XSLT Interview Questions And Answers

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XSLT Interview Questions and Answers

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XSLT Interview Questions And Answers

Page 1

Questions 1 How you define functions in XSLT?

Answer
 XSLT has more than 100 build-in functions.This functions are made for string values,date and time comparison,numeric values,sequence manipulation, Node and QName and boolean variable etc.
 We can find out the XSLT function namespace from 
http://www.w3.org/2005/02/xpath-functions
I have given you some XSLT build-in functions.
current(),document(),element-variable(),function-variable(),key,gererated-id() etc.

Questions 2 How to use <xsl:apply-template> element in XSLT?

Answer
 Using <xsl:apply-template>element we can apply a template on current element or can apply on the child nodes of current element.
Example:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<h2>Book Collection</h2> 
<xsl:apply-templates/> 
</body>
</html>
</xsl:template>
<xsl:template match="book">
<p>
<xsl:apply-templates select="title"/> 
<xsl:apply-templates select="author"/>
</p>
</xsl:template>
<xsl:template match="title">
Title: <span style="color:#ff0000">
<xsl:value-of select="."/></span>
<br />
</xsl:template>
<xsl:template match="author">
Author: <span style="color:#00ff00">
<xsl:value-of select="."/></span>
<br />
</xsl:template>
</xsl:stylesheet>

Questions 3 Give an example of XSL file with choose condition?

Answer
 Using choose conditon in XSL file we can add some multi conditional test cases.
Example:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
  <html>
  <body>
    <h2>Book Collection</h2>
    <table border="1">
      <tr bgcolor="#9acd32">
        <th>Title</th>
        <th>Author</th>
      </tr>
      <xsl:for-each select="catalog/book">
      <tr>
        <td><xsl:value-of select="title"/></td>
      	<xsl:choose>
          <xsl:when test="price &gt; 150">
            <td bgcolor="#ff00ff">
            <xsl:value-of select="author"/></td>
          </xsl:when>
          <xsl:otherwise>
            <td><xsl:value-of select="author"/></td>
          </xsl:otherwise>
        </xsl:choose>
      </tr>
      </xsl:for-each>
    </table>
  </body>
  </html>
</xsl:template>
</xsl:stylesheet>
 In the above program we display those entries of Author column with pink color WHEN book price is higher than 150.

Questions 4 How to use <xsl:choose> element inXSLT?

Answer
 When we want to use <xsl:choose> element in XSL file.Than we use <xsl:when> and<xsl:otherwise> inside the <xsl:choose> element.Using them we can show multiple conditional test cases.
Syntax:
<xsl:choose>
  <xsl:when test="expression">
    ... Than gives that output ...
  </xsl:when>
  <xsl:otherwise>
    ... Than gives that output ....
  </xsl:otherwise>
</xsl:choose>

Questions 5 How to use<xsl:if> element in XSLT?

Answer
 Using <xsl:if> element we can test the content of an XSL document.
Syntax:
<xsl:if test="expression">
...Write here output it will dispay when condition is true...
</xsl:if>
 I have given you example to use of <xsl:if> element.
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
  <html>
  <body>
    <h2>Book Collection</h2>
    <table border="1">
      <tr bgcolor="#9acd32">
        <th>Title</th>
        <th>Author</th>
      </tr>
      <xsl:for-each select="catalog/book">
      <xsl:if test="price &gt; 150">
        <tr>
          <td><xsl:value-of select="title"/></td>
          <td><xsl:value-of select="author"/></td>
        </tr>
      </xsl:if>
      </xsl:for-each>
    </table>
  </body>
  </html>
</xsl:template>
</xsl:stylesheet>
 It  will give the title of book with related author which book cost greater than 150.