[protege-discussion] XML Tab / class missing

[Jonathan Carter]

Hi Sean,

I've been trying to replicate this using Protege 3.4.1 but when I drag  
a class from the class browser (on the right) to the 'instances' field  
(on the left) the classes - both concrete and abstract - remains in  
the class browser. The name of the class is copied into the  
'instances' field but nothing else happens. I got an XML  
representation of the ontology (I tried both the radio button options:  
no ontology and XML tree) saved to the Protege root directory using  
the name of the Class that I'd dragged across when I pushed the  
'<<export button'.

Sadly, I don't seem to be able to replicate this problem. Maybe I'm  
missing a step?

Are you using a file-based or a database backend for Protege? If it's  
the PINS/PONT and you can see the class (as you suggest) it should be  
possible to 'wire it' back into place by editing the PONT file  
accordingly. This is a bit more 'tricky' if you have a database backend!
A search for the missing class in the Classes Tab didn't show your  
class (e.g. been accidentally refactored to a new parent class)?

Hope this helps.

Jonathan

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Jonathan Carter - Head of Technical Architecture
Enterprise Architecture Solutions Ltd
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On 23 Nov 2009, at 16:36, Sean Hickling wrote:

> Hello,
>
> In the XML tab, I dragged a class from the class browser window to  
> the 'instances' field of the tab.  At that point the class  
> disappeared from the class hierarchy.  Preliminary look at the  
> underlying database shows the class is still in Protege, but no  
> longer visible in the class browser.  This may not have been proper  
> use of the tab, but nevertheless we hope to recover the class.  Any  
> thoughts?
>
> Also, it appears this question was posed in the archives but never  
> answered.
> http://article.gmane.org/gmane.comp.misc.ontology.protege.general/443/match=xml+tab+export
>
> Thanks
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