Re: [xsl] Slow XSLT

[Cleyton Jordan <cleytonjordan@xxxxxxxxxxx>]

Hi David,

Many thanks for your reply.

Sorry, I should have included you in my previous post
to Michael but there you go again. Is this explanation
clearer?

For each Row in my xml I need to output a <tr>. So I
apply templates. 

<xsl:variable name=set" select="Report/Rows//Row" />
.....
 <xsl:apply-templates select="$set"/>
.....

For each Cell within the current Row that is in the
node set I need to apply the Cell template to output
the necessary <td>s

<xsl:template name="Row">
......
<tr>
 <xsl:param name="set"/>
  <xsl:apply-templates select="$set[postion()]/*"/>
</tr>
<xsl:template>

<xsl:template name="Cell">
  When test Msr
   for each Msr
   <td> 
     <xsl:value-of select="@val" />
   </td>
  Otherwise
   For each Measure
    <td>&nbsp;</td>
<xsl:template>

However, if I do this - <xsl:apply-templates
select="$set/*"/> - I will apply templates to all the
Cell elements regardeless of the Row they belong to.
So I will have only one <tr> with lots of <td>s.
Something like that:

<tr>
<td></td> 
<td></td> 
<td></td> 
<td></td> 
<td></td> 
<td></td> 
<td></td> 
<td></td> 
</tr>

However, the output I need according to my xml below
is this:

<tr>
 <td>10</td> 
 <td>15</td> 
 <td>&nbsp;</td> 
 <td>&nbsp;</td>
</tr>
<tr> 
 <td>&nbsp;</td> 
 <td>&nbsp;</td>
 <td>45</td> 
 <td>34</td>
 <td>123</td> 
 <td>19</td> 
</tr> 

XML

<Report xmlns="">
  <Measures>
    <Measure idx="1" heading="Total Pages" />
    <Measure idx="2" heading="Cost" />
  </Measures>
  <Rows>
   <RowGrp>
    <Row heading="Name 1">
      <Cell>
        <Msr idx="1" val="10" />
        <Msr idx="2" val="15" />
      </Cell>
      <Cell/>
    <Row heading="Name 2">
      <Cell />
      <Cell>
        <Msr idx="1" val="45" />
        <Msr idx="2" val="34" />
      <Cell/>
      <Cell>
        <Msr idx="1" val="123" />
        <Msr idx="2" val="19" />
      <Cell/>
    </Row>
   </RowGrp>
  </Rows>
</Report>





--- David Carlisle <davidc@xxxxxxxxx> wrote:

> 
> 
> > <xsl:apply-templates select="$set[postion()]/*"/>
> 
> a numeric filter such as $set[1] is shorthand for
> the boolean filter
> $set[position()=1]
> so the above is shorthand fr
> <xsl:apply-templates
> select="$set[postion()=position()]/*"/>
> so as the test is always true it is the same as
> <xsl:apply-templates select="$set/*"/>
> 
> 
> > I need to apply templates to the child of the
> current
> > Row element that is in the $set node set. But the
> '.'
> xslt 1 doesn't have a direct test on node identity
> you can howerver
> > use, for example
> 
> select="*[count(.|$set)=count($set)]"
> 
> which selects all child elements that are in the set
> $set.
> 
> 
> > This XPATH works though:
> > 
> > <xsl:apply-templates select="./Cell"/>
>  ./ at the start of an xpath is redundent, so this
> is the same as
> 
> <xsl:apply-templates select="Cell"/>
> 
> and selects child Cell elements
> 
> 
> > How do I get the current context using a node set
> > variable?
> 
> You'd need to be clearer about what you mean here.
> . or current() will get the current context
> 
> perhaps 
> 
> select="Cell[count(.|$set)=count($set)]"
> 
> is what you need but I can't be sure from this
> description
> 
> 
> > I have created a node set of Rows:
> > 
> > <xsl:variable name=set" select="Report/Rows//Row"
> /> 
> 
> you probably don't want // there which causes a
> search to arbitrary
> depth looking for Row elements, but why do you need
> this variable 
> at all, rather than simply applying templates to the
> Row elements as
> they occur in the source?
> 
> It would seem that by 
> 
> 
> <xsl:template name="Row">
> <tr>
>  <xsl:param name="set"/>
>  <xsl:apply-templates select="$set[postion()]/*"/>
> </tr>
> <xsl:template>
> 
> 
> 
> you want to select the children of _this_ Row, but
> you don't need to do
> anything for that, just
> 
> 
> 
> <xsl:template name="Row">
> <tr>
>  <xsl:apply-templates/>
> </tr>
> <xsl:template>
> 
> would work fine wouldn't it?
> 
> David
> 
>
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