Apache Jelly is a Java and XML based scripting and processing engine for turning XML into executable code. ^[1] Jelly is a component of Apache Commons .

Custom XML languages are commonly created to perform some kind of processing action. Jelly is intended to provide a simple XML based processing engine that can be extended to support various custom actions. ^[2]

Usage [ edit ]

CA Project and Portfolio Management, or CA PPM, ^[3] formerly known as CA Clarity PPM or just Clarity, is a product of Broadcom . CA PPM uses an extended version of the Jelly tag-language as an automation and integration scripting language in its Process Management engine. CA PPM implementation of Jelly is called GEL (Generic Execution Language) and encompasses a new custom tag library that allows easier connection to CA PPM via its XML Open Gateway (XOG). The following example shows how CA PPM implements the classical " Hello World " application. ^[4]

<gel:script
 xmlns:j=
"jelly:core"
 xmlns:gel=
"jelly:com.niku.union.gel.GELTagLibrary"
>

  <j:forEach
 indexVar=
"i"
 begin=
"1"
 end=
"3"
>

    <gel:out>
Hello
 World
 ${i}!
</gel:out>

  </j:forEach>

</gel:script>

Jelly is also used by the ServiceNow platform, which uses Jelly tag-language for scripting the UI, ^[5] and by the Jenkins continuous integration server, which uses Jelly to allow plugins to extend its UI. ^[6]

References [ edit ]

External links [ edit ]

• Apache Jelly
• Apache Commons Homepage