Web service is nice stuff but would incur too much overhead IMO. Let alone
start-up costs.
Cheers,
Pieter
-----Original Message-----
From: Barry Lay [mailto:blay(_at_)laysercomputing(_dot_)com]
Sent: Friday, June 03, 2005 11:24 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] Saxon for windows?
The XSL-as-web-service is intriguing but I do have some concerns about a
command-line processor. The comment George makes about the JVM startup
overhead can be extended to most things run from the command line - there
will be system-related activity that has little to do with the work that
will be incurred each time. If this is a concern for XSLT the processor can
be properly hosted within the web server. Saxon is ideal for this as it is
Java based. It would be fairly straightforward to create a web service for
this purpose that could be dropped into a J2EE container and run on whatever
kind of platform you like (Windows, Linux, Unix, Mac, etc.), and it doesn't
have to be the same OS as the client.
With Saxon's support for pipelining transformations some of those concerns
could be addressed as well. My main concern with the web service approach
in general is the amount of data that would need to be transmitted across
the network. That may be the real limiting factor in this.
Barry
George Cristian Bina wrote:
Hi Pieter,
It's actually quite simple. I'm using a process class which allows
me to
capture StdOut and StdErr, and that runs a process in the
background. The
background process can be anything that runs via a command line, and
the
best is that it runs completely independent (in Windows this just
means on
another thread). While threads compete with each other for CPU time,
when
the process runs, the main thread just waits for its output, which
means
that the child thread can use all CPU available, thus maximum
performance is
guaranteed (under normal circumstances and no other tasks running
assumed).
What about the java start up time? You will add that at each run.
And if you run the transformation only once then I think you will not
get the best of Java either - I always hear that if you want to
measure how much time a stylesheet takes for processing you should not
look at the times of the first runs.
My 2 cents...
Regards,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com
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