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ASP.NET

Working with Both xsl:if and xsl:choose in XSLT
By: Jagadish Chaterjee
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    2006-12-18

    Table of Contents:
  • Working with Both xsl:if and xsl:choose in XSLT
  • Nesting xsl:if within another
  • Nesting xsl:choose within xsl:if
  • Nesting xsl:if within xsl:choose
  • Nesting xsl:choose within another
  • Other scenarios

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    Working with Both xsl:if and xsl:choose in XSLT - Nesting xsl:if within another


    (Page 2 of 6 )

    In the previous section, I already introduced "xsl:if."  And now, I want to nest "xsl:if" within another and make things a bit complicated.  To do that, we may have to modify our business need. 

    Let us modify our business need in such a way that I would like to have all the employee details listed with:

    • salary in red, if earnings are more than 4000
    • salary in blue, if earnings are more than 3000 and less than 4000
    • salary must not be shown for the employees working in department 10

    The entire XSLT code for the above business need is as follows:

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

    <xsl:stylesheet version="1.0"

        xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:template match="/">

          <table border="1">

          <xsl:apply-templates select="SQLData/Rows" />

          </table>

    </xsl:template>  

    <xsl:template match="SQLData/Rows">

          <tr>

                <td>

                      <xsl:value-of select="Empno"/>

                </td>

                <td>

                      <xsl:value-of select="Ename"/>

                </td>

                <xsl:apply-templates select="Sal" />

                <td>

                      <xsl:value-of select="Deptno"/>

                </td>

          </tr>

    </xsl:template>

    <xsl:template match="Sal">

          <xsl:if test="./following::Deptno[1]/text() != '10'">

                <xsl:if test="text() &gt; '4000'">

                      <td style="color: red">

                            <xsl:value-of select="."/>

                      </td>

                </xsl:if>

                <xsl:if test="text() &gt; '3000' and text() &lt; '4000'">

                      <td style="color: blue">

                            <xsl:value-of select="."/>

                      </td>

                </xsl:if>

                <xsl:if test="text() &gt; '0' and text() &lt; '3000'">

                      <td>

                            <xsl:value-of select="."/>

                      </td>

                </xsl:if>

          </xsl:if>

          <xsl:if test="./following::Deptno[1]/text() = '10'">

                <td>

                      NA

                </td>

          </xsl:if>

    </xsl:template>

    </xsl:stylesheet>

    When the above code gets executed, you are likely to get the following transformation:

    <table border="1">

          <tr>

                <td>1001</td>

                <td>Jag</td>

                <td>

                      NA

                </td>

                <td>10</td>

          </tr>

          <tr>

                <td>1002</td>

                <td>Chat</td>

                <td>2800</td>

                <td>20</td>

          </tr>

          <tr>

                <td>1003</td>

                <td>Winner</td>

                <td>

                      NA

                </td>

                <td>10</td>

          </tr>

          <tr>

                <td>1004</td>

                <td>Dhan</td>

                <td style="color: red">5000</td>

                <td>20</td>

          </tr>

    </table>

    Within the above XSLT code, the most confusing issue will be the following:

    xsl:if test="./following::Deptno[1]/text() != '10'">

    That tests whether the next sibling node named "Deptno" does or does not equal 10. If you are new to this, I suggest you to refer my second article in this series.

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