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Re: strong typed variable with restriction ?

Subject: Re: strong typed variable with restriction ?
From: Martin Honnen <Martin.Honnen@xxxxxx>
Date: Wed, 02 Feb 2011 11:48:12 +0100
Re:  strong typed variable with restriction ?
Andrew Welch wrote:
On 2 February 2011 10:16, Matthieu Ricaud-Dussarget
<matthieu.ricaud@xxxxxxxxx>  wrote:

My code looks like :
<xsl:function name="igs:get-css-rule" as="element()">
<xsl:param name="foobar" as="xs:string"/>  <!--(foo|bar)-->
<xsl:choose>
<xsl:when test="$foobar='foo'">
<xsl:sequence select="igs:get-my-foo-item()"/>
</xsl:when>
<xsl:when test="$css='bar'">
<xsl:sequence select="igs:get-my-bar-item()"/>
</xsl:when>
</xsl:choose>
</xsl:function>

And I get such a parsing  error on my xslt :
  XTTE0570: Conditional expression: If none of the conditions is satisfied,
an empty

You get the error because you must have an xsl:otherwise, you can't just have xsl:whens.

I am confused, http://www.w3.org/TR/xslt20/#xsl-choose says


<xsl:choose>
  <!-- Content: (xsl:when+, xsl:otherwise?) -->
</xsl:choose>

so in general the xsl:otherwise is optional.

So why is the xsl:otherwise required in the above case, to ensure the result type of the function?



--

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/

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