Hi Daniel

Can you provide details about how to fix that but ?

It looks like I need to fix the Variables extension at the very least (not sure if I am using the other two yet - I will have to check when I get back to work).

- Laurent

On Mon, Jul 26, 2010 at 1:41 AM, Daniel Werner <DanWeEtz@web.de> wrote:
Now I was able to solve  the problem. The problem was not a SMW bug, it
was provoked by a bug in the Variables Extension, Array Extension and
HashTables Extension. Variables defined there were like superglobals in
case of some job queue updates, semantic updates and page import. I
thought I checked for this bug already but I had some unexpected
behavior so my test at the first time.
I fixed this bug in all of the three extensions above. Everybody using
those extensions (especially together with SMW) should update them.


On July 7, 2010 at 12:43 AM, Daniel Werner wrote:
> I just deactivated my "SemanticUpdateOnPurge" extension and ran the
> SMW_updateData.php. 1665 IDs were updated but the big surprise: There
> are pages where the bug happened again. Some pages have Attribute values
> from other pages!
> So looks like this is not a bug produced by my extension. Any ideas
> what's happening there?
> Daniel
> On 07.07.2010 20:12, Yaron Koren wrote:
>> I'd guess that this is indeed a result of your "SemanticUpdateOnPurge"
>> extension, since I've never heard of it happening otherwise. I'd
>> un-include that extension and see if the problem persists, to try to
>> isolate the issue.
>> -Yaron
>> On Tue, Jul 6, 2010 at 10:50 PM, Daniel Werner <DanWeEtz@web.de
>> <mailto:DanWeEtz@web.de>> w rote:
>> Hello,
>> I just discovered weird anomalies in the articles SMW properties in one
>> of my wikis. I can not say for sure since when this is happening since
>> the content of my wiki was growing over the last days and for some time
>> before there was nobody working on it.
>> Some weeks ago I updated to SMW 1.5, no 1.5.1 yet. So perhaps this is a
>> bug of 1.5 or it is something else but I am not sure if this ever
>> happened with SMW 1.4 or earlier. At least I never discovered something
>> like that in earlier versions.
>> So the problem is that article pages have properties of OTHER articles.
>> I discovered that this has something to do with the job queue. When a
>> article A updates its semantic data and then calls the job queue and
>> updates another page B, some (but not all) of the pages A properties get
>> passed over to page B!
>> This is really weird and makes a lot of trouble in my wiki. Also it
>> doesn’t happen every time the wiki processes a page from the job queue
>> but I can not say under which exact circumstances this happens.
>> One more thing is, I have the "SemanticUpdateOnPurge" extension
>> installed (I wrote this extension by my own) which updates a pages
>> attributes on a page purge. This bug happens a lot on page purge. I can
>> not even say for sure that it happens when saving the page, too.
>> So perhaps one of you more experienced developers could take a look into
>> the extensions code, perhaps there is something wrong with that but in
>> my opinion it should be save:
>> http://www.mediawiki.org/wiki/Extension:SemanticUpdateOnPurge
>> it is not much code, the most important part is:
>> $title = $parser->getTitle ();
>> $output = $parser->getOutput();
>> SMWParseData::storeData($output, $title, true);
>> Which is called onParserAfterTidy and only when action=purge && the
>> $title is the title of the page which got purged. So the job queue job
>> shouldn’t know any of this, right?
>> I have a bugtracker for my wiki, you can find some more information on
>> this in German language at
>> http://mantisbt.rpgdev.stejau.de/view.php?id=7
>> My wiki is http://gom.rpgdev.stejau.de
>> (I am Player140 there)
>> Would be very happy if we could solve this problem soon. I wonder if
>> it's a SMW bug or something else. Hope you can help me out with this.
>> Thanks a lot for any suggestions!
>> Daniel
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- Laurent Alquier