[Exist-open] WebDAV problem in trunk - "if-match comparison failed"

[Joe W. <jo...@gm...>]

Hi all,

Since updating to eXist 2.1-dev rev. 16847, I am unable to copy any file
into the database via WebDAV if the file already exists.  This is using
Windows XP desktop as well as oXygen's File > Save to URL with a webdav
URL.  Here is a reproducible test:

1. Create a collection called /db/test in the database

2. Save a new file to this collection, /db/test/test.xml, with simple
contents like: <x/>

3. Create another new file and try to save over this file; for example, in
oXygen create a new file, put something simple into it like <y/>, and do
File > Save to URL > http://localhost:8080/exist/webdav/db/test/test.xml.

oXygen's warning dialog says:

"Cannot save the file. 412 Precondition Failed for:
http://localhost:8080/exist/webdav/db/test/test.xml"

exist.log says:

2012-07-16 14:02:09,596 [eXistThread-28] INFO (MiltonResource.java
[authorise]:350) - PROPFIND /db/test (write=false)
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonResource.java
[authorise]:415) - User admin is authorized to read resource /db/test
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonCollection.java
[getCurrentLock]:332) - '/db/test'
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonCollection.java
[getChildren]:179) - Nr of children=1
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonDocument.java
[getCurrentLock]:499) - getLock: /db/test/test.xml
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:325) - Get current lock /db/test/test.xml
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:347) - Document /db/test/test.xml does not contain
userlock
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:387) - Finished probe lock
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonDocument.java
[getCurrentLock]:504) - No database lock token.
2012-07-16 14:02:09,596 [eXistThread-28] DEBUG (MiltonDocument.java
[getContentLength]:369) - Size=4096 (/db/test/test.xml)
2012-07-16 14:02:12,237 [eXistThread-28] INFO (HttpManager.java
[process]:213) - PUT :: http://localhost:8080/exist/webdav/db/test/test.xml-
http://localhost:8080/exist/webdav/db/test/test.xml
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistResourceFactory.java
[getResource]:93) - host='localhost:8080' path='/db/test/test.xml'
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistResourceFactory.java
[getResourceType]:145) - Path: /db/test/test.xml
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistResourceFactory.java
[getResourceType]:198) - Resource type=DOCUMENT
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (MiltonDocument.java
[getCurrentLock]:499) - getLock: /db/test/test.xml
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:325) - Get current lock /db/test/test.xml
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:347) - Document /db/test/test.xml does not contain
userlock
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (ExistDocument.java
[getCurrentLock]:387) - Finished probe lock
2012-07-16 14:02:12,237 [eXistThread-28] DEBUG (MiltonDocument.java
[getCurrentLock]:504) - No database lock token.
2012-07-16 14:02:12,237 [eXistThread-28] INFO (PutHandler.java
[process]:116) - if-match comparison failed, aborting PUT request


On this final line, the log says that "if-match comparison failed".  Could
this error be a side effect of the recent upgrade of the Milton jars from
1.8.0.1 to 1.8.1.1?  I noticed that the release notes for Milton 1.8.1 said
something about "if-match comparison" --
http://lists.justthe.net/pipermail/milton-users/2012-July/001398.html.

Thanks very much in advance for any assistance.

Joe