Re: [xsl] <xsl:for-each>

["J.Pietschmann" <j3322ptm@xxxxxxxx>]

Dung, Ming-tzung wrote:
> Hi,
>     I wonder whether the XSLT has the instruction like the "break" statement
> in C/Java language inside the loop. If no such instruction, any design idiom
> can solve this problem?   Thanks in advance!!

You have to get rid of the habit of viewing xsl:for-each
as being a loop. It is not a loop. Think of it as a statement
which applies a function to each element of a list (or an
array), in parallel.
Because it's not a loop, you can't break out of it. Instead
you have to construct the correct list of nodes you want to
apply the for-each body to right at the beginning.

Instead of
 for( d in data) {
   if( d.total > max ) {
     break;
   }
   do-stuff;
 }

you have to select the right node set (which is not trivial
in this case):
  <xsl:for-each select="data[total &gt; $max][1]/preceding-sibling::data">
    <stuff/>
  </xsl:for-each>
In most cases, selecting the correct set of nodes
is much easier.

HTH
J.Pietschmann


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