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[xsl] Returning item type of variable (problems with maps)
Subject: [xsl] Returning item type of variable (problems with maps) From: David Rudel <fwqhgads@xxxxxxxxx> Date: Wed, 26 Mar 2014 23:57:30 +0100 |
Is there a simple way to report the type of a variable for de-bugging purposes? In particular, I'm looking for a way to report the function signature of a map because I'm getting an error that is very difficult for me to be debug otherwise. Here is what I have: <xsl:variable name="daily.fact.map" as="map(xs:date,map(xs:string,xs:string*))"> <xsl:map> Inside this function, there is an iterate instruction that spits out... <xsl:variable name="putative.map" as="map(xs:string,xs:string*)"> <xsl:map> <xsl:for-each-group select="map:keys($fact.state.map)" group-by="$list.map($fact.state.map(.))"> <xsl:map-entry key="current-grouping-key()" select="current-group()"/> </xsl:for-each-group> </xsl:map> </xsl:variable> <xsl:map-entry key="xs:date($date)"> <xsl:sequence select="$putative.map"/> </xsl:map-entry> .... </xsl:map> </xsl:variable> I am getting the error message XTTE0570: Required item type of value of variable $daily.fact.map is (map(xs:date, (map(xs:string, xs:string*)) This is not very helpful in terms of telling me what is going wrong. I'd like to have the processor tell me what type of item it thinks is being produced for $daily.fact.map is so I could figure out what is the problem. Note that, based on the definitions of the other maps, I don't understand how there can be a problem: <xsl:param name="fact.state.map" select="map:new()" as="map(xs:string,xs:string)"/> <xsl:variable name="list.map" as="map(xs:string,xs:string+)"> And since $putative.map is of required-type map(xs:string,xs:string*) and is not flagged as an error, and xs:date($date) is not being flagged as an error, then how can the <xsl:map-entry> instruction be producing the wrong item type? -David -- "A false conclusion, once arrived at and widely accepted is not dislodged easily, and the less it is understood, the more tenaciously it is held." - Cantor's Law of Preservation of Ignorance.
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