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Re: SAX2/Java: Towards a final form

  • From: David Megginson <david@m...>
  • To: XMLDev list <xml-dev-digest@i...>
  • Date: Mon, 10 Jan 2000 11:18:59 -0500 (EST)

Re: SAX2/Java: Towards a final form
Henry S. Thompson writes:

 > Just so there is no possible confusion arising from the overhang of
 > the namespaces&attributes threads of the last few weeks, please
 > confirm that
 >   a) getURI should return the empty string iff getRawName returns a string
 >      without a colon;

No, because getRawName() may return null if the SAX2 driver does not
support reporting raw names (i.e. if it is iterating over a database
where there are no raw XML 1.0 element names to deal with).  

There is also the possibility that there will be a SAX feature to ask
the XMLReader to place all unprefixed attribute names into the parent
element's Namespace at user option (the default will be to leave them

 >   b) The 'uri' argument to getType and getValue must be empty for them 
 >      to succeed if getRawName returns a string without a colon;

By default, yes, though see above for the possibility of a feature
that could invoke a different behaviour.

 >   c) An exception should be thrown if an element or attribute name is
 >      encountered with a prefix for which no declaration is in scope.

Well, an error callback, at least.  SAX uses callbacks and lets the
app decide whether to throw an exception or continue processing (on
the understanding that the information is no longer usable except for
error reporting).

All the best,


David Megginson                 david@m...

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