ANN: Schema Converters, Version 1.0

Ronald Bourret rbourret at
Tue Sep 28 14:27:46 BST 1999

[My apologies if you get this twice -- it looks like it didn't go through 
the first time.]

Version 1.0 of the Schema Converter package is now available at:

The Schema Converters are a set of Java packages you can use to: a) model a 
DTD as Java objects, and b) convert to and from these objects from DTDs and 
XML schema languages. Thus, it is possible to build arbitrary converters
between different schema languages, as well as to and from DTDs.

The Bad News:
The only schema language currently supported is DDML.

The Good News:
The package includes a converter from a DTD to the intermediate DTD 
objects, which is the hardest converter to write, being most of an XML 

What This All Means:
If you need to convert between DTDs and DDML, just download the package and 
use it.

If you need to convert *from* DTDs *to* any schema language other than 
you can use the package as a basis and write your own converter from the
intermediate DTD objects to the schema language. This takes about half a
day, assuming you know the schema language.

If you need to convert *from* a schema language other than DDML *to* a DTD, 
writing the converter takes about a day, assuming you support only the
basic constructs. (It will take longer if, for example, you support such
things as archetypes in the W3C's schema language or schema reuse in SOX or 

The Schema Converter package is completely free for use in both commercial
and non-commercial settings and comes with complete documentation and
source code.

-- Ron Bourret

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