SAX2: DeclHandler

David Megginson david at
Wed Dec 22 16:01:11 GMT 1999

Khun Yee Fung <kyeefung at> writes:

> I have a question. Right now, the Xerces SAX implementation calls the
> comment() method when a comment is encountered in a DTD. Is this the
> intended behaviour?

It makes sense to use the proposed comment and the existing
processingInstruction callbacks for all comments and
processingInstructions in a document.

> As to whether element and attribute declarations are useful for downstream
> processing. I did find a use. In XPath, there is a function called 'id()'
> which returns a node with a certain ID. Without getting access to the DTD,
> it is actually quite difficult to find out which attribute is the ID of an
> element.

Well, you can also iterate through the AttributeList using getType().

All the best,


David Megginson                 david at

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