Re: [xep-support] xpath functions

At 2009-08-21 09:37 -0700, Dmitry Beransky wrote:
>We are migrating our document generation solution from Excel into
>FO/RenderX. Many of Excel functions are not supported by RenderX's
>XPath (e.g. round(<dec_number>, <precision>), max()).

That isn't a problem with RenderX in any way ... there is no 2-arity
round() function in XPath 1 or 2. There is a 2-arity
round-half-to-even(num,precision) function and both a 1-arity and a
2-arity max() function in XPath 2.

>What are my options?

Write your XML to XSL-FO transformation using XSLT 2 instead of XSLT
1, then render the resulting XSL-FO using RenderX without XSLT
transformation. I believe the RenderX tool is shipped with only an
XSLT 1 processor.

>Can I write my own function extensions and if so, how?

XSLT 2 supports user-defined functions but XSLT 1 does not.

There is a free excerpt on our web site of each of the XSLT book and
the XSL-FO book that we sell. The excerpt does not go into detail of
writing user functions in XSLT 2, but the excerpt does talk to the
data flow that distinguishes the XSLT processor responsibilities from
the XSL-FO processor responsibilities.

I hope this helps.

. . . . . . . . . . . . . . . Ken

--
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Video lesson:    http://www.youtube.com/watch?v=PrNjJCh7Ppg&fmt=18
Video overview:  http://www.youtube.com/watch?v=VTiodiij6gE&fmt=18
G. Ken Holman                 mailto:gkholman@CraneSoftwrights.com
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