XSLT <xsl:choose> Element
The <xsl:choose> element is used in conjunction with <xsl:when>
and <xsl:otherwise> to express multiple
conditional tests.
The <xsl:choose> Element
Syntax
<xsl:choose>
<xsl:when test="expression">
... some output ...
</xsl:when>
<xsl:otherwise>
... some output ....
</xsl:otherwise>
</xsl:choose>
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Where to put the Choose Condition
To insert a multiple conditional test against the XML file, add
the <xsl:choose>, <xsl:when>, and <xsl:otherwise> elements to
the XSL file:
<?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>My CD Collection</h2>
<table border="1">
<tr bgcolor="#9acd32">
<th>Title</th>
<th>Artist</th>
</tr>
<xsl:for-each select="catalog/cd">
<tr>
<td><xsl:value-of select="title"/></td>
<xsl:choose>
<xsl:when test="price > 10">
<td bgcolor="#ff00ff">
<xsl:value-of select="artist"/></td>
</xsl:when>
<xsl:otherwise>
<td><xsl:value-of select="artist"/></td>
</xsl:otherwise>
</xsl:choose>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
|
The code above will add a pink background-color to the "Artist" column WHEN the
price of the CD is higher than 10.
The result of the transformation will look like this:
My CD Collection
| Title |
Artist |
| Empire Burlesque |
Bob Dylan |
| Hide your heart |
Bonnie Tyler |
| Greatest Hits |
Dolly Parton |
| Still got the blues |
Gary Moore |
| Eros |
Eros Ramazzotti |
| One night only |
Bee Gees |
| Sylvias Mother |
Dr.Hook |
| Maggie May |
Rod Stewart |
| Romanza |
Andrea Bocelli |
| When a man loves a woman |
Percy Sledge |
| Black angel |
Savage Rose |
| 1999 Grammy Nominees |
Many |
| For the good times |
Kenny Rogers |
| Big Willie style |
Will Smith |
| Tupelo Honey |
Van Morrison |
| Soulsville |
Jorn Hoel |
| The very best of |
Cat Stevens |
| Stop |
Sam Brown |
| Bridge of Spies |
T`Pau |
| Private Dancer |
Tina Turner |
| Midt om natten |
Kim Larsen |
| Pavarotti Gala Concert |
Luciano Pavarotti |
| The dock of the bay |
Otis Redding |
| Picture book |
Simply Red |
| Red |
The Communards |
| Unchain my heart |
Joe Cocker |
View the XML file,
View the XSL file, and
View the result
Another Example
Here is another example that contains two <xsl:when> elements:
<?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>My CD Collection</h2>
<table border="1">
<tr bgcolor="#9acd32">
<th>Title</th>
<th>Artist</th>
</tr>
<xsl:for-each select="catalog/cd">
<tr>
<td><xsl:value-of select="title"/></td>
<xsl:choose>
<xsl:when test="price > 10">
<td bgcolor="#ff00ff">
<xsl:value-of select="artist"/></td>
</xsl:when>
<xsl:when test="price > 9">
<td bgcolor="#cccccc">
<xsl:value-of select="artist"/></td>
</xsl:when>
<xsl:otherwise>
<td><xsl:value-of select="artist"/></td>
</xsl:otherwise>
</xsl:choose>
</tr>
</xsl:for-each>
</table>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
|
The code above will add a pink background color to the "Artist" column WHEN the
price of the CD is higher than 10, and a grey background-color WHEN the price of
the CD is higher than 9 and lower or equal to 10.
The result of the transformation will look like this:
My CD Collection
| Title |
Artist |
| Empire Burlesque |
Bob Dylan |
| Hide your heart |
Bonnie Tyler |
| Greatest Hits |
Dolly Parton |
| Still got the blues |
Gary Moore |
| Eros |
Eros Ramazzotti |
| One night only |
Bee Gees |
| Sylvias Mother |
Dr.Hook |
| Maggie May |
Rod Stewart |
| Romanza |
Andrea Bocelli |
| When a man loves a woman |
Percy Sledge |
| Black angel |
Savage Rose |
| 1999 Grammy Nominees |
Many |
| For the good times |
Kenny Rogers |
| Big Willie style |
Will Smith |
| Tupelo Honey |
Van Morrison |
| Soulsville |
Jorn Hoel |
| The very best of |
Cat Stevens |
| Stop |
Sam Brown |
| Bridge of Spies |
T`Pau |
| Private Dancer |
Tina Turner |
| Midt om natten |
Kim Larsen |
| Pavarotti Gala Concert |
Luciano Pavarotti |
| The dock of the bay |
Otis Redding |
| Picture book |
Simply Red |
| Red |
The Communards |
| Unchain my heart |
Joe Cocker |
View the XML file,
View the XSL file, and
View the result
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