Author: aaron.graves

Description:
I go to the following URL:

http://wikis.company.com/wiki_instance/index.php/Special:ExportRDF/Namespace:Random_Page

And the XML that is generated is malformed. It appears that any tags that use the dublin core namespace are not printed.

<swivt:Subject rdf:about="&wiki;Foobar">
...
< rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Author Name</>
< rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Title</>
...

As you might guess, those lines ought to look like this:

<dc:author rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Author Name</dc:author>
<dc:title rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Title</dc:title>

Upgrading from 1.3 to 1.4.2 caused this problem. We can't downgrade because we really need the JSON export, but we need the rdf for backwards compatibility as well.

We are running:
Apache 2
PHP 5
MedaWiki 1.14.0
SMW 1.4.2
Ubuntu

Digging through the code, I noticed that $property->getQName() inside the printExpData(...) function (in SMW_SpecialOWLExport.php) is returning a blank string for any DC tags. Unfortunately, I am not familiar with the codebase, and I spent a long time spinning my wheels, trying to figure out where that object gets constructed, with no success.

I should mention that we ran all of the command-line maintenance tools, including the upgrade script and the one that rebuilds all of the semantic data once we upgraded to 1.4.2. Other than this one issue, SMW / MW seem to function as expected.

As I mentioned earlier, this behavior started upon upgrading from SMW 1.3 to 1.4.2 and is not present in 1.3. This bug is causing us a great deal of pain; any assistance the developers might be able to offer would be greatly appreciated.

Version: unspecified
Severity: major