Woonsan Ko created VFS-759:
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Summary: WebDAV providers should loaded only when
commons-vfs2-jackrabbit* jar available
Key: VFS-759
URL: https://issues.apache.org/jira/browse/VFS-759
Project: Commons VFS
Issue Type: Improvement
Affects Versions: 2.6.0
Reporter: Woonsan Ko
Fix For: 2.7.0
In corner cases, VFS loading may fail totally.
One corner case reported by Xeno Amess [1]:
- The (a) webdav4(s) file system providers requires (b) jackrabbit-webdav jar,
which requires (c) httpclient4 library.
- The standard providers.xml checks classes from (b) and (c) only, so if (a)
doesn't exist in the system, the VFS core library fails to load itself.
For example, the reporter found out that versions-maven-plugin pulls in (b)
and (c).
So, when the VFS core is only used in their system, it just fails because it
does not have (a).
- A workaround is to just install commons-vfs2-jackrabbit* jar as well in the
system.
But it would be cleaner if the standard providers.xml would have checked a
class in (a) as well, to avoid this kind of problems.
[1]
https://lists.apache.org/thread.html/rbe64575979ef5f6a677e301d109dbea81c81ba82db556128fe917986%40%3Cdev.commons.apache.org%3E
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