Subject: [xsl] Referring to imported variable's value in override From: "Christian Roth" <roth@xxxxxxxxxxxxxx> Date: Mon, 29 Mar 2010 17:37:28 +0200 |
Hello, can I use the value of an imported variable in its override definition? My current use-case is defining the value of a variable in a stylesheet customization layer as "all it already contains, plus those two items". Naively trying, I first came up with this: --main.xsl-- <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs" version="2.0"> <xsl:import href="sub.xsl" /> <!-- MAIN --> <xsl:variable name="test" select="$test, ('c','d')" /> <xsl:template match="/"> <xsl:message select="$test"/> </xsl:template> </xsl:stylesheet> --end-- --sub.xsl-- <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs" version="2.0"> <!-- SUB --> <xsl:variable name="test" select="('a','b')"/> </xsl:stylesheet> --end-- , thinking that the declaration of test in main would use the imported declaration from sub.xsl since the one in main.xsl does not yet exist at that position. However, this gives me circular reference error in main.xsl: SystemID: /Users/chris/Beruf/infinity-loop/testdata/feature-testing/ stylesheet-levels/main.xsl Severity: fatal Description: Circular definition of variable test Start location: 9:0 URL: http://www.w3.org/TR/xslt20/#err-XTDE0640 The desired output in the console would be --desired output-- a b c d --end-- How does one best tackle this? Maybe define the base variable with a different name, say, "test-base" in the imported stylesheet, so that there is no name-clash resp. override happening? How to do this when there are more customization layers to handle, each one wishing to refer to "what's already there"? Regards Christian
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