Subject: [xsl] Empty String param From: "Kerry, Richard" <richard.kerry@xxxxxxxxxxx> Date: Wed, 2 Apr 2008 15:21:25 +0100 |
I want to declare an xsl parameter which is a string, and may be empty when called. The system doesn't seem to allow me to do this. I'm using Saxon-9. I say <xsl:template name="insert"> <xsl:param name="default" /> <!-- various stuff using $default--> </xsl:template> And eventually I do <xsl:call-template name="insert"> <xsl:with-param name="default" select="$named-nodes[1]/@default" /> </xsl:call-template> So that I can get the value of default from an atribute in another document ($named-nodes). This attribute may be, and often is, absent. In which case I'd expect default to be an empty string. Which it is for this test. I get an error as follows : XTTE0570: An empty sequence is not allowed as the value of parameter $default. Referring to the xsl:with-param line. Why can't I pass in the empty string here ? (ie why is it telling me that an empty sequence (should be a string) is not allowed ?) I have tried adding as="xs:string" to the xsl:with-param and also to the xsl:param as I'd have thought that even though it may be the case that the processor would reject an empty node-set or sequence if I was passing one it should surely expect a string to be allowed to be empty. Richard Kerry Colledia Control Engineer Siemens IT Solutions and Services Ltd Room 457 Design Building, BBC Television Centre, Wood Lane, London, W12 7RJ T: +44 (0)20 82259063 F: +44 (0)20 8576 8182 M: +44 (0)7921 244993 Email: richard.kerry@xxxxxxxxxxx <blocked::mailto:richard.kerry@xxxxxxxxxxx> Website: www.siemens.co.uk/it-solutions <blocked::outbind://47/www.siemens.co.uk/it-solutions> This e-mail contains confidential information and is for the exclusive use of the addressee/s. If you are not the addressee, then any distribution, copying or use of this e-mail is prohibited. If received in error, please advise the sender and delete it immediately. We accept no liability for any loss or damage suffered by any person arising from use of this e-mail. Siemens IT Solutions and Services Limited Registered No: 1203466 England Registered Office: Faraday House, Sir William Siemens Square, Frimley, Camberley, GU16 8QD
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