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From "Don Brown" <>
Subject [proposal] JSExtensions - Integrating Java into Javascript
Date Thu, 27 Apr 2006 18:44:06 GMT
I propose a new commons sandbox project, JSExtensions, aimed at providing a
library of server-side Javascript (Rhino ATM) extensions that better
integrate Java into the Javascript environment.  This is implemented in two

 - Making the Java collections more natural to Javascript
 - Extending the Java API to add convenience properties and methods

The inital code will come from Struts Flow[1], a Struts sandbox project that
brought server-side Javascript to Struts.  In its development, I looked at
Groovy and saw how they improved the Java API [2] to make it better
integrated and more natural in the Groovy environment.  I brought its ideas
over to Struts Flow [3], attempting to do the same for Javascript.  This
code is better suited as an individual project, usable by other
Javascript-using Apache projects like Cocoon.  In addition, these changes
make Javascript equally appropriate for standalone shell scripting-type

As a quick example, here is the eachLine() extension method on the object, printing each line's contents to System.out:

file = new"foo.txt");
file.eachLine(function(line) { print(line) });

To be clear, this proposal has nothing to do with client-side Javascript,
only server-side Javascript through Rhino and soon Java 6.  The code already
runs and uses a special unit testing framework for testing.  Looking forward
to the feedback.



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