DTD/XSD in java

[Arun]

I need to take either a DTD/XSD (preferably a DTD), and use it as a
schema to process an XML file.
Can someone tell me the best way to do so?

 

[Martin Honnen]

I need to take either a DTD/XSD (preferably a DTD), and use it as a
schema to process an XML file.
Can someone tell me the best way to do so?

With Sun JDK 1.5 there is a special package
<http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/validation/package-summary.html>
for validating against a schema (XSD for example).
DTD validation is different as a DTD is supposed to be linked in from
the XML instance via the
<!DOCTYPE root-element SYSTEM "whatever.dtd">
there all you need to do with Sun JDK 1.4 or later is to use an
appropriate factory (e.g. SAXParserFactory or DocumentBuilderFactory)
from javax.xml.parsers and call setValidating(true).

 

[Arun]

O yes that's right...

I've used antstructure to extract a DTD and now need to convert that to
XSD so i can have a schema to validate XML files used in an app im
creating. Having problems converting it correctly though.

 

[Stanimir Stamenkov]

/Arun/:

I've used antstructure to extract a DTD and now need to convert that to
XSD so i can have a schema to validate XML files used in an app im
creating. Having problems converting it correctly though.

Use some ready-made utility like "trang"
<http://www.thaiopensource.com/relaxng/trang.html>. You may observe
the tools <http://www.w3.org/XML/Schema#Tools> listed on the XML
Schema page as there are similar utilities, too.