R help - May 2007 - How to assign RODBC object as R class slots and method signature

HiI have a class which would like to hold a connection to ODBC data connection.
The handle to the connection is something like (according to RODBC
manual):channel =
odbcConnect("DSN",uid="user",pwd="password")However,
I would like to make a slot of my "foo" class to hold this object. For
example:setClass("foo", representation(channel="RODBC"))But
this won't compile as it keeps saying that it cannot find "RODBC"
as a valid class name even I have the package loaded in place. And from what I
found in RODBC manual, the 'channel' variable should be of type
'RODBC'. This makes it even more difficult when I try define this
database connection like 'channel' above as method signature.For
example, I have a class for method like this.setMethod("setConn",
"foo",   signature(object="foo",newconn="RODBC")  
function(object, newconn) {   ... do something here.   })This doesn't
compile. It will keep saying that it doesn't know about type
"RODBC". Please let me know how we can solve this? Thank you.- adschai

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