When the XML data source parses the navtree.xml file it creates a table and gives it the data key navtree. When you use the Builder Attach to XML Data dialog, enter navtree in the Data Key field. The table has one row for each node that is defined in the navtree.xml file. The table contains the following columns:

Typically, you attach the valueTable property of a navigation control object to the navtree table, and the navigation control object's valueTableFormat property is set to Row-Node. Subsequently, the column names listed above are specified as values for other properties on the navigation control as follows:

To see an example of an accordion control configured in this manner, use the Builder to examine the display named accordcon.rtv, located in the RTV_HOME/demos/features directory. The XML file used by the example is demos/features/navtree.xml. To see the working example, type the following commands in an RTView command prompt:

        cd %RTV_HOME%\demos\features
        run_viewer -panelconfig:PANELS_accordcon.ini

In addition to the columns mentioned above, the navtree table's Subs column can also be used to configure the drilldownColumnSubs property of a navigation control. In the Drill Down Column Substitutions dialog, find the row for Column Name = Subs, and in the Substitution String column enter the string __parse (there are two underscores in the prefix), that is:

This tells RTView to parse the string found in the Subs column for the node selected in the navigation control, which is expected to contain one or more sub:value pairs, separated by spaces. For example, if the Subs column contains this string:

$sub1:abc $sub2:xyz

and if the navigation control's drilldownColumnSubs property is configured as described, a drilldown from the navigation control the $sub1 and $sub2 substitutions is assigned the values abc and xyz, respectively.