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Chapter 13. XSL Transformations > Using xsl:choose
Using xsl:choose
The <xsl:choose> element is much like the Java switch statement, which enables you to compare a test value against several possible matches. Suppose that we add COLOR attributes to each <PLANET> element in planets.xml:
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<?xml version="1.0"?>
<?xml-stylesheet type="text/xml" href="planets.xsl"?>
<PLANETS>
<PLANET COLOR="RED">
<NAME>Mercury</NAME>
<MASS UNITS="(Earth = 1)">.0553</MASS>
<DAY UNITS="days">58.65</DAY>
<RADIUS UNITS="miles">1516</RADIUS>
<DENSITY UNITS="(Earth = 1)">.983</DENSITY>
<DISTANCE UNITS="million miles">43.4</DISTANCE><!--At perihelion-->
</PLANET>
<PLANET COLOR="WHITE">
<NAME>Venus</NAME>
<MASS UNITS="(Earth = 1)">.815</MASS>
<DAY UNITS="days">116.75</DAY>
<RADIUS UNITS="miles">3716</RADIUS>
<DENSITY UNITS="(Earth = 1)">.943</DENSITY>
<DISTANCE UNITS="million miles">66.8</DISTANCE><!--At perihelion-->
</PLANET>
<PLANET COLOR="BLUE">
<NAME>Earth</NAME>
<MASS UNITS="(Earth = 1)">1</MASS>
<DAY UNITS="days">1</DAY>
<RADIUS UNITS="miles">2107</RADIUS>
<DENSITY UNITS="(Earth = 1)">1</DENSITY>
<DISTANCE UNITS="million miles">128.4</DISTANCE><!--At perihelion-->
</PLANET>
</PLANETS>
