Re: [xsl] extracting and removing an element nested at different levels

["Mark" <mark@xxxxxxxxxxxx>]

Hi Gerrit,
Thanks for your suggestion. Both worked perfectly for me and produced 
identical results. Is there any advantage in using one technique rather than 
the other?
Mark

-----Original Message----- 
From: Imsieke, Gerrit, le-tex
Sent: Tuesday, September 04, 2012 3:24 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] extracting and removing an element nested at different 
levels

Two possible solutions using identity templates. The first one uses a
dedicated mode for the nested items:

  <xsl:template match="List">
    <xsl:copy>
      <xsl:apply-templates select=".//Item"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="Item">
    <xsl:copy>
      <xsl:apply-templates mode="suppress-item"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="Item" mode="suppress-item" />

  <xsl:template match="* | @*" mode="#all">
    <xsl:copy>
      <xsl:apply-templates select="@*, node()" mode="#current"/>
    </xsl:copy>
  </xsl:template>

Second solution, single mode, for-each, identity template:

  <xsl:template match="List">
    <xsl:copy>
      <xsl:for-each select=".//Item">
        <xsl:copy>
          <xsl:apply-templates/>
        </xsl:copy>
      </xsl:for-each>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="Item" />

  <xsl:template match="* | @*">
    <xsl:copy>
      <xsl:apply-templates select="@*, node()" mode="#current"/>
    </xsl:copy>
  </xsl:template>

Both wont leave an empty ElementA though because of the contained text
nodes.

And both wont process nested Lists in Items.

Gerrit





On 2012-09-04 23:56, Mark wrote:
> I have XML consisting of <Item> elements that have nested <Item>
> elements at various depths within the tree, in its simplest form
> something like:
>
> <List>
>     <Item>
>         <ElementA>
>             <Item>
>                 <ElementB/>
>             </Item>
>         </ElementA>
>     </Item>
> </List>
>
> That I want to render as:
>
> <List>
>     <Item>
>         <ElementA/>
>     </Item>
>     <Item>
>         <ElementB/>
>     </Item>
> </List>
>
> Is there a general technique I can use to remove nested <Item> elements
> whatever their depth and place all <Item> elements at the same level
> within the <List>?
> Thanks,
> Mark

--
Gerrit Imsieke
Geschdftsf|hrer / Managing Director
le-tex publishing services GmbH
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Phone +49 341 355356 110, Fax +49 341 355356 510
gerrit.imsieke@xxxxxxxxx, http://www.le-tex.de

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