How to select the grandparent of a node using xslt

Question

I'm in a situation where I can only test for the child node, but I have to apply tags to the grandparent of this child node.

I've tried using:

<xsl:call-template name="grandparent" select="parent::parent::node()"/>

and:

<xsl:call-template name="grandparent" select="ancestor::node [@nameofgrandparentnode]"/>

But neither works.

The level of the grandparent node is not fixed, so I figure I can't use [@level=#] either. Any ideas on how to select it would be greatly appreciated.

EDIT: -- This part has been posted as a new question:

http://stackoverflow.com/questions/3687466/xslt-select-grandparent-node-depending-on-an-attribute-value-of-its-grandchild-no

Selecting the node using the suggestions from below worked. Thanks! However I also need to test by the attribute of the grandparent or grandchild node.

I've tried:

<xsl:template name"one" match="grandparentnode">
 <Tag1>
  <xsl:apply-templates select="parentNode" />
 </Tag1>
</xsl:template>

<xsl:template name="two" match="grandparentnode[*/*/@grandchildattr='attrValue']">
 <Tag2>
     <xsl:apply-templates select="parentNode" />
 </Tag2>
</xsl:template>

However template "two" always gets called, and "" is always inserted. Even for grandchild nodes whose attribute value is not equal to 'attrValue'.

Am I missing something here?

Answer 1

I've tried using:

<xsl:call-template name="grandparent"

select="parent::parent::node()"/>

and:

<xsl:call-template name="grandparent"

select="ancestor::node [@nameofgrandparentnode]"/>

But neither works.

Certainly it will not "work", because the <xsl:call-template> instruction doesn't have a select attribute!

You may pass parameters using <xsl:with-param> children of the <xsl:call-template> instruction, like this:

<xsl:call-template name="compute">
  <xsl:param name="pAncestor" select="someExpression"/>
</xsl:call-template>

For the select attribute of the <xsl:with-param> Use:

For a real grandparent:

../..

for the closest ancestor element with name someName:

ancestor::someName[1]

for the closest ancestor element with name contained in the variable $ancName:

ancestor::*[name()=$ancName][1]