• 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
  • 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
    • xsl:apply-imports
    • xsl:apply-templates
    • xsl:attribute
    • xsl:attribute-set
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    • xsl:character-map
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    • xsl:comment
    • xsl:copy
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    • xsl:decimal-format
    • xsl:element
    • xsl:fallback
    • xsl:for-each
    • xsl:for-each-group
      • Format
      • Description
    • xsl:function
    • xsl:if
    • xsl:import
    • xsl:import-schema
    • xsl:include
    • xsl:key
    • xsl:message
    • xsl:namespace-alias
    • xsl:number
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    • xsl:output-character
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    • xsl:sequence
    • xsl:sort
    • xsl:strip-space
    • xsl:stylesheet
    • xsl:template
    • xsl:text
    • xsl:transform
    • xsl:value-of
    • xsl:variable
    • xsl:when
    • xsl:with-param
• 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: Integrating with Third-Party File Systems
• Chapter 14: Extending Stylus Studio
• Chapter 15: Stylus Studio GUI Reference

Home > Online Product Documentation > Table of Contents > xsl:for-each-group

xsl:for-each-group

Allocates the items in an input sequence into groups of items (that is, it establishes a collection of sequences) based either on common values of a grouping key, or on a pattern that the initial or final node in a group must match.

Format

<xsl:for-each-group
               
  select = expression
               
  [group-by = expression]
               
  [group-adjacent = expression]
               
  [group-starting-with = pattern]
               
  [group-ending-with = pattern]
               
  [collation = { uri }>
               
  <!-- Content: (xsl:sort*, sequence-constructor) -->
               
</xsl:for-each-group>
               

            

Description

The xsl:for-each-group element is an instruction that can be used anywhere within a sequence constructor. The sequence of items to be grouped is referred to as a population. A group cannot be empty. If the population is zero (that is, empty), the number of groups is zero. How items are assigned to groups is determined by the group-by, group-adjacent, group-starting-with, and group-ending-with attributes.