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  • Chapter 1: Getting Started with Stylus Studio®
  • Chapter 2: Editing and Querying XML
  • Chapter 3: Converting Non-XML Files to XML
  • Chapter 4: Converting EDI to XML
  • Chapter 5: Working with XSLT
  • Chapter 6: Creating XSLT Using the XSLT Mapper
  • Chapter 7: Debugging Stylesheets
  • Chapter 8: Defining XML Schemas
  • Chapter 9: Defining Document Type Definitions
  • Chapter 10: Writing XPath Expressions
  • Chapter 11: Working with XQuery in Stylus Studio
  • Chapter 12: Composing Web Service Calls
  • Chapter 13: Working with WSDL Documents
  • Chapter 14: Building XML Pipelines
  • Chapter 15: Publishing XML Data
  • Chapter 16: Integrating with Third-Party File Systems
  • Chapter 17: Extending Stylus Studio
  • Chapter 18: The Stylus Studio Java API
  • Chapter 19: Stylus Studio GUI Reference

    • Home >Online Product Documentation >Table of Contents >xsl:if and xsl:choose

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    xsl:if and xsl:choose

    The xsl:if instruction cannot express an else condition. It has a single input port, and a single output port, as shown in Figure 262.

    Figure 262. xsl:if Instruction Block

    Once fully defined, the xsl:if block generates code like the following:

    <Review> 
	<xsl:if test="authors/author= 'Minollo'"> 
		<xsl:value-of select="'Recommended'"/> 
	</xsl:if> 
	<xsl:if test="contains(authors/author,'Pedruzzi')"> 
		<xsl:value-of select="'A best buy'"/> 
	</xsl:if> 
</Review>

    If you need to express an else condition, use the xsl:choose instruction block. This instruction block has two output ports by default, one for the xsl:when test= attribute, and one for the one xsl:otherwise element.

    Figure 263. xsl:choose Instruction Block

    The xsl:choose instruction block generates code like the following:

    <Review> 
	<xsl:choose> 
		<xsl:when test="authors/author= 'Minollo'"> 
			<xsl:value-of select="'Recommended'"/> 
		</xsl:when> 
		<xsl:when test="contains(authors/author,'Pedruzzi')"> 
			<xsl:value-of select="'authors best buy'"/> 
		</xsl:when> 
		<xsl:otherwise> 
			<xsl:value-of select="'bah...'"/> 
		</xsl:otherwise> 
	</xsl:choose> 
</Review>

    If you need to define more than one xsl:when test= attribute, use the xsl:choose shortcut menu (right click) and select Add When Port.

    Note

     

    Stylus Studio generates the xsl:otherwise element by default for all xsl:choose instructions.

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