Last modified: 2010-05-28 13:37:21 UTC

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Bug 22368 - Ask statement that includes ?Category for printout crashes
Ask statement that includes ?Category for printout crashes
Status: RESOLVED WORKSFORME
Product: MediaWiki extensions
Classification: Unclassified
Semantic MediaWiki (Other open bugs)
unspecified
All All
: Normal normal (vote)
: ---
Assigned To: Markus Krötzsch
:
Depends on:
Blocks:
  Show dependency tree / graph
 
Reported: 2010-02-03 09:57 UTC by Alfredas
Modified: 2010-05-28 13:37 UTC (History)
0 users

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---

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Description Alfredas 2010-02-03 09:57:20 UTC 
In http://semantic-mediawiki.org/wiki/Help:Displaying_information 
the paragraph on Printing Categories says that adding ?Category should print out the category. 

Instead this query:

{{#ask: [[Category:City]]
|?Category
}}

produces the following error:

Catchable fatal error: Argument 2 passed to SMWSQLStore2::getPropertyValues() must be an instance of SMWPropertyValue, null given, called in /var/lib/mediawiki/extensions/SemanticMediaWiki/includes/storage/SMW_QueryResult.php on line 268 and defined in /var/lib/mediawiki/extensions/SemanticMediaWiki/includes/storage/SMW_SQLStore2.php on line 339

Might it be related to subcategories being treated differently?

Also

{{#ask: [[Category:City]]
|?Category:City 
}}

works as expected.
Comment 1 Markus Krötzsch 2010-03-02 09:54:07 UTC 
I cannot reproduce this bug on the current version of SMW. Which version/release of SMW is used? Does the problem still occur?

Also see http://sandbox.semantic-mediawiki.org/wiki/Test_Bug_22368 for a demonstration.
Comment 2 Markus Krötzsch 2010-05-28 13:37:21 UTC 
Closing as WORKSFORME since the bug has not been re-encountered.
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