Apache Jelly

Last updated
Apache Jelly
Developer(s) Apache Software Foundation
Written in Java
License Apache License 2.0
Website apache.org/jelly

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.

Contents

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

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:scriptxmlns:j="jelly:core"xmlns:gel="jelly:com.niku.union.gel.GELTagLibrary"><j:forEachindexVar="i"begin="1"end="3"><gel:out>HelloWorld${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]

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References

  1. ↑ "Jelly - Jelly : Executable XML".
  2. ↑ "Jelly - Jelly Overview".
  3. ↑ CA PPM Product Page at ca.com Archived 2016-02-20 at the Wayback Machine
  4. ↑ CA PPM 15.2 XOG GEL Scripting [ dead link ]
  5. ↑ Now Platform Scripting - Jelly tags
  6. ↑ "How to write a Jenkins Plugin – Part 2". Clean Test Code. 2013-11-28. Retrieved 2016-12-30.
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