Subj : Re: rhino - dynamic dispatching of function calls question
To   : Biker Conrad <bikerc@yahoo.com>
From : Igor Bukanov <igor@fastmail.fm>
Date : Mon Feb 23 2004 09:12 pm

Biker Conrad wrote:
> I am new to Rhino so please bear with me if I am missing something
> obvious...
> 
> I want to dynamically redirect javascript function calls to a java
> object method, without having to define these functions as methods of
> the java object. In this case the function name would be passed as a
> parameter along with the actual parameters. For instance, if I have an
> javascript object called customer, I want to handle the calls
> customer.address, customer.postal_code with the same java method of
> the Customer class, let's say getAttribute(String attributeName),
> without having to define the jsGet_address and jsGet_postal_code in my
> java class. Similar, if I want to assign an address I would use a
> function setAttribute(String attributName, Object value) instead of
> having multiple set functions.

Note that in JavaScript customer.address is no a call but rather a 
property access.

To implement custom property access and assigning in Rhino you have to 
override has, get and put methods of org.mozilla.javascript.Scriptable 
object. See also examples/Matrix.js from Rhino distribution for an 
example of such customization.

Regards, Igor

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