Increment/decrement a variable in XSL

Hi All,

  I have written the files to compare two xml files contents, if the answer
is correct count it.

CompareFile.xml which loads user.xml and admin.xml.

 I am trying to compare user.xml (User entered Answers)  with admin.xml
 (Correct Answers).

 Getting problem in comparing each element and increment the number if the
 answer is correct.

 Is it possible to declare a variable globally and assign the value some
other
 place ?  For displaying the count ie Correct Answers at the end.


The files are as follows :

admin.xml:-

<?xml version="1.0" encoding="UTF-8"?>

<subjects>
 <subject>
  <no>1</no>
  <answer>Object Oriented</answer>
 </subject>
 <subject>
  <no>2</no>
  <answer>staticc</answer>
 </subject>
 <subject>
  <no>3</no>
  <answer>answer3</answer>
 </subject>
 <subject>
  <no>4</no>
  <answer>answer4</answer>
 </subject>
</subjects>
------------------------------------
user.xml:-

<?xml version="1.0" encoding="UTF-8"?>

<subjects>
 <subject>
  <no>1</no> <answer>Object Oriented</answer>
 </subject>
 <subject>
  <no>2</no> <answer>static</answer>
 </subject>
 <subject>
  <no>3</no> <answer>answer3</answer>
 </subject>
 <subject>
  <no>4</no> <answer>answer4</answer>
 </subject>
</subjects>
----------------------------------------
CompareFiles.xml:-

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="CompareFiles.xsl"?>

<files>
  <file href="user.xml" />
  <file href="admin.xml" />
</files>
-----------------------------------------
CompareFiles.xsl:-

<?xml version="1.0"?>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">

  <xsl:output method="html" />


     <xsl:template match="/">
   <xsl:variable name="user" select="document(/files/file[1]/@href, /)" />
   <xsl:variable name="admin" select="document(/files/file[2]/@href, /)" />

       <xsl:text>user contents</xsl:text> <br />
       <xsl:value-of select="$user" /> <br /> <br />

       <xsl:text>admin contents</xsl:text> <br />
       <xsl:value-of select="$admin" /> <br /><br />


    <xsl:if test="normalize-space($user/subjects/subject/no) =
normalize-space($admin/subjects/subject/no)">

      Both nos are equal <br />
      <xsl:value-of select="$user/subjects/subject/no" />  <br />

     <xsl:choose>

      <xsl:when test="normalize-space($user/subjects/subject/answer) =
normalize-space($admin/subjects/subject/answer)">


        Answer is matched <br /> <br />

        User Ans: <xsl:value-of select="$user/subjects/subject/answer" />
<br />
        Admin Ans:

       <xsl:variable name="CorrectAnswers">

        <xsl:value-of select="count($admin/subjects/subject/answer)" /> <br
/>

       </xsl:variable>

       No of Correct Answers: <xsl:value-of select="$CorrectAnswers" /> <br
/>


      </xsl:when>

      <xsl:otherwise>

        Answer is not matching <br /> <br />

        User Ans: <xsl:value-of select="$user/subjects/subject/answer" />
<br />
        Admin Ans: <xsl:value-of select="$admin/subjects/subject/answer" />
<br />

      </xsl:otherwise>

     </xsl:choose>

       </xsl:if>

     </xsl:template>

</xsl:stylesheet>

----------------------------------

Does anyone has idea how to solve this ?

Thanx in advance.

Zulfakhar



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