R help - Jun 2012 - Very simple question R5 setRefClass and Initialize

Hi,
New to this list, and glad I found R5 which si a great improvement to R 
for my work.
Something seems odd anyway, when I do a setRefClass, the initialize 
method execute at the class definition.
I would like it to execute only when an instance is created.
How can I do that? I found no way to test if the code execution is when 
the class definition happens or when a $new instance is created.
Thanks for your help.
For example my class definition looks like this :

mongoDbUser = setRefClass("mongoDbUser",
     fields = list(
     auth = "logical",
     host = "character",
         username = "character",
     password = "character",
         db = "character",
     connector = "mongo"
     ),
   methods = list(
     initialize = function(auth,host,username,password,db,connector){
       print("initialization")
     }
   )
)

If I execute this code, it says "initialization", but it
shouldn't, I
created no instance, right??
I would like "initialization" to appear only when I do :
mongoDbUser$new(...)

Help anyone? Is this impossible? I tried to use the initFields method 
but it did not change anything.

Le 25/06/2012 10:55, Julien Cochennec a ?crit :
> Hi,
> New to this list, and glad I found R5 which si a great improvement to 
> R for my work.
> Something seems odd anyway, when I do a setRefClass, the initialize 
> method execute at the class definition.
> I would like it to execute only when an instance is created.
> How can I do that? I found no way to test if the code execution is 
> when the class definition happens or when a $new instance is created.
> Thanks for your help.
> For example my class definition looks like this :
>
> mongoDbUser = setRefClass("mongoDbUser",
>     fields = list(
>     auth = "logical",
>     host = "character",
>         username = "character",
>     password = "character",
>         db = "character",
>     connector = "mongo"
>     ),
>   methods = list(
>     initialize = function(auth,host,username,password,db,connector){
>       print("initialization")
>     }
>   )
> )
>
> If I execute this code, it says "initialization", but it
shouldn't, I
> created no instance, right??
> I would like "initialization" to appear only when I do :
> mongoDbUser$new(...)
>
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