Re: [Exist-development] ANN: upgrade of webdav interface in Trunk

[Anton K. <ak...@de...>]

Hi Dannes,

On 26.09.2010 16:28, Dannes Wessels wrote:

> (2) I'll dive into it myself. It is impossible in exist to get a lock on
> collection. I implemented it by using a null reference, but that does
> not work as it seems. I have some ideas how to improve this

Unfortunately, my knowledge in eXist locking is nearly zero, but you 
mentioned twice collection locks - actually in my first note, client 
issues LOCK on non existing resource (not collection):

192.168.2.124 -  -  [25/IX/2010:01:03:48 +0000] "LOCK
/exist/webdav2/db/test/t5 HTTP/1.1" 500 47

t5 in touch /db/test/t5 is resource, test is existing collection

BTW, old implementation execution flow reaches createNullResource:

http://exist.svn.sourceforge.net/viewvc/exist/trunk/eXist/src/org/exist/http/webdav/methods/Lock.java?view=markup#l84

during processing of the request.

>
> Does the size affect the correct operation of the client? I really don't
> hope, because I cannot think of a good solution.

Unfortunately yes :-(.

May be one of possible workarounds is:

Subclass MiltonDocument ():

http://exist.svn.sourceforge.net/viewvc/exist/trunk/eXist/extensions/webdav/src/org/exist/webdav/MiltonDocument.java?view=markup#l67

with let say MD2:

     public Long getContentLength() {
         return null;
     }

then in getResource:

http://exist.svn.sourceforge.net/viewvc/exist/trunk/eXist/extensions/webdav/src/org/exist/webdav/ExistResourceFactory.java?view=markup#l104

use MD2 instead of MiltonDocument

(this will produce the same behavior as old implementation - x*4k in 
PROPFIND, chunked in GET)

Kind regards,
Anton