On Thu, 2007-03-22 at 14:04 +0530, Arun Suresh wrote:
I am currently working on a project where basically we do a lot of XML validation and digestion. For example : We recieve an XML document A, if the document passes schema validation, we do some business level validations, then from A, we create XML digests B, C and D. Our code-base is written completely in Java. We had earlier tried using XSLT, but it became too unwieldy to manage (we ended up making calls to other Java classes from the XSLT engine)
The problem we are facing right now is that we have huge hierarchies of Validators, Digestors and Contexts. It just doesnt look right. I just cant help but wonder if theres a better way of doing this...
You're not the only one.
I have been trying to get my hands dirty with Haskell for a couplo weeks now. all the while keeping the problem at hand in the back of my mind.. I just dont seem to be see how applying functional programming concepts can help in this scenario.. Was wondering if somebody could probably give me some pointers..
Chet Murthy gave a talk on this topic at POPL this year: "Advanced Programming Languages in Enterprise Software: A lambda-calculus theorist wanders into an enterprise datacenter" The slides of the talk are available though sadly you don't get Chet's entertaining commentary. www.classes.cs.uchicago.edu/archive/2007/winter/51091-1/papers/Murthy-popl07.pdf Duncan