https://bugzilla.wikimedia.org/show_bug.cgi?id=47472
Web browser: ---
Bug ID: 47472
Summary: Fatal error for multiple instances of records in
subobjects
Product: MediaWiki extensions
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Unprioritized
Component: Semantic MediaWiki
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
Classification: Unclassified
Mobile Platform: ---
I'm running MediaWiki 1.20 and SMW 1.8.4, newly setup testing wiki.
TextProperty is a normal Property (type String), RecordProperty is a Record,
properly set-up with their own properties, and types, in this case:
Page;Number.
This:
{{#subobject: Test
| TextProperty = Test
| RecordProperty = Testing;123
}}
{{#subobject: Test
| TextProperty = Test2
}}
works without flaws, and adds everything to the same subobject, just as #set
still works when used multiple times with the same properties.
Now, if I move the RecordProperty declaration to the 2nd #subobject, the wiki
will error out with an exception:
{{#subobject: Test
| TextProperty = Test
}}
{{#subobject: Test
| TextProperty = Test2
| RecordProperty = Testing;123
}}
Cannot add subdata. Are you trying to add data to an SMWSemanticData object
that is already used as a subdata object?
Backtrace:
#0 .../extensions/SemanticMediaWiki/includes/SMW_SemanticData.php(442)<...>:
SMWSemanticData->addSubSemanticData(Object(SMWContainerSemanticData))
I don't exactly know what SMWSemanticData objects are supposed to be (are
subobjects?), and what the notion of subdata objects is in this context, and
the documentation was a little unhelpful regarding that, too, so I can't say if
what the error message really says is what I am doing there.
In 1.7, this worked fine, and would add the record data to the #Test subobject
just fine. Am I doing anything that just worked because I was lucky (I supposed
the behavior for #set and #subobject was intended to be the same) or is there a
deeper bug to this? If at all, this error case should be handled more
gracefully than throwing an exception.
I'm using templates on the wiki to hide all the SMW magic, and being able to
declare the SMW subobject data in multiple calls to #subobject helps to keep
their source code tidier.
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