[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Didier's lab report
Hi Curt, Curt said: It should be possible for an XSLT implementation to use asynchronous retrieval of document() using variables. Say, if you had something like this <xsl:transform ....> <xsl:variable name="doc1" select="document('doc1.xml',.)"/> <xsl:variable name="doc2" select="document('doc2.xml',.)"/> <xsl:variable name="doc3" select="document('doc3.xml',.)"/> <xsl:template match="/"> <xsl:apply-templates/> </xsl:template> ... </xsl:transform> The declaration of the variable could start the download/parsing process but not block further execution. Only when the variable was used in an expression would the template evaluation thread need to block. I do not know if any of the existing processors implement this type of behavior, however it would not seem to require any changes to XSLT to approach the performance that you estimated for XInclude. Didier replies: If I understand you well, this would imply first that we are allowed to use as a variable an external document tree. Then, if the XSLT processor recognizes that the select is a document() function, that the XSLT processor starts a thread to set the variable to a tree (will take as much time as the external server will take to return the resulting document). After having started a thread, the XSLT engine would go to the next variable assignment. Cheers Didier PH Martin ---------------------------------------------- Email: martind@n... Conferences: xml devconf 2000 (http://www.xmldevconf2000.com) Book: XML Professional (http://www.wrox.com) column: Style Matters (http://www.xml.com) Products: http://www.netfolder.com
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