Subject: Re: XHTML to WML problem From: Tom Myers <tom.myers@xxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 30 May 2000 16:45:42 -0400 |
>Date: Tue, 30 May 2000 11:08:36 +0100 >From: Mark Lynch <Mark.Lynch@xxxxxxxxxxxxxxx> >Subject: XHTML to WML problem > >Hi all, >I want to convert an XHTML document to WML and deliver it to a WAP device. >However there is a limitation on the amount of information that can be sent >down to the WAP device - on Nokia 7110 I thinks its about 1.4Kb. I use XSLT >to convert to WML. I then need to break down this file into 1.4Kb chunks. >Has anybody out there done anything like this? A related problem which _may_ be helpful...in Ch 19 of "Professional JSP" (Wrox, just out at http://www.amazon.com/exec/obidos/ASIN/1861003625) you'll see one way of emergency-pruning of XSL output for WML limits. (The chapter is "Case Study: Weather with JSP, XSLT, and WAP", fwiw.) For instance, on page 682 there's <xsl:value-of select="pruner:prune($theSessionID,string($Zip),$Plim)"/> which turns out to mean "try to produce the zip code as pulled from the last database query of this httpSession, but don't go past a total of $Plim output characters since the last reset (which happens once per request). Notice that here we're pruning content, not tags, all tags are always produced; the actual output content will depend on the order of XSL evaluation, but correctness will not. (public class XSLPrune is on pp674-675; it's not complicated.) If you have trouble with it, tell me :-) 'cos my co-author, Sasha Nakhimovsky, isn't on this list. (Nor is he on the amazon list of authors; they always mess up somewhere.) BTW, I've since learned how to do the XSL much better, but not in any way that affects the pruning issue. It does work, but I would love to see a simpler approach, and I don't know how it would apply to your problem; not directly, of course. I suspect that the best approach to your problem is going to depend on the specifics of the problem; feel free to post more details. :-) Tom Myers XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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