Recursive Loop in XSLT file

dhrumil · March 29th, 2010, 02:49 PM

Respected Sir,

I want to put recursive loop in my XSLT file. The recursive loop is similar to for loop in C or C++.

This recursive loop is used to display some values upto limit of that loop.

So, How can i put the recursive loop in XSLT file.

Regards/Thanks,
Dhrumil Shah.

mhkay · March 29th, 2010, 02:56 PM

Please show an example of the input XML, and the output you want to produce. It would also be useful to say whether you are using XSLT 1.0 or 2.0.

mhkay · March 29th, 2010, 04:49 PM

I asked for three things:

Please show (1) an example of the input XML, and (2) the output you want to produce. It would also be useful to say (3) whether you are using XSLT 1.0 or 2.0.

You've provided the first, could we please have the other two?

The reason that your code is badly formatted, by the way, is that you didn't read the instructions above the edit box: use [ code ] and [ / code ] before and after code to format it properly.

dhrumil · March 30th, 2010, 01:06 AM

Code:

<?xml version="1.0"?>
<?xml-stylesheet href='newCSS.XSL' type='text/xsl'?>
<Lineage>
   <sample_001>
      <time>06:03:09.750000</time>
      <date>2009/05/26</date>
      <X>4025.0784</X>
      <Y>4488.9818</Y>
      <Z>3925.5985</Z>
      <X1>3.6739</X1>
      <Y1>2.0819</Y1>
      <Z1>+6.1319</Z1>
      <R>0.0015</R>
      <P>+0.0035</P>
      <Ya>3.2564</Ya>
      <side_angle>334.7379</side_angle>
   </sample_001>
   <sample_002>
        <time>06:03:09.875000</time>
        <date>2009-05-26</date>
        <X>4025.5376</X>
        <Y>4489.2420</Y>
        <Z>3924.8320</Z>
         <X1>3.6734</X1>
        <Y1>2.0813</Y1>
       <Z1>-6.1324</Z1>
       <R>0.0015</R>
        <P>-0.0035</P>
        <Ya>3.2567</Ya>
        <side_angle>334.7384</side_angle>
    </sample_002>
    <sample_003>
        <time>06:03:10.000000</time>
        <date>2009-05-26</date>
        <X>4025.9967</X>
        <Y>4489.5021</Y>
        <Z>3924.0654</Z>
        <X1>3.6728</X1>
        <Y1>2.0807</Y1>
        <Z1>-6.1329</Z1>
        <R>0.0015</R>
         <P>-0.0034</P>
         <Ya>3.2570</Ya>
        <side_angle>334.7389</side_angle>
    </sample_003>
    <sample_004>
        <time>06:03:10.125000</time>
        <date>2009-05-26</date>
         <X>4026.4558</X>
        <Y>4489.7622</Y>
        <Z>3923.2987</Z>
        <X1>3.6723</X1>
        <Y1>2.0801</Y1>
        <Z1>-6.1335</Z1>
        <R>0.0015</R>
         <P>-0.0034</P>
         <Ya>3.2572</Ya>
        <side_angle>334.7394</side_angle>
    </sample_004>
    <sample_005>
         <time>06:03:10.250000</time>
         <date>2009-05-26</date>
        <X>4026.9148</X>
        <Y>4490.0222</Y>
       <Z>3922.5320</Z>
        <X1>3.6717</X1>
        <Y1>2.0795</Y1>
        <Z1>-6.1340</Z1>
        <R>0.0015</R>
        <P>-0.0034</P>
        <Ya>3.2575</Ya>
        <side_angle>334.7400</side_angle>
    </sample_005>
    <sample_006>
         <time>06:03:10.375000</time>
         <date>2009-05-26</date>
         <X>4027.3737</X>
         <Y>4490.2821</Y>
         <Z>3921.7652</Z>
         <X1>3.6712</X1>
         <Y1>2.0789</Y1>
         <Z1>-6.1345</Z1>
         <R>0.0015</R>
         <P>-0.0034</P>
         <Ya>3.2578</Ya>
         <side_angle>334.7405</side_angle>
    </sample_006>
    <sample_007>
          <time>06:03:10.500000</time>
          <date>2009-05-26</date>
          <X>4027.8326</X>
          <Y>4490.5419</Y>
          <Z>3920.9984</Z>
          <X1>3.6707</X1>
          <Y1>2.0783</Y1>
          <Z1>-6.1350</Z1>
          <R>0.0015</R>
          <P>-0.0034</P>
          <Ya>3.2581</Ya>
          <side_angle>334.7410</side_angle>
     </sample_007>
     <sample_008>
           <time>06:03:10.625000</time>
           <date>2009-05-26</date>
           <X>4028.2914</X>
           <Y>4490.8017</Y>
           <Z>3920.2314</Z>
           <X1>3.6701</X1>
           <Y1>2.0777</Y1>
           <Z1>-6.1356</Z1>
           <R>0.0015</R>
           <P>-0.0034</P>
           <Ya>3.2583</Ya>
           <side_angle>334.7415</side_angle>
     </sample_008>
     <sample_009>
           <time>06:03:10.750000</time>
           <date>2009-05-26</date>
          <X>4028.7502</X>
         <Y>4491.0614</Y>
         <Z>3919.4645</Z>
         <X1>3.6696</X1>
         <Y1>2.0771</Y1>
         <Z1>-6.1361</Z1>
         <R>0.0015</R>
         <P>-0.0034</P>
         <Ya>3.2586</Ya>
         <side_angle>334.7420</side_angle>
    </sample_009>
    <sample_010>
          <time>06:03:10.875000</time>
         <date>2009-05-26</date>
         <X>4029.2088</X>
         <Y>4491.3210</Y>
         <Z>3918.6974</Z>
         <X1>3.6690</X1>
         <Y1>2.0765</Y1>
         <Z1>-6.1366</Z1>
         <R>0.0015</R>
         <P>-0.0034</P>
         <Ya>3.2589</Ya>
         <side_angle>334.7426</side_angle>
     </sample_010>
</Lineage>

Now sir you can see that I use one tag Lineage and in that tag there are sub tags like sample_001, sample_002 n ...

I want to use recursive loop for these 10 samples and want to display it in a tabular format. That means if there are 10 values so the loop goes for 10 times. If there 200 values than the loop goes for 200 times. Give me the suggestion.

I want the output like this way.

Samples No. Time Date X Y Z X1 Y1 Z1 R P Ya Side Angle
1
2
.
.
.
10

So this is my output table.

mrame · March 30th, 2010, 02:51 AM

Try the below:

Code:

<xsl:template match="Lineage">
<html><body>
<table border="1">
<tr><td>Samples No.</td><td>Time</td><td>Date</td><td>X</td><td>Y</td><td>Z</td><td>X1</td><td>Y1</td><td>Z1</td><td>R</td><td>P</td><td>Ya</td><td>Side Angle</td></tr>
<xsl:for-each select="*">
<tr>
<td><xsl:value-of select="position()"/></td>
<xsl:for-each select="*">
<td><xsl:value-of select="."/></td>
</xsl:for-each>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>

mhkay · March 30th, 2010, 03:56 AM

"I want to use recursive loop".

The answer from mrame is good. I was puzzled as to why you would want to use recursion here. I suspect you are using the word "recursive" incorrectly. Recursion is a powerful technique - having functions or templates that call themselves - and it is often useful in XSLT. But it's not needed for a simple problem like this, where xsl:for-each is quite adequate.

It's not just a problem with vocabulary, though. When you ask a question on a forum like this, it's generally best to explain the problem you want to solve, and not to focus on the technique you want to use to solve it. The people answering the question will know what technique is most appropriate, and it might not be one you thought of.

dhrumil · March 31st, 2010, 01:50 PM

Respected to all,

Thank you for advising me. I gone through every line of the file but i do not understand what this line says. The line is
<td><xsl:value-of select="position()"/></td>

Sir, Can you please explain what the position() method do in this file?

Regards/Thanks,
Dhrumil

Martin Honnen · March 31st, 2010, 01:58 PM

The outer for-each processes all child elements of the "Lineage" element. And then xsl:value-of select="position()" outputs the position of each child element in the list of all child elements, starting with position 1. So it outputs 1, 2, 3, and so on to the position of the last child element.

dhrumil · April 1st, 2010, 01:02 AM

Respected Sir,

Thank you sir for explanation but in this there is an error of undefined Postition() method.

Regards/Thanks,
Dhrumil

mrame · April 1st, 2010, 01:07 AM

Can you post the whole error text.