<prop:last-modified> is not a property that you can manually set.  I believe 
that is a security issue.

From: [email protected] 
[mailto:[email protected]] On Behalf Of Mike Sokolov
Sent: Thursday, May 22, 2014 8:26 AM
To: MarkLogic General ML
Subject: Re: [MarkLogic Dev General] best practices for manual directory 
creation

I'm getting good results updating the directory timestamps using:

xdmp:document-set-properties ($dir-uri, <prop:directory/>)

and this seems to limit the number of prop:directory properties to 2 too

-Mike
On 05/22/2014 10:03 AM, Mike Sokolov wrote:
I'm working with a system that requires directories and directory-modified 
timestamps (for a webDAV-like browsing feature), but have found that automatic 
directory creation introduces unacceptable lock contention during bulk updates, 
so I am looking into managing the directory creation and timestamp updates 
manually.

I have one question, and one strange observation - maybe a bug.  I'm working 
with 7.0-2.3.

First the question: how should I update the prop:last-modified property?

Updating it explicitly raises an error:
XDMP-ARG: xdmp:document-set-property("/books/", <prop:last-modified 
xmlns:prop="http://marklogic.com/xdmp/property";<https://urldefense.proofpoint.com/v1/url?u=http://marklogic.com/xdmp/property&k=wlPCrglRP6kzT4RbABWMaw%3D%3D%0A&r=2FOxwjXkcRFP9Zb5gsGqutGbMyYaH6V5O1y2qyDOE%2Bw%3D%0A&m=tMQwNzleMcPFHrHVywsz7LShGCB7BV0fr4nwOoRO9yE%3D%0A&s=b129b0afdc261f273e05e156d512fac53273fae49be30e4e6423deb66508ad09>>2014-05-22T15:53:46.724003+02:00</prop:last-modified>)
 -- Invalid argument

even though I have "maintain directory last modified" set to false (and 
directory creation = manual).  I do have maintain last modified set to true, so 
I expect that is happening automatically on directory creation - OK, but in 
that instance how would I update the directory modified time when inserting or 
deleting documents in the directory?

I tried adding a dummy property using xdmp:set-property, and that does seem to 
update the timestamp, but I don't really want to do that if I don't have to, of 
course.  Perhaps I could delete and then recreate the directory properties 
document, but that doesn't seem great either. Any other ideas?

Now the weird observation.  It seems that every time I modify the directory 
properties document, it gets another <prop:directory /> property node!  
Currently I have:

<prop:properties 
xmlns:prop="http://marklogic.com/xdmp/property";<https://urldefense.proofpoint.com/v1/url?u=http://marklogic.com/xdmp/property&k=wlPCrglRP6kzT4RbABWMaw%3D%3D%0A&r=2FOxwjXkcRFP9Zb5gsGqutGbMyYaH6V5O1y2qyDOE%2Bw%3D%0A&m=tMQwNzleMcPFHrHVywsz7LShGCB7BV0fr4nwOoRO9yE%3D%0A&s=b129b0afdc261f273e05e156d512fac53273fae49be30e4e6423deb66508ad09>>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:directory/>
<prop:last-modified>2014-05-22T15:47:37+02:00</prop:last-modified>
</prop:properties>

I thought that properties documents maintained a map with unique keys?

-Mike




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