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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Re: xslt 3.0 possible feature - some sort of coll Play the video Subject: Re: Re: xslt 3.0 possible feature - some sort of collection to help when streaming From: Michael Kay <mike@xxxxxxxxxxxx> Date: Fri, 11 Mar 2011 08:42:09 +0000 On 11/03/2011 07:08, Vladimir Nesterovsky wrote: xsl:iterate works but it's limited to a single level of iteration, as this way one cannot easily collect output from nested transformations. Yes, that's correct. The use case for a single recursive tree walk of the input that delivers multiple results was one that the WG found particularly taxing; we tried many different design approaches. The solution currently in the spec (but not yet implemented) is xsl:fork, which essentially allows you to do several traversals of the input tree "in parallel", each delivering a separate result. This could be implemented using multiple threads but it doesn't have to be; the key idea is that there are several activities/processes listening to the same stream of events during a single pass of the input. (I'd love to have a language with native coroutine support for implementing this.) The results of each activity/process (other than the first) will typically need to be buffered in memory so they can be assembled in the right order in the result tree at the end of the input scan - unless of course each activity writes to a different destination using xsl:result-document. Michael Kay Saxonica Current Thread xslt 3.0 possible feature - some sort of collection to help when streaming Andrew Welch - 10 Mar 2011 18:28:28 -0000 Wendell Piez - 10 Mar 2011 20:03:11 -0000 Michael Kay - 11 Mar 2011 00:14:32 -0000 Vladimir Nesterovsky - 11 Mar 2011 07:07:14 -0000 Michael Kay - 11 Mar 2011 08:42:25 -0000 <= Andrew Welch - 11 Mar 2011 09:32:00 -0000 Michael Kay - 11 Mar 2011 10:23:48 -0000 Vladimir Nesterovsky - 11 Mar 2011 16:00:07 -0000 <- Previous Index Next -> Re: xslt 3.0 possible feature, Vladimir Nesterovsky Thread Re: Re: xslt 3.0 possible fea, Andrew Welch Re: xslt 3.0 possible feature, Vladimir Nesterovsky Date Re: Re: xslt 3.0 possible fea, Andrew Welch Month

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