Apache Commons JEXL Implementation of the JSTL Expression Language with extensions
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development Java library develop developer Java development

Apache Commons JEXL Description

Apache Commons JEXL was built as an Open Source library that facilitates the implementation of dynamic and scripting features in applications and frameworks written in Java. Apache Commons JEXL implements an Expression Language based on some extensions to the JSTL Expression Language supporting most of the constructs seen in shell-script or ECMAScript. Its goal is to expose scripting features usable by technical operatives or consultants working with enterprise platforms. The JEXL name stands for Java EXpression Language, a simple expression language originally inspired by Apache Velocity and the Expression Language defined in the JavaServer Pages Standard Tag Library version 1.1 (JSTL) and JavaServer Pages version 2.0 (JSP). JEXL 2.0 added features inspired by Unified EL. The syntax is now close to a mix of ECMAScript and "shell-script" making it easy to master by technical operatives or consultants. The objects exposed and their behavior obviously need to be documented though.

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