[news.eclipse.tools.emf] Re: xml transformation?

[Ed Merks <Ed.Merks@xxxxxxxxx>]

Marc,

Comments below.


Marc Baumbach wrote:
> Hi Ed,
>
> We're looking to do something a bit odd, but hopefully there's a way 
> to accomplish it. See the below example for what we'd like to transform:
>
> <elementName key="someStr#someValue" value="someContent"/>
>
> Transform to:
>
> <myns:someValue xmlns:myns="someStr#">someContent</myns:someValue>
Having the namespace encode user data has some precedent in terms of 
QName values doing that, but having the element names themselves 
represent user data is definitely a bit odd.
> The most important part is can we turn content in an attribute into an 
> element name and can we do any processing on that content before doing 
> so? I've looked into ExtendedMetaData, but I don't know if that 
> provides enough function to be able to do this complex processing. 
No, because it's dealing with mapping to the Ecore model, not with 
instance data.
> I see the XMLHandler, and XMLSaveImpl/XMLLoadImpl, but those are 
> relatively complex. Perhaps a small snippet if you know a quick way to 
> do something similar to this.
In XMLHandler you'd probably need to specialize handleFeature.  You 
might want to set a breakpoint there and observe how that method is 
reached and how the information is normally processed.  Similarly, have 
a look at which method XMLSaveImpl.saveFeatures calls for that 
particular kind of feature and specialize that method to do special 
processing for this case.
> Thanks in advance!