elextensions.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">

<chapter id="elextensions">
   <title>Evaluating Unified EL</title>
   
   <para>
      Weld extensions provides a method to evaluate EL that is not dependent on JSF or JSP, a facility sadly missing in
      Java EE. To use it inject <code>Expressions</code> into your bean. You can evaluate value expressions, or method
      expressions. The Weld Extensions API provides type inference for you. For example: 
   </para>
   
   <programlisting role="JAVA">class FruitBowl {
   
   @Inject Expressions expressions;
  
   public void run() {
      String fruitName = expressions.evaluateValueExpression("#{fruitBowl.fruitName}");
      Apple fruit = expressions.evaluateMethodExpression("#{fruitBown.getFruit}");
   }
}</programlisting>
   
</chapter>