XSLT

You can use XSLT to transform the XML result of a report into a new output format.

The following section shows some examples how to transform and aggregate the XML result of an Imixs EntityCollection into new formats using XSLT.

Select a single Item Value

The following example shows an output of item values of the current document:

<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
   <xsl:output method="xml" indent="yes"/>
        <xsl:template match="/">
           Status:<xsl:value-of select="document/item[@name='$workflowstatus']/value" />
           Supplier:<xsl:value-of select="document/item[@name='_supplier']/value" />
   </xsl:template>
</xsl:stylesheet>

Select an Item List

Items can contain a value list. The following example shows how to iterate over a list of values stored in the item named ‘_system’:

...
<xsl:for-each select="document/item[@name='_system']/value">
  <xsl:value-of select="." />
</xsl:for-each>
....

Iterate over a List of embedded Items

The following example shows how you can iterate over a embedded list of items (Map) stored in an item with the name ‘_childitems’ :

...
<xsl:for-each select="document/item[@name='_childitems']/value">
  <tr>
     <td><xsl:value-of select="item[@name='numpos']/value"/></td>
     <td><xsl:value-of select="item[@name='article']/value"/></td>
     <td><xsl:value-of select="item[@name='amount']/value"/></td>
     <td><xsl:value-of select="item[@name='unit']/value"/></td>
     <td><xsl:value-of select="item[@name='price']/value"/></td>
  </tr>
</xsl:for-each>
...

Select Entities by a Specific Item Value

The following Example shows how to select only entities with the specific Item $workflowgroup=‘Invoice’ and print out the attribute ‘$tworkflowstatus’ of each matching entity:

<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
   <xsl:output method="xml" indent="yes"/>
        <xsl:template match="/">
        <collection>
           <xsl:apply-templates select="/collection/document[normalize-space(item[@name = '$workflowgroup']/value) = 'Rechnungsausgang']" />        
      </collection>
  </xsl:template>
  <!-- Template Definition -->
  <xsl:template
    match="/collection/document[normalize-space(item[@name = '$workflowgroup']/value) = 'Rechnungsausgang']">
     Status=<xsl:value-of select="item[@name='$workflowstatus']/value" />
   </xsl:template>
</xsl:stylesheet>

Group Workitems by Category

You can also group entities by a Item Value. The next example groups all entities by the Item “$workflowstatus” and print out the attributes $created and _amount in each category

<?xml version="1.0" encoding="UTF-8" ?>
  <xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:output method="xml" indent="yes" />
        <xsl:key name="groups" match="/collection/document"
        use="item[@name='$workflowstatus']/value" />
    <xsl:template match="/">
        <collection>
           <xsl:apply-templates select="/collection/document[generate-id() = generate-id(key('groups', item[@name='$workflowstatus']/value)[1])]" />
        </collection>
  </xsl:template>
    <xsl:template match="/collection/document">
        <status>
           <xsl:value-of select="item[@name='$workflowstatus']/value" />
       </status>
      <xsl:for-each select="key('groups', item[@name='$workflowstatus']/value)">
           <created>
             <xsl:value-of select="item[@name='$created']/value" />
           </created>
           <amount>
             <xsl:value-of select="item[@name='_amount']/value" />
          </amount>
        </xsl:for-each>
   </xsl:template>
 </xsl:stylesheet>

Sum total by Category

The next example groups all entities by the Item Value “$workflowstatus” and returns the sum of the value ‘_amount’.

<?xml version="1.0" encoding="UTF-8" ?>
  <xsl:stylesheet xmlns="http://www.w3.org/1999/xhtml" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="xml" indent="yes" />
    <xsl:key name="groups" match="/collection/document" use="item[@name='$workflowstatus']/value" />
    <xsl:template match="/">
    <collection>
       <xsl:apply-templates
         select="/collection/document[generate-id() = generate-id(key('groups', item[@name='$workflowstatus']/value)[1])]" />
    </collection>
  </xsl:template>
  <xsl:template match="/collection/document">
    <status>
       <xsl:value-of select="item[@name='$workflowstatus']/value" />
    </status>
    <total>
       <xsl:value-of select="sum(key('groups', item[@name='$workflowstatus']/value)//item[@name='_amount']/value)" />
    </total>       
   </xsl:template>
 </xsl:stylesheet>