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AW: getting all nodes from a certain level in the xml hierarchy

2002-09-27 03:14:52
Yes, I need a HTML table with just one row.
All nodes of the same level are in one <td>, seperated by <br/>.


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Von: owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
[mailto:owner-xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com]Im Auftrag von 
Martin
Lormes
Gesendet: Freitag, 27. September 2002 11:38
An: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Betreff: Re: [xsl] getting all nodes from a certain level in the xml
hierarchy


my problem is the following:
my XML document maps the structure of a folder tree (just like the unix
file
hierarchy) but without files, e.g.:

<Folder NAME="/">
  <Folder NAME="a"/>
  <Folder NAME="b">
    <Folder NAME="ba"/>
    <Folder NAME="bb"/>
  </Folder>
  ...
  <Folder NAME="z">
    <Folder NAME="za">
...
                <Folder NAME="very deep folder"/>
      ...
    </Folder>
  </Folder
</Folder>

The real folder NAMEs are like real folder names, and have no specific
length or content.
The depth of the deepest node is unknown.

I need to access all nodes that have the same depth.
So first i need root, then all direct childs of root, then all nodes that
are two levels under root, because i want tu put them in a table like:

level | 0 |  1  |  2   ...         x
------+---+-----+------     ---------------
      | / |  a  |  ba       very deep folder
      |   |  b  |  bb
            ...
      |   |  z  |  za

first I started to try <xsl:for-each select="//Folder"> and then
<xsl:for-each select="//Folder/Folder"> but because I do not know the
depth
of the tree, this won't work..

Another reason, why this wouldn't work: "//Folder" selects all folders at
any tree level. "//Folder/Folder selects alls folders which have a parent
folder.

Can anybody help me, what is the direction i should go?
I don't think there is an easy way to use XPath for adressing nodes on the
same level?

In General "/*/*/*/*" selects all nodes at the fourth level, for instance.

However I can't yet think of a single transformation that could possibly
yield such a list. Do you really want text-output? Or do you want an HTML
table? If it helps to have an intermediate document containing a simple list
of Folders with their level in an attribute value, you can use:

<xsl:for-each select="//Folder">
<Folder NAME="{(_at_)NAME}" LEVEL="{count(ancestor::*)}"/>
</xsl:for-each>

It should be rather easy to build your table from this intermediate
structure.


Martin Lormes



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