SAX2: Namespace proposal

Hill, Les lhill at
Mon Dec 20 21:09:14 GMT 1999

David Megginson writes:
> The main choice, then, is between the following (imagine that 
> "foo" is 
> a full URI):
>   startNamespace("foo")
>   startElement("bar", atts)
>   character("Hello, world!")
>   endElement("bar")
>   endNamespace("foo")
> and
>   startElement("foo", "bar", atts)
>   characters("Hello, world!")
>   endElement("foo", "bar")

How could the first work without the expanded signature of the second?
Imagine the following:

<f:bar xmlns:f="foo" xmlns:b="baz" b:y="z">

resulting in:

	startElement("bar", atts)

which namespace is "bar" in?

Where is the "efficiency" in the second without the explicit namespace
events?  Imagine the following:

<f:bar xmlns:f="foo" xmlns:b="baz" b:y="z">
	<f:moo b:x="z">

resulting in:

	startElement("foo", "bar", atts) <== must parse and remember the
	startElement("baz", "moo", atts) <== refer to above

note that the parsing and storing of the namespaces is ADDED work as the
parser must have already done so itself!

Perhaps the two should be combined...


Les Hill
Senior Architect

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