[Rd] Reference classes: accessor functions via 'getRefClass(...)$accessors(...)'

From: Janko Thyson <janko.thyson_at_ku-eichstaett.de>
Date: Wed, 17 Nov 2010 13:07:18 +0100


Hi there,  

I'd like to choose between an "static" and "dynamic" access of a reference class field, say 'a'.  

myObj <- getRefClass("Blabla")$new()  

Static:                   myObj$a

Dynamic:             myObj$a.get() where the function retrieves the data
from a database (or some other location), stores it to a buffer and optionally updates the static field value 'a'.  

I've set up such a method 'a.get()' where I can actually decide between static and dynamic runmode (so the method also wraps the call 'myObj$a' for the static runmode).  

Now I saw that setting up such accessor methods (get/set) is already done for me if I use 'getRefClass("Blabla")$accessors(.)'. I just don't understand what exactly I have to do there, because this results in an error: 'getRefClass("Blabla")$accessors("a")'  

Can anyone point me to the correct use of 'getRefClass(.)$accessors(.)'?  

Thanks a lot,

Janko

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