Re: [xsl] XSLT 2.0: Schema-aware processor: What are the compelling advantages o

[Abel Braaksma <abel.online@xxxxxxxxx>]

Justin Johansson wrote:
> I was able to
> run transforms over gigabyte size XML source files faster than any other
> XSLT processor at that time .. all on a 386 box with 256K RAM.  I got a
> bunch of huge XML data files from the Human Genome Mapping Project and felt
> very satisfied when my system was able to process these.
> Most XSLT processors either croaked or the (Windows) virtual memory  system
> ground to a halt when the source got over several megabytes.  Saxon
> survived the best out of all the others .. maybe its use of the tiny tree
> helped it to conserve main memory ???
>   


One for your manager's talk selling points:
AFAIK, the only processor capable of doing large XML chunks (larger than 
fits into available memory, which usually means larger than availmem. 
divided by 4.5 MB) in XSLT 2 at a steady level without increasing the 
use of memory (i.e., streaming) would be Saxon-SA. To make Saxon use 
streaming, you must however craft your XSLT stylesheet in a particular 
way. Details here: 
http://www.saxonica.com/documentation/sourcedocs/serial.html

I don't know if Colin's processor or Altova's processor are capable of 
doing that.

One liner: "speedily processing large XML documents without lockups or 
extreme memory requirements needs Saxon-SA."
Or: "Save $ on hardware with streaming XML / XSLT processing" (but 
memory is not so expensive...)
Or: "Only with Saxon-SA it is possible to process documents in the 
Gigabyte range without performance loss"

Cheers ;)
-- Abel Braaksma