Previous | Next | Indexes
adultinternetusers > Tutorials > XSLT 2.0 Tutorial > Groups (1/10) >

Grouping with group-by

Using xsl:for-each-group element, sequences can be grouped by the specified criterion. The select attribute on xsl:for-each-group specifies sequences to be grouped, the second attribute on this element determines the type of grouping.

In this example nodes are grouped by the value of "v" attribute. For this kind of grouping attribute group-by is used.

Inside xsl:for-each-group select attribute of xsl:apply-template which is set to "." selects the first node of the group.

Function current-group() is used if all nodes from the group are needed. Function current-grouping-key() gives the grouping value which is currently used.

XSLT

      <xsl:stylesheet
                  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                  version="2.0">
            <xsl:output  method="xml"
                        indent="yes"
                        omit-xml-declaration="yes"/>

            <xsl:template  match="/aaa">
                  <xsl:for-each-group  select="*"
                              group-by="@v">
                        <sss>
                              <xsl:apply-templates  select="."/>
                        </sss>
                        <ggg  id="{current-grouping-key()}">
                              <xsl:apply-templates  select="current-group()"/>
                        </ggg>
                  </xsl:for-each-group>
            </xsl:template>

            <xsl:template  match="*">
                  <xsl:copy-of  select="."/>
            </xsl:template>

      </xsl:stylesheet>
XML

      <aaa>
            <bbb  v="a2"/>
            <ccc  v="1"/>
            <ddd  v="1"/>
            <eee  v="a2"/>
            <fff  v="1"/>
            <ggg  v="zz3"/>
      </aaa>
Output

      <sss>
            <bbb  v="a2"/>
      </sss>
      <ggg  id="a2">
            <bbb  v="a2"/>
            <eee  v="a2"/>
      </ggg>
      <sss>
            <ccc  v="1"/>
      </sss>
      <ggg  id="1">
            <ccc  v="1"/>
            <ddd  v="1"/>
            <fff  v="1"/>
      </ggg>
      <sss>
            <ggg  v="zz3"/>
      </sss>
      <ggg  id="zz3">
            <ggg  v="zz3"/>
      </ggg>


Previous chapter: Elements and attributes
Next chapter: Multiple source documents
Previous page: - - -
Next page: Grouping with group-adjacent

Kevin Carr in Stanton

Natural Skin Care and European Soaps
TickTalk 5
city of stanton
internetusers


You can also get Organic Skin Care products from Bliss Bath Body and you must check out their Natural Body Lotions and bath soaps

Now if you are looking for the best deals on surf clothing from Quiksilver and Roxy then you have to check these amazing deals here: 

Hey, check out this Organic Skin Care European Soaps along with Natural Lavender Body Lotion and shea butter

and we can get surf t shirts surfing shirt and And you must check out this website swim suit swimming suit and swim trunks ing suit and swim trunks