Hi Andrey,
1 - root element
2 1 - root, menu
3 2 - root, menu, menuitem "2"
5 3 - root, menu, menuitem "3", menuitem "3.4" and what???
and menuitem "3.6"?
<xsl:for-each select="child::menuitem">
<tr><td><xsl:value-of select="count(.//ancestor::*)"/></td><td>
<xsl:value-of select="@title"/></td></tr>
</xsl:for-each>
In this context, './/' means 'descendant-or-self::*', right? (I'm not
sure, the use of '//' still confuses me a bit). But it explains the output:
menuitem 1:
- descendant-or-self::* contains 1 node.
- that node has 2 ancestors (at least, if the <menu> element is the
child of a root element): root and menu.
menuitem 2:
- descendant-or-self::* contains 2 nodes (menuitem 2 and 2.1).
- that set has 3 ancestors: root, menu and menuitem 2
menuitem 3:
- descendant-or-self::* contains 11 nodes (menuitem 3 and all its
descendants).
- count(.//ancestor::*) counts the ancestors within these 11 nodes, and
that includes menuitem 3.6 (because that one has children too) so that's 5
Cheers,
Anton
Andrey V. Elsukov wrote:
Hi,
I have some XML file, for example:
=======
<menu>
<menuitem title="1"/>
<menuitem title="2">
<menuitem title="2.1"/>
</menuitem>
<menuitem title="3">
<menuitem title="3.1"/>
<menuitem title="3.2"/>
<menuitem title="3.3"/>
<menuitem title="3.4">
<menuitem title="3.4.1"/>
<menuitem title="3.4.2"/>
</menuitem>
<menuitem title="3.5"/>
<menuitem title="3.6">
<menuitem title="3.6.1"/>
<menuitem title="3.6.2"/>
</menuitem>
</menuitem>
</menu>
======
and XLS transform:
======
<xsl:template match="menu">
<table class="menu">
<tr><td><xsl:value-of select="count(ancestor::*)"/></td><td> </td></tr>
<xsl:for-each select="child::menuitem">
<tr><td><xsl:value-of select="count(.//ancestor::*)"/></td><td>
<xsl:value-of select="@title"/></td></tr>
</xsl:for-each>
</table>
</xsl:template>
======
In result the following:
======
1 - root element
2 1 - root, menu
3 2 - root, menu, menuitem "2"
5 3 - root, menu, menuitem "3", menuitem "3.4" and what???
======
http://www.w3.org/TR/1999/REC-xpath-19991116 :
* the ancestor axis contains the ancestors of the context node;
the ancestors of the context node consist of the parent of context
node and the parent's parent and so on;..
* Function: number count(node-set)
The count function returns the number of nodes in the argument node-set.
======
Why the result is 5? It should be equal 4, or not?
PS. I use Perl-5.8.5 + LibXML + LibXSLT..
--
Best regards,
Andrey V. Elsukov