RE: [xsl] Accessing attribute in a variable with conditional value

["Michael Kay" <mike@xxxxxxxxxxxx>]

Options:

(a) use XSLT 2.0

(b) failing that, use the xx:node-set() extension in 1.0

(c) get the value of the base attribute in both branches:

>       <xsl:variable name="validAttributeTypeBase">
>          <xsl:if test="key('allTypes', @type)">
>             <xsl:copy-of select="key('allTypes',
@type)/xsd:restriction/@base"/>
>          </xsl:if>
>          <xsl:if test="xsd:simpleType"
>             <xsl:copy-of select="xsd:simpleType/xsd:restriction/@base"/>
>          </xsl:if>
>       </xsl:variable>

(are they mutually exclusive, by the way?)

(d) use a union:

<xsl:variable name="validAttributeTypeBase"
  select="key('allTypes', @type)/xsd:restriction |
xsd:simpleType/xsd:restriction"/>

Option (d) was the last one I thought of but it seems to be the best choice.

Michael Kay
http://www.saxonica.com/

 

> -----Original Message-----
> From: Wasiq Shaikh [mailto:wasiq911@xxxxxxxxxxx] 
> Sent: 01 August 2007 18:41
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Accessing attribute in a variable with 
> conditional value
> 
> Hi,
> 
> I'm setting a value on a variable using conditions. The 
> variable must be a node-set so that I can do some processing with it.
> 
>       <xsl:variable name="validAttributeType">
>          <xsl:if test="key('allTypes', @type)">
>             <xsl:copy-of select="key('allTypes', 
> @type)/xsd:restriction"/>
>          </xsl:if>
>          <xsl:if test="xsd:simpleType"
>             <xsl:copy-of select="xsd:simpleType/xsd:restriction"/>
>          </xsl:if>
>       </xsl:variable>
> 
> The "xsd:restriction" tag has a "base" attribute that I need 
> to access and send to a template as a parameter.
> 
>             <xsl:call-template name="trimAttribute">
>                <xsl:with-param name="attributeName" select="'base'"/>
>                <xsl:with-param name="attribute" 
> select="$validAttributeType/@base"/>
>             </xsl:call-template>
> 
> But it gives me a "XSLT Error 
> (javax.xml.transform.TransformerException): 
> org.apache.xpath.objects.XRTreeFrag" when I try to do
> 
> <xsl:with-param name="attribute" select="$validAttributeType/@base"/>
> OR
> <xsl:with-param name="attribute"><xsl:copy-of 
> select="$validAttributeType/@base"/></xsl:with-param>
> 
> I can print out the variable's contents, which is correct, 
> but I can't seem to access the attribute. By the way, 
> previously I had this
> 
> <xsl:variable name="validAttributeType" 
> select="key('allTypes', @type)/xsd:restriction"/>
> 
> which works! But adding the conditional messed it up. How can 
> I get the same behaviour as the above line in a conditional variable?
> 
> I appreciate any help. Thank you!
> 
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