• Chapter 1: Getting Started with Stylus Studio®
• Chapter 2: Editing and Querying XML
• Chapter 3: Converting Non-XML Files to XML
• Chapter 4: Working with XSLT
  • Getting Started with XSLT
    • What Is XSLT?
    • What Is a Stylesheet?
    • What Is a Template?
    • How the XSLT Processor Applies a Stylesheet
    • Controlling the Contents of the Result Document
    • Specifying XSLT Patterns and Expressions
      • Examples of Patterns and Expressions
    • Frequently Asked Questions About XSLT
    • Sources for Additional XSLT Information
    • Benefits of Using Stylus Studio
  • Tutorial: Understanding How Templates Work
  • Working with Stylesheets
  • Creating Stylesheets That Generate HTML
  • Specifying Extension Functions in Stylesheets
  • Working with Templates
  • Using Third-Party XSLT Processors
  • Validating Result Documents
  • Post-processing Result Documents
  • Generating Formatting Objects
  • Generating Scalable Vector Graphics
  • Generating Java Code for XSLT
  • XSLT Instructions Quick Reference
• Chapter 5: Creating XSLT Using the XSLT Mapper
• Chapter 6: Debugging Stylesheets
• Chapter 7: Defining XML Schemas
• Chapter 8: Defining Document Type Definitions
• Chapter 9: Writing XPath Expressions
• Chapter 10: Working with XQuery in Stylus Studio
• Chapter 11: Composing Web Service Calls
• Chapter 12: Accessing Relational Data as XML
• Chapter 13: Building XML Pipelines
• Chapter 14: Publishing XML Data
• Chapter 15: Integrating with Third-Party File Systems
• Chapter 16: Extending Stylus Studio
• Chapter 17: The Stylus Studio Java API
• Chapter 18: Stylus Studio GUI Reference

Home > Online Product Documentation > Table of Contents > Specifying XSLT Patterns and Expressions

Specifying XSLT Patterns and Expressions

In a stylesheet's xsl:template, xsl:apply-templates, xsl:for-each, and xsl:value-of instructions, you specify patterns or expressions as the values for the match or select attributes. These patterns are XPath expressions. You specify patterns or expressions to

Depending on the context, an XSLT pattern or expression can mean one of the following:

Patterns or expressions can match or select any type of node. The XSLT processor can match a pattern to a node based on the existence of the node, the name of the node, or the value of the node. You can combine patterns and expressions with Boolean operators. For detailed information about patterns and expressions, see Chapter 9Writing XPath Expressions.

Examples of Patterns and Expressions

Following are examples of patterns and expressions you can specify in stylesheet instructions:

              xsl:template match = "book/price" 
               

            

Matches any price element that is a child of a book element.

              xsl:template match = "book//award" 
               

            

Matches any award element that is a descendant of a book element.

              xsl:template match = "book [price]" 
               

            

Matches any book element that has a child that is a price element.

              xsl:template match = "book [@price]" 
               

            

Matches any book element that has a price attribute.

              xsl:template match = "book [price=14]" 
               

            

Matches any book element that has a child that is a price element whose value is 14.

              xsl:template match = "book [@price=14]"
               

            

Matches any book element that has a price attribute whose value is 14.

              xsl:apply-templates select = "book"
               

            

Selects all book elements that are children of the current element.

              xsl:apply-templates select = "book/price"
               

            

Selects all price elements that are children of book elements that are children of the current element.

              xsl:apply-templates select = "//book"
               

            

Selects all book elements in the source document.

              xsl:apply-templates select = ".//book"
               

            

Selects all book elements that are descendants of the current element.