If two modules A and B each import a module C, then it's the same as if they
imported two modules C1 and C2 that happen to have identical content. You're
going to end up with a lot of components (templates, variables etc) existing
more than once with different import precedences. Doesn't sound like a good
idea.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Ronan Klyne [mailto:ronan(_dot_)klyne(_at_)groupbc(_dot_)com]
Sent: 29 January 2008 16:01
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] xsl:import performance problems
Hello all,
I have recently found that a particular pattern of imports
causes my stylesheet to take a very long time to compile. I
really wasn't expecting this to happen, and now I hope that
someone can explain to me what is happening...
I have a set of 20 xsl files, with an extra 'master' xsl file
which imports the other files. This works and performs well.
I ran into problems when I changed this arrangement. In an
attempt to break up the set of files so that I could re-use
small parts of them elsewhere, I added an import statement to
each file so that each imported the files it depended upon.
This works out at an average of 3 imports per file, with one
particular file being imported in almost every other.
When I did this, it went from taking 2 seconds to compile to
20 seconds (measured using Saxon's -t switch).
I can't for the life of me work out why this change would
cause such a drastic slowdown. Does anyone have any thoughts
or advice on the matter?
I am using Saxon 6 on Java 1.6, btw.
Ronan
--
Ronan Klyne
Business Collaborator Developer
Tel: +44 01189 028518
ronan(_dot_)klyne(_at_)groupbc(_dot_)com
www.groupbc.com
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