prop>
<d:status>HTTP/1.1 404 Not Found</d:status>
</d:propstat>
</d:response>
</d:multistatus>

(Expected result, and this is also a 'pass')

Then test 13 starts, which requests:

5178 <D:propertyupdate xmlns:D="DAV:"><D:remove><D:prop><prop0 xmlns="http://webdav.org/neon/litmus/ 
"></prop0></D:prop></D:remove>
5179 <D:remove><D:prop><prop1 xmlns="http://webdav.org/neon/litmus/"></ 
prop1></D:prop></D:remove>
5180 <D:remove><D:prop><prop2 xmlns="http://webdav.org/neon/litmus/"></ 
prop2></D:prop></D:remove>
5181 <D:remove><D:prop><prop3 xmlns="http://webdav.org/neon/litmus/"></ 
prop3></D:prop></D:remove>
5182 <D:remove><D:prop><prop4 xmlns="http://webdav.org/neon/litmus/"></ 
prop4></D:prop></D:remove>
5183 <D:set><D:prop><prop5 xmlns="http://webdav.org/neon/ 
litmus/">newvalue5</prop5></D:prop></D:set>
5184 <D:set><D:prop><prop6 xmlns="http://webdav.org/neon/ 
litmus/">newvalue6</prop6></D:prop></D:set>
5185 <D:set><D:prop><prop7 xmlns="http://webdav.org/neon/ 
litmus/">newvalue7</prop7></D:prop></D:set>
5186 <D:set><D:prop><prop8 xmlns="http://webdav.org/neon/ 
litmus/">newvalue8</prop8></D:prop></D:set>
5187 <D:set><D:prop><prop9 xmlns="http://webdav.org/neon/ 
litmus/">newvalue9</prop9></D:prop></D:set>
5188 </D:propertyupdate>

This was the first oddnesss, since it actually requests to delete the  
already deleted properties at first. According to spec.. I return the  
appropriate 404's and 200's:

5204 Read block (1793 bytes):
5205 [<?xml version="1.0" encoding="UTF-8"?>
5206 <d:multistatus xmlns:d="DAV:">
5207  <d:response>
5208   <d:href>litmus/prop2</d:href>
5209   <d:propstat>
5210    <d:prop>
5211     <X:prop0 xmlns:X="http://webdav.org/neon/litmus/"></X:prop0>
5212    </d:prop>
5213    <d:status>HTTP/1.1 404 Not Found</d:status>
5214   </d:propstat>
5215   <d:propstat>
5216    <d:prop>
5217     <X:prop1 xmlns:X="http://webdav.org/neon/litmus/"></X:prop1>
5218    </d:prop>
5219    <d:status>HTTP/1.1 404 Not Found</d:status>
5220   </d:propstat>
5221   <d:propstat>
5222    <d:prop>
5223     <X:prop2 xmlns:X="http://webdav.org/neon/litmus/"></X:prop2>
5224    </d:prop>
5225    <d:status>HTTP/1.1 404 Not Found</d:status>
5226   </d:propstat>
5227   <d:propstat>
5228    <d:prop>
5229     <X:prop3 xmlns:X="http://webdav.org/neon/litmus/"></X:prop3>
5230    </d:prop>
5231    <d:status>HTTP/1.1 404 Not Found</d:status>
5232   </d:propstat>
5233   <d:propstat>
5234    <d:prop>
5235     <X:prop4 xmlns:X="http://webdav.org/neon/litmus/"></X:prop4>
5236    </d:prop>
5237    <d:status>HTTP/1.1 404 Not Found</d:status>
5238   </d:propstat>
5239   <d:propstat>
5240    <d:prop>
5241     <X:prop5 xmlns:X="http://webdav.org/neon/litmus/"></X:prop5>
5242    </d:prop>
5243    <d:status>HTTP/1.1 200 Ok</d:status>
5244   </d:propstat>
5245   <d:propstat>
5246    <d:prop>
5247     <X:prop6 xmlns:X="http://webdav.org/neon/litmus/"></X:prop6>
5248    </d:prop>
5249    <d:status>HTTP/1.1 200 Ok</d:status>
5250   </d:propstat>
5251   <d:propstat>
5252    <d:prop>
5253     <X:prop7 xmlns:X="http://webdav.org/neon/litmus/"></X:prop7>
5254    </d:prop>
5255    <d:status>HTTP/1.1 200 Ok</d:status>
5256   </d:propstat>
5257   <d:propstat>
5258    <d:prop>
5259     <X:prop8 xmlns:X="http://webdav.org/neon/litmus/"></X:prop8>
5260    </d:prop>
5261    <d:status>HTTP/1.1 200 Ok</d:status>
5262   </d:propstat>
5263   <d:propstat>
5264    <d:prop>
5265     <X:prop9 xmlns:X="http://webdav.org/neon/litmus/"></X:prop9>
5266    </d:prop>
5267    <d:status>HTTP/1.1 200 Ok</d:status>
5268   </d:propstat>
5269  </d:response>
5270 </d:multistatus>
5271 ]

So, my question.. what am I doing wrong?

Second one, In property test 23, litmus makes the following request:

<?xml version="1.0" encoding="utf-8" ?><propertyupdate  
xmlns='DAV:'><set><prop><t:valnspace xmlns:t='http://webdav.org/neon/litmus/' 
 ><foo xmlns='bar'/></t:valnspace></prop></set></propertyupdate>

The 'bar' namespace is an invalid one, and expat is quickly to respond  
with: xmlns: URI bar is not absolute, so I respond with a 400 Bad  
Request..

This is also a FAIL for litmus, so I'm curious to what _should_ be  
returned in this situation..

Evert



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Evert | Rooftop wrote:
> ...
> This was the first oddnesss, since it actually requests to delete the 
> already deleted properties at first. According to spec.. I return the 
> appropriate 404's and 200's:
> ...

"Specifying the removal of a property that does not exist is not an 
error." -- <http://greenbytes.de/tech/webdav/rfc4918.html#rfc.section.14.23>

> ...
> <?xml version="1.0" encoding="utf-8" ?><propertyupdate 
> xmlns='DAV:'><set><prop><t:valnspace 
> xmlns:t='http://webdav.org/neon/litmus/'><foo 
> xmlns='bar'/></t:valnspace></prop></set></propertyupdate>
> 
> The 'bar' namespace is an invalid one, and expat is quickly to respond 
> with: xmlns: URI bar is not absolute, so I respond with a 400 Bad Request..
> 
> This is also a FAIL for litmus, so I'm curious to what _should_ be 
> returned in this situation..
 > ...

Wow, that's the first time I hear that an XML parser is choking on a 
namespace name.

Whether or not "bar" is a legal namespace name may be controversial; my 
recollection is that the W3C, after lots and lots of messages exchanged 
about that topic, basically deprecated them.

Potentially there's a config switch in expat where you can switch off 
the checking. It's well intended, but I wouldn't me surprised that 
insisting on it may break existing WebDAV clients.

BR, Julian



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I don't understand how COPY/DELETE semantics for the MOVE could apply
to a version controlled resource. It would destroy the version history.
It may be a valid implementation, but not a very useful one.

Regards,

Werner.

On 16 Aug 2008, at 20:21, Geoffrey M Clemm wrote:

>
> The "Hm" note is correct.  A MOVE will create an additional binding =20=

> if the MOVE has REBIND semantics, but not if the MOVE has COPY/=20
> DELETE semantics.
>
> Cheers,
> Geoff
>
> Julian Reschke <julian.reschke@gmx.de> wrote on 08/16/2008 06:31:45 =20=

> AM:
>
> > Julian Reschke wrote:
> > >
> > > Geoffrey M Clemm wrote:
> > >>
> > >> Point 1 is correct.
> > >
> > > Indeed.
> > >
> > > I think Werner is right in that many do not understand the =20
> relation
> > > between BIND and DeltaV, and thus it would be useful to state it.
> > >
> > > We already have a "Relationship to WebDAV Access Control Protocol"
> > > (<http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.
> > html#rfc.section.9>),
> > > so my proposal would be to make that a generic "Relationship to =20=

> other
> > > WebDAV Specifications", and having one subsection for ACL and =20
> DeltaV each.
> > >
> > > The DeltaV part could read (this is mainly Werner's text):
> > >
> > > "When supporting version controlled collections, bindings may be
> > > introduced in a server without actually issuing the BIND method. =20=

> For
> > > instance, when a MOVE is performed of a resource from one
> > > version-controlled collection to another, both collections =20
> should be
> > > checked out. An additional binding would be the result if the =20
> target
> > > collection would be subsequently checked in, while the check-out =20=

> of the
> > > source collection is undone. The resulting situation is =20
> meaningless if
> > > the binding model is not supported."
> > > ...
> >
> > Hm.
> >
> > It just occurred to me that a server that implements MOVE as a =20
> sequence
> > of COPY and DELETE would expose a different behavior -- checking =20
> in the
> > destination collection but reverting the source collection would =20
> turn
> > the operation into the equivalent of a COPY, not a BIND...
> >
> > BR, Julian

--
Werner Donn=E9  --  Re                                     =
http://www.pincette.biz
Engelbeekstraat 8                                               =
http://www.re.be
BE-3300 Tienen
tel: (+32) 486 425803	e-mail: werner.donne@re.be








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I change my response to agree with Werner.
RFC 3253 explicitly requires that the versioning metadata have a MOVE=20
"move" semantics, not "copy/delete" semantics (section 3.15), so the "Hm"=20
note does not apply.

Cheers,
Geoff

Werner Donn=E9 <werner.donne@re.be> wrote on 08/28/2008 04:41:36 AM:

> I don't understand how COPY/DELETE semantics for the MOVE could apply
> to a version controlled resource. It would destroy the version history.
> It may be a valid implementation, but not a very useful one.
>=20
> Regards,
>=20
> Werner.
>=20
> On 16 Aug 2008, at 20:21, Geoffrey M Clemm wrote:
>=20
> >
> > The "Hm" note is correct.  A MOVE will create an additional binding=20
> > if the MOVE has REBIND semantics, but not if the MOVE has COPY/=20
> > DELETE semantics.
> >
> > Cheers,
> > Geoff
> >
> > Julian Reschke <julian.reschke@gmx.de> wrote on 08/16/2008 06:31:45=20
> > AM:
> >
> > > Julian Reschke wrote:
> > > >
> > > > Geoffrey M Clemm wrote:
> > > >>
> > > >> Point 1 is correct.
> > > >
> > > > Indeed.
> > > >
> > > > I think Werner is right in that many do not understand the=20
> > relation
> > > > between BIND and DeltaV, and thus it would be useful to state it.
> > > >
> > > > We already have a "Relationship to WebDAV Access Control Protocol"
> > > > (<http://greenbytes.de/tech/webdav/draft-ietf-webdav-bind-latest.
> > > html#rfc.section.9>),
> > > > so my proposal would be to make that a generic "Relationship to=20
> > other
> > > > WebDAV Specifications", and having one subsection for ACL and=20
> > DeltaV each.
> > > >
> > > > The DeltaV part could read (this is mainly Werner's text):
> > > >
> > > > "When supporting version controlled collections, bindings may be
> > > > introduced in a server without actually issuing the BIND method.=20
> > For
> > > > instance, when a MOVE is performed of a resource from one
> > > > version-controlled collection to another, both collections=20
> > should be
> > > > checked out. An additional binding would be the result if the=20
> > target
> > > > collection would be subsequently checked in, while the check-out=20
> > of the
> > > > source collection is undone. The resulting situation is=20
> > meaningless if
> > > > the binding model is not supported."
> > > > ...
> > >
> > > Hm.
> > >
> > > It just occurred to me that a server that implements MOVE as a=20
> > sequence
> > > of COPY and DELETE would expose a different behavior -- checking=20
> > in the
> > > destination collection but reverting the source collection would=20
> > turn
> > > the operation into the equivalent of a COPY, not a BIND...
> > >
> > > BR, Julian
>=20
> --
> Werner Donn=E9  --  Re                                     http://www.
> pincette.biz
> Engelbeekstraat 8=20
> http://www.re.be
> BE-3300 Tienen
> tel: (+32) 486 425803   e-mail: werner.donne@re.be
>=20
>=20
>=20
>=20
>=20

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<br><tt><font size=3D2>I change my response to agree with Werner.</font></t=
t>
<br><tt><font size=3D2>RFC 3253 explicitly requires that the versioning met=
adata
have a MOVE &quot;move&quot; semantics, not &quot;copy/delete&quot; semanti=
cs
(section 3.15), so the &quot;Hm&quot; note does not apply.</font></tt>
<br>
<br><tt><font size=3D2>Cheers,</font></tt>
<br><tt><font size=3D2>Geoff</font></tt>
<br>
<br><tt><font size=3D2>Werner Donn=E9 &lt;werner.donne@re.be&gt; wrote on 0=
8/28/2008
04:41:36 AM:<br>
<br>
&gt; I don't understand how COPY/DELETE semantics for the MOVE could apply<=
br>
&gt; to a version controlled resource. It would destroy the version history=
.<br>
&gt; It may be a valid implementation, but not a very useful one.<br>
&gt; <br>
&gt; Regards,<br>
&gt; <br>
&gt; Werner.<br>
&gt; <br>
&gt; On 16 Aug 2008, at 20:21, Geoffrey M Clemm wrote:<br>
&gt; <br>
&gt; &gt;<br>
&gt; &gt; The &quot;Hm&quot; note is correct. &nbsp;A MOVE will create
an additional binding &nbsp;<br>
&gt; &gt; if the MOVE has REBIND semantics, but not if the MOVE has COPY/
<br>
&gt; &gt; DELETE semantics.<br>
&gt; &gt;<br>
&gt; &gt; Cheers,<br>
&gt; &gt; Geoff<br>
&gt; &gt;<br>
&gt; &gt; Julian Reschke &lt;julian.reschke@gmx.de&gt; wrote on 08/16/2008
06:31:45 &nbsp;<br>
&gt; &gt; AM:<br>
&gt; &gt;<br>
&gt; &gt; &gt; Julian Reschke wrote:<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; Geoffrey M Clemm wrote:<br>
&gt; &gt; &gt; &gt;&gt;<br>
&gt; &gt; &gt; &gt;&gt; Point 1 is correct.<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; Indeed.<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; I think Werner is right in that many do not understand
the &nbsp;<br>
&gt; &gt; relation<br>
&gt; &gt; &gt; &gt; between BIND and DeltaV, and thus it would be useful
to state it.<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; We already have a &quot;Relationship to WebDAV Access
Control Protocol&quot;<br>
&gt; &gt; &gt; &gt; (&lt;http://greenbytes.de/tech/webdav/draft-ietf-webdav=
-bind-latest.<br>
&gt; &gt; &gt; html#rfc.section.9&gt;),<br>
&gt; &gt; &gt; &gt; so my proposal would be to make that a generic &quot;Re=
lationship
to &nbsp;<br>
&gt; &gt; other<br>
&gt; &gt; &gt; &gt; WebDAV Specifications&quot;, and having one subsection
for ACL and &nbsp;<br>
&gt; &gt; DeltaV each.<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; The DeltaV part could read (this is mainly Werner's
text):<br>
&gt; &gt; &gt; &gt;<br>
&gt; &gt; &gt; &gt; &quot;When supporting version controlled collections,
bindings may be<br>
&gt; &gt; &gt; &gt; introduced in a server without actually issuing the
BIND method. &nbsp;<br>
&gt; &gt; For<br>
&gt; &gt; &gt; &gt; instance, when a MOVE is performed of a resource from
one<br>
&gt; &gt; &gt; &gt; version-controlled collection to another, both collecti=
ons
&nbsp;<br>
&gt; &gt; should be<br>
&gt; &gt; &gt; &gt; checked out. An additional binding would be the result
if the &nbsp;<br>
&gt; &gt; target<br>
&gt; &gt; &gt; &gt; collection would be subsequently checked in, while
the check-out &nbsp;<br>
&gt; &gt; of the<br>
&gt; &gt; &gt; &gt; source collection is undone. The resulting situation
is &nbsp;<br>
&gt; &gt; meaningless if<br>
&gt; &gt; &gt; &gt; the binding model is not supported.&quot;<br>
&gt; &gt; &gt; &gt; ...<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; Hm.<br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; It just occurred to me that a server that implements MOVE
as a &nbsp;<br>
&gt; &gt; sequence<br>
&gt; &gt; &gt; of COPY and DELETE would expose a different behavior --
checking &nbsp;<br>
&gt; &gt; in the<br>
&gt; &gt; &gt; destination collection but reverting the source collection
would &nbsp;<br>
&gt; &gt; turn<br>
&gt; &gt; &gt; the operation into the equivalent of a COPY, not a BIND...<b=
r>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; BR, Julian<br>
&gt; <br>
&gt; --<br>
&gt; Werner Donn=E9 &nbsp;-- &nbsp;Re &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; http://www.<br>
&gt; pincette.biz<br>
&gt; Engelbeekstraat 8 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br>
&gt; http://www.re.be<br>
&gt; BE-3300 Tienen<br>
&gt; tel: (+32) 486 425803 &nbsp; e-mail: werner.donne@re.be<br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; <br>
&gt; <br>
</font></tt>
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Geoffrey M Clemm wrote:
> 
> I change my response to agree with Werner.
> RFC 3253 explicitly requires that the versioning metadata have a MOVE 
> "move" semantics, not "copy/delete" semantics (section 3.15), so the 
> "Hm" note does not apply.
> 
> Cheers,
> Geoff

I agree as well.

So, should I spend some energy into integrating the proposal in 
<http://lists.w3.org/Archives/Public/w3c-dist-auth/2008JulSep/0039.html> 
into the current version of the draft?

BR, Julian



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On 28-Aug-08, at 3:52 AM, Julian Reschke wrote:

>
> Evert | Rooftop wrote:
>> ...
>> This was the first oddnesss, since it actually requests to delete  
>> the already deleted properties at first. According to spec.. I  
>> return the appropriate 404's and 200's:
>> ...
>
> "Specifying the removal of a property that does not exist is not an  
> error." -- <http://greenbytes.de/tech/webdav/rfc4918.html#rfc.section.14.23 
> >

Thanks for this ..

>
>
>> ...
>> <?xml version="1.0" encoding="utf-8" ?><propertyupdate  
>> xmlns='DAV:'><set><prop><t:valnspace xmlns:t='http://webdav.org/neon/litmus/' 
>> ><foo xmlns='bar'/></t:valnspace></prop></set></propertyupdate>
>> The 'bar' namespace is an invalid one, and expat is quickly to  
>> respond with: xmlns: URI bar is not absolute, so I respond with a  
>> 400 Bad Request..
>> This is also a FAIL for litmus, so I'm curious to what _should_ be  
>> returned in this situation..
> > ...
>
> Wow, that's the first time I hear that an XML parser is choking on a  
> namespace name.
>
> Whether or not "bar" is a legal namespace name may be controversial;  
> my recollection is that the W3C, after lots and lots of messages  
> exchanged about that topic, basically deprecated them.
>
> Potentially there's a config switch in expat where you can switch  
> off the checking. It's well intended, but I wouldn't me surprised  
> that insisting on it may break existing WebDAV clients.
>
> BR, Julian
>

I'm going to try to figure out a way around these warnings.. I  
actually also replace 'DAV:' with urn:DAV before parsing, for the same  
reasons..

Thanks a lot, this is really helpful..

Evert



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Subject: WebDAV SEARCH draft 18 submitted, was: WebDAV SEARCH Last Call over
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FYI:

> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> 
> 	Title           : Web Distributed Authoring and Versioning (WebDAV) SEARCH
> 	Author(s)       : J. Reschke, et al.
> 	Filename        : draft-reschke-webdav-search-18.txt
> 	Pages           : 62
> 	Date            : 2008-08-30
> 
> This document specifies a set of methods, headers and properties
> composing WebDAV SEARCH, an application of the HTTP/1.1 protocol to
> efficiently search for DAV resources based upon a set of client-
> supplied criteria.Editorial Note (To be removed by RFC Editor before
> publication)
> 
> Please send comments to the Distributed Authoring and Versioning
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> DASL mailing list are archived at
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> 
> An issues list and XML and HTML versions of this draft are available
> from <http://greenbytes.de/tech/webdav/#draft-reschke-webdav-search>.
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-reschke-webdav-search-18.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
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>> ...
>> With respect to point 3, I'm willing to follow John's proposal to 
>> relax the MUST to a SHOULD. Feedback on this one appreciated, in 
>> particular if somebody feels strongly about it and doesn't want it to 
>> be changed.
>> ...
> 
> For now I have changed the text to say "SHOULD", see 
> <http://greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html#rfc.section.5.17.1>. 
> 
> 
> In absence of other feedback I'll submit this one as draft 18 sometime 
> next week.
> 
> Best regards, Julian
> 




