[R] Detect expired RSQLiteConnection?

[David Winsemius]

On Sep 2, 2014, at 5:32 AM, Duncan Murdoch wrote:

> Is there a test for an expired RSQLiteConnection?  For example, if I run
> 
> library(RSQLite)
> f <- tempfile()
> con <- dbConnect(SQLite(), f)
> dbDisconnect(con)
> con
> 
> then I get
> 
>> con
> <Expired SQLiteConnection: DBI CON (11737, 2)>
> 
> and most operations using it give errors. (In my case I have a
> persistent connection object, but if I save the workspace and then
> reload it, I get the expired connection.) I'd like to detect this case.
> Do I need to use try(), or parse the result of printing it?
> 

Noodling through the S4 and then the S3 code I found:

?isIdCurrent as the test in `sqliteCloseConnection`
> 

-- 

David Winsemius
Alameda, CA, USA