How do i build up a dtd file using xerces-1_2_2 api

[l p]

As xerces-1_2_2 api provides methods to build up an xml document, are there classes and methods in xerces-1_2_2 to build a dtd file.If someone has worked on this, please help out..Its urgent!!
Thanks in advance

[Ajith Kallambella]

Xerces is an XML parser. It can only parse/validate an XML document. The "building" thing you're talking about is the DOM implementation that allows nodes, elements and documents to be created on the fly.
AFAIK, I don't know any feature in Xerces that allows you to create DTDs from XML documents. However, there are some tools and freewares( checkout www.xmlsoftware.com ) that might have this reverse engineering feature ie., given an XML document, generate the DTD.


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Ajith Kallambella M.
Sun Certified Programmer for the Java�2 Platform.
IBM Certified Developer - XML and Related Technologies, V1.

[Ajith Kallambella]

Your name does not comply with the JavaRanch naming policy. We require names to have at least two words, separated by a space, and strongly recommend that you use your full real name. Please spare a moment and re-register with a name that meets the requirements.
Thanks!

[l p]

Dear Ajith Kallambella,
Thank you for the help..
But then, in the Xerces Api's there are certain classes like DTDHandler, DTDGrammer. What are these used for??

[Ajith Kallambella]

These are the call-back implementations that you can register with the parser if your application wants to be notified while the parser steps through the DTD. Since parsing the XML includes parsing the DTD, events are generated during the DTD traversal( I am hesitant to use the word parsing here ). By registering these implementations with the parser, your application can listen to these events and take additional actions if necessary.
I suggest you read the Xerces documentation and also checkout the examples that come with the Xerces download. In addition to these resources, any good book on Java and XML will teach you about DTD handlers.
Hope that helps!
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Ajith Kallambella M.
Sun Certified Programmer for the Java�2 Platform.
IBM Certified Developer - XML and Related Technologies, V1.

[liinaa]

Dear Ajith Kallambella,
Thank you once again.

--liinaa