[Versa] Issue 3

[Uche Ogbuji]

On Fri, 2005-08-12 at 09:15 -0600, Michael Olson wrote:
> >
> > You can use filter:
> >
> > filter(properties(some_node), "some_node - . -> eq('foo')")
> 
> >
> > Hmm.  It seemed pretty straightforward to me.  Did you find some
> > conceptual limitation in the description of filter()?
> >
> 
> The filter method is not in the version of the spec I have.  If it  
> works then cool.

Are you sure you're not on a 4Suite branch?


> >>> This means that statement would need to be added as a data type.   
> >>> with
> >>> conversion and a set of functions......
> >
> > I think this is all good discussion, but again, I think too much for
> > Versa 1.0.
> >
> 
> It might be.
> 
> > I think we need to be unconstrained by backwards compatability, and I
> > think this means 2.0.
> >
> 
> I don't know how unconstrained we want to be.  I like a lot about the  
> language and would want to keep it as is.

I agree with that.  But sometimes even subtle changes can break back
compat, such as your traversal-result-as-statement suggestion.

> > Note: I don't think 2.0 has to be a 3 year process.  I think that we  
> > can
> > get it out as quickly as we could get out a 1.0, especially considering
> > the size of some of the changes suggested for 1.0.
> >
> 
> I know.  I also don't think 2.0 requires a working implementation so we  
> would not be constrained with getting 4RDF done, etc.

Agreed, but I do intend to keep 4RDF up to clearly stable suggestions,
so I'm not worried about its languishing.


-- 
Uche Ogbuji                               Fourthought, Inc.
http://uche.ogbuji.net                    http://fourthought.com
http://copia.ogbuji.net                   http://4Suite.org
Use CSS to display XML, part 2 - http://www-128.ibm.com/developerworks/edu/x-dw-x-xmlcss2-i.html
XML Output with 4Suite & Amara - http://www.xml.com/pub/a/2005/04/20/py-xml.html
Use XSLT to prepare XML for import into OpenOffice Calc - http://www.ibm.com/developerworks/xml/library/x-oocalc/
Schema standardization for top-down semantic transparency - http://www-128.ibm.com/developerworks/xml/library/x-think31.html