[Insight-developers] LIBXML2 : Data Provenance Roadmap ?

[Luis Ibanez]

In an effort to put this discussion into context:


     Is there a roadmap on how data provenance
       is going to be integrated into ITK ?



To be more concrete:


a) Are we talking about a new framework of classes
    that will be added to the toolkit ?

b) Are we talking about modifications to the basic
    classes such as the itk::Image, MetaDataDictionary
    or the ImageIO classes ?

c) Is libxml2 the only 3rd party library needed ?
    or do we need to include additional tools in
    order to have a functional support for data
    provenance ?



  What ITK classes are going to use the libxml2 API ?


  Who will be the typical users of these classes ?


  Is this a functionality that will interest all ITK users ?
  or is it more targeted to a 20% of the users,
  10% of the users ? 1% ?



   Answering these questions should help us evaluate
   how libxml2 should be integrated with ITK.



       Luis



---------------------
Julien Jomier wrote:
> Bill, Stephen and others,
> 
> Independently of Stephen's work, for what we are doing with the 
> integration XCede data provenance and ITK we will need libxml2 at some 
> point. We started to work on XCede with Expat with mixed success and 
> found out that libxml2 does the job very well. All our current 
> development is based on libxml2.
> 
> I understand your concern, however libxml2 has been compiling on VTK's 
> dashboard for a long time and ITK and VTK are sharing a lot of the 
> compilers/OS, so I don't see that has a major issue (unless I'm missing 
> something).
> 
> I agree that libxml2 is a big library and we should investigate if it's 
> worth the integration into ITK. If other developers can raise their 
> opinion on the subject that would be great, also we might want to send 
> an email to the users list to get some feedbacks...
> 
> my two cents,
> 
> Julien
> 
> Bill Lorensen wrote:
> 
>> Stephen,
>>
>> I just checked the LOC-load of the two libraries:
>> expat - ~11,000 LOC
>> xml2 - ~210,000 LOC
>>
>> Is the xml2 LOC-load worth it in itk and slicer?
>>
>> Bill
>>
>>
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