Cart
[Home] [By Thread] [By Date] [Recent Entries]
At 09:52 AM 1/16/2003 -0600, Bullard, Claude L (Len) wrote:
>It is. Not new news. As the guy who talked long about
>loose coupling, he knows what the tradeoffs are in data
>driving with a syntax unification approach based on
>a hierarchical format. Path identification should
>go away in the program but how else will we deal
>with selectors? XML is not object-oriented.
>
>He's right that the code examples are real ugly.
>So the alternatives are?
In XQuery, you can remain loosely coupled while improving the figure/noise
ratio of your code. The following computes the PE Ratio for IBM:
let $stock := document("stocks.xml")/stock[@id="IBM"]
return $stock/price / ($stock/revenues - $stock/expenses)
I do think this is more elegant than the equivalent SAX or DOM. It is no
more tightly coupled.
Jonathan
|
