Subject: [xsl] Key error: the context item is undefined From: drkm <darkman_spam@xxxxxxxx> Date: Mon, 12 Dec 2005 19:45:06 +0100 (CET) |
Hi I have a problem using a key. I have an XPath function that can deal with elements that are identifiers for other elements. In such a case, the function uses a key to retreive the effective element (corresponding to the id). Saxon-SA 8.6.1 give me the following error message: Error on line 13 of ~/drafts/key-wo-context.xsl: XPDY0002: Cannot select a node here: the context item is undefined While I think I understand mostly what it means, I can't find a way to do what I want. Below is a minimal example that reproduce the error: ~/drafts $ cat key-wo-context.xsl <xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:foo="..." version="2.0"> <xsl:output method="text"/> <xsl:key name="by.id" match="item" use="id"/> <xsl:function name="foo:do.it"> <xsl:param name="obj"/> <xsl:choose> <xsl:when test="$obj/@idref"> <xsl:value-of select="foo:do.it(key('by.id', $obj/@idref))"/> </xsl:when> <xsl:otherwise> <xsl:value-of select="."/> </xsl:otherwise> </xsl:choose> </xsl:function> <xsl:template match="/"> <xsl:value-of select="*[1]/*"/> </xsl:template> </xsl:transform> ~/drafts $ cat key-wo-context.xml <root> <item id="a">A</item> <item id="b">B</item> <item idref="b"/> <item id="c">C</item> <item idref="c"/> <item idref="a"/> <item id="d">D</item> </root> ~/drafts $ saxon key-wo-context.xml key-wo-context.xsl Error on line 13 of ~/drafts/key-wo-context.xsl: XPDY0002: Cannot select a node here: the context item is undefined Failed to compile stylesheet. 1 error detected. Do you have any idea? Thanks, --drkm ___________________________________________________________________________ Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger Tilichargez cette version sur http://fr.messenger.yahoo.com
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