Re: Experiences of XML parser generators for Ada?

["Robert C. Leif" <rleif@rleif.com>]

   
   I have had the experience of manually creating a dual system of XML
schema and Ada for Cytometry, CytometryML.  This is described, at length in
the CytometryML page of my web site, WWW.NewportInstruments.com. I also gave
a Birds of a Feather Presentation in absentia at SIGAda 2004, which is also
available on the Ada_Med page and includes audio. 
   Translation of most of Ada into XML and XML schemas is straightforward
and probably can be facilitated by constructing tools based on ASIS.
However, when the XML including schemas is defined as elements with a hidden
type, there could be a problem.  One simple solution is to declare a type
with a name which is a concatenation of the XML element's name and the
suffix type.  In many case, it would be appropriate to make the Ada type
private.
I have created numeric data-types in Ada and XML schema with the same names.
As luck would have it, these ECMA based names are also used for MathCad. I
have also created Ada bounded strings that include character sets.  These
provide a close approximation of XML strings.  XML strings can also include
a constraint based on a minimum number of characters.
I still strongly believe a description of Ada in the form of XML schema
should be created.  The goal is to construct eventually a programming
environment including an editor based on XML. 
Bob Leif