Path: blob/main/lang/apache-commons-jelly/pkg-descr
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Jelly is an XML based scripting engine. The basic idea is that XML elements can be bound to a Java Tag which is a Java bean that performs some function. Jelly is totally extendable via custom actions (in a similar way to JSP custom tags) as well as cleanly integrating with scripting languages such as Jexl, Velocity, pnuts, beanshell and via BSF (Bean Scripting Framework) languages like JavaScript & JPython. Jelly uses an XMLOutput class which extends SAX ContentHandler to output XML events. This makes Jelly ideal for XML content generation, SOAP scripting or dynamic web site generation. A single Jelly tag can produce, consume, filter or transform XML events. This leads to a powerful XML pipeline engine similar in some ways to Cocoon.