[Bug 5023] Relationship between identity constraints and assertions

http://www.w3.org/Bugs/Public/show_bug.cgi?id=5023





--- Comment #14 from Michael Kay <mike@saxonica.com>  2009-04-15 16:17:34 ---
>in a highly successful commercial product, XML Spy

The fact that XML Spy is so successful despite its allegedly poor performance
is a good reminder that as technology providers, we often over-estimate the
importance of performance to our users.

(However, the post you cite provides no evidence that XML Spy doesn't using
hashing or indexing to support xsl:key - it seems to be pure conjecture. Such
conjectures by users are often way off the mark, in my experience.)

>My guess is that most XSD implementers will not bother to carefully optimize XPath expressions

Depends on the dynamics of the market. In theory, if the user community needs
it, they will pay for the necessary investment.


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Received on Wednesday, 15 April 2009 16:17:47 UTC