just for information, i've achieved some template migration from jxtg (2.2-dev) to xslt 2.0 (saxon8) and record a 7 to 10 factor speed increase on the same pages (cache desactivated).
the templates (jx+jpath) were transformed (for the biggest part) by a simple xslt 2.0 stylesheet. Common constructions and expressions are almost trivial to convert to xslt 2.0 + xpath 2.0. jx:import is converted to xi:include (handled by xerces) and jx:macro to xsl:template (sometimes manually rewritten to xsl:function). Only a few manual modifications were necessary to make things work (jexl java tricks -> clean xsl). We didn't use fancy things at all. flow and pipeline are almost the same (sendpage params to url params, and dom param to generator inside pipeline). Some of our pages are still in jxtg. We need to drive transformation based on cform model. jxtg + cform macros are really usefull here, but i'm really frighten by the poor performance we have on quite a big model + template (several seconds: who's guilty ?). I'm quite convinced that cform generator + xslt 2.0 library (functions and templates) could make things as easy as they are with jx + cform macros. Anybody went through this way before ?
