Cart
[Home] [By Thread] [By Date] [Recent Entries]
At 12:38 PM 29/08/01 -0700, John Evdemon wrote: >> Suppose I believe that the way to accomplish this mapping is via >> the labels themselves (I don't; I think decorating the instance with > >definition-pointer attributes - from a different namespace, natch - > is the >way to go). >> >Whoa. I've been following this thread with interest until this rather >casual statement blew me away. Can you do us all a favor and expand a bit >upon this belief? Oh, Matthew was lamenting the fact that mapping from an element to its definition can be expensive given context-sensitive rules. He wants to fix this by applying namespace machinery. I don't like that approach, and suggested a few emails back that if you want to ensure that you only have to do heavyweight schema lookup once, you decorate each node with a pointer to the applicable schema rule. Personally I only use DTDs and schemas at authoring and language design time, and the schema lookup is not a bottleneck, so I don't worry about the problem and wouldn't do this in any case. -Tim
|
