Oracle JHeadstart Developer's Guide - Downloads - Oracle

VTL uses references to embed dynamic content, and a variable is one type of reference.
Variables can be set using a VTL statement. Here is an example of a VTL statement:
#set( $a = "Velocity" )
The following rule of thumb may be useful to better understand how Velocity works:
References begin with $ and are used to get something. Directives begin with # and
are used to do something.
The #macro script element allows template designers to define a repeated segment of a
VTL template, called a Velocimacro. JHeadstart has defined several macros like
#ADVANCED_SEARCH_ITEMS. You can find the macro definitions in the project
subfolder templates/default/common.
A single line comment begins with ## and finishes at the end of the line. Multi-line
comments begin with #* and end with *#.
Text that is not interpreted by the Velocity Template Engine is copied literally.
Reference: See the following three documents at the Velocity website:
User’s Guide http://jakarta.apache.org/velocity/docs/user-guide.html
Developer's
Guide
Reference
Guide
4.7.5. JHeadstart specific constructs in the Velocity Templates
http://jakarta.apache.org/velocity/docs/developerguide.html
http://jakarta.apache.org/velocity/docs/vtl-referenceguide.html
In addition to the normal Velocity capabilities, JHeadstart has created some
Velocimacros and other constructs that you can use in your custom templates.
You can access all metadata elements you enter through the Application Definition
Editor:
• ${JHS.service}
• ${JHS.current.group}
• ${JHS.current.item}
• ${JHS.current.regionContainer}
• ${JHS.current.itemRegion}
• ${JHS.current.groupRegion}
• ...
You can use all the attributes of these elements, for example ${JHS.current.group.name}.
For the proper attribute names, see the XML Schema of the Application Definition at
[JDEV_HOME]\ jdev\extensions\oracle.jheadstart.10.1.3\doc\
ApplicationDefinition.xsd. You can add this file to your ViewController project like this:
JHeadstart Developer’s Guide Using the JHeadstart Addins 4 - 29