how to write these validations

[vensip]

Hi,

I am trying to write a error log text file using xml as a data file and xsl as a validation file. attached are my input files. I stuckup in converting them.. please advice.
thanks in advance,
siva
below are my files information.

<?xml version="1.0" encoding="iso-8859-1"?>
<?xml-stylesheet type="text/xsl" href="Validations_Dummy.xsl"?>
<Project>
  <work>
  <row>
    <ChkDate>13252009</ChkDate>
    <ChkLength>alpha numaric with lengh</ChkLength>
    <ChkContains>one</ChkContains>
    <ChkNumber>800</ChkNumber>
  </row>
  <row>
    <ChkDate>3252009</ChkDate>
    <ChkLength>alpha numaric with lenghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh</ChkLength>
    <ChkContains>tingting</ChkContains>
    <ChkNumber>xyz</ChkNumber>
  </row>
  </work>
  <Prep>
    <ReportName>
      <RNValue>one</RNValue>
      <RNValue>two</RNValue>
      <RNValue>three</RNValue>
      <RNValue>four</RNValue>
    </ReportName>
  </Prep>
</Project>


<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text"/>
  
  <xsl:template match="/">
    <xsl:apply-templates/>
  </xsl:template>

  <xsl:template match="work">
    <xsl:apply-templates select="rowrow"/>
  </xsl:template>

  <xsl:template match="row"  name="rowrow">
    <xsl:apply-templates select="ChkDate"/>
    <xsl:apply-templates select="ChkLength"/>
    <xsl:apply-templates select="ChkContains"/>
    <xsl:apply-templates select="ChkNumber"/>
  </xsl:template>

  <xsl:template match="ChkDate">
    <xsl:call-template name="checkDate">
      <xsl:with-param name="theDate" select="current()"/>
    </xsl:call-template>
  </xsl:template>
  <xsl:template match="ChkLength">
    <xsl:call-template name="CheckLength">
      <xsl:with-param name="min" select="1"/>
      <xsl:with-param name="max" select="50"/>
      <xsl:with-param name="chkValue" select="current()"/>
    </xsl:call-template>
  </xsl:template>
  <xsl:template match="ChkContains">
    <xsl:call-template name="CheckContains">
      <xsl:with-param name="preDefNode" select="Project/Prep/ReportName"/>
      <xsl:with-param name="chkValue" select="current()"/>
    </xsl:call-template>
  </xsl:template>
  <xsl:template match="ChkNumber">
    <xsl:call-template name="CheckNumber">
      <xsl:with-param name="chkValue" select="current()"/>
    </xsl:call-template>
  </xsl:template>

  <!-- Predefined Templates for Validations-->
  <xsl:template name="CheckLength">
    <xsl:param name="min"/>
    <xsl:param name="max"/>
    <xsl:param name="chkValue"/>
    <xsl:choose>
      <xsl:when test="string-length($chkValue) &gt; $min and string-length($chkValue) &lt; $max">
        <xsl:text></xsl:text>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$chkValue"/>
        <xsl:text>~Length is not in Range&#xa;</xsl:text>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <xsl:template name="CheckNumber">
    <xsl:param name="chkValue"/>
    <xsl:choose>
      <xsl:when test="not(number($chkValue))">
        <xsl:value-of select="$chkValue"/>
        <xsl:text>~Is Not a Number
</xsl:text>
      </xsl:when>
      <xsl:otherwise>
        <xsl:text></xsl:text>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <xsl:template name="CheckContains">
    <xsl:param name="preDefNode"/>
    <xsl:param name="chkValue"/>
    <xsl:for-each select="$preDefNode">
      <xsl:choose>
        <xsl:when test="contains(. ,$chkValue)">
          <xsl:text></xsl:text>
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$chkValue"/>
          <xsl:text> ~Not a Valid Value&#xa;</xsl:text>
        </xsl:otherwise>
      </xsl:choose>
    </xsl:for-each>
  </xsl:template>

  <xsl:template name="checkDate">
    <xsl:param name="theDate"/>
    <xsl:choose>
      <!-- First see if the date is the right length, 8 digits -->
      <xsl:when test="string-length($theDate) = 8">
        <xsl:variable name="mm" select="substring($theDate, 1,2 )"/>
        <xsl:variable name="dd" select="substring($theDate, 3,2 )"/>
        <xsl:variable name="yyyy" select="substring($theDate, 5,4)"/>
        <xsl:choose>
          <xsl:when test="string-length($yyyy) != 4 or not(number($yyyy))">
            <xsl:value-of select="$yyyy"/>
            <xsl:text> is not the correct format.</xsl:text>
            <xsl:text> (must have four-digit year)\t</xsl:text>
          </xsl:when>
          <xsl:when test="string-length($mm) != 2 or not(number($mm)) or number($mm) &gt; 12">
            <xsl:value-of select="$mm"/>
            <xsl:text> is not the correct format.</xsl:text>
            <xsl:text> (Month value should be valid)\t</xsl:text>
          </xsl:when>
          <xsl:when test="string-length($dd) != 2 or not(number($dd)) or number($dd) &gt; 31">
            <xsl:value-of select="$dd"/>
            <xsl:text> is not the correct format.</xsl:text>
            <xsl:text> (Day value should be valid)\t</xsl:text>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$theDate"/>
            <xsl:text>\t</xsl:text>
          </xsl:otherwise>
        </xsl:choose>
      </xsl:when>
      <!-- bad length -->
      <xsl:otherwise>
        <xsl:value-of select="$theDate"/>
        <xsl:text> is not the correct format.</xsl:text>
        <xsl:text> (invalid length)&#xa;</xsl:text>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  <!-- Predefined Templates for Validations-->

</xsl:stylesheet>