MichaelChirico
commented
4 years ago From: Uwe Ligges <ligges@<::CENSORED -- SEE ORIGINAL ON BUGZILLA::>-dortmund.de> feferraz@<::CENSORED -- SEE ORIGINAL ON BUGZILLA::> wrote:
Full_Name: Fernando Henrique Ferraz Pereira da Rosa
Version: 1.8.0
OS: Linux 2.4.21
Submission from: (NULL) (200.206.211.169)
After installing R 1.8.0, the R DBI interface stopped working. I tracked
it
down as a problem in the 'methods' package, that comes in the default
installation.
Somehow the function '.valueClassTest' which is defined on package
'methods', is not being defined.It is. See below.
To ilustrate how this breaks DBI, try this in a 1.8.0 R install (with
DBI
installed):
> library(DBI)
> con <- dbConnect(dbDriver("MySQL"), dbname = "test")
Error in dbConnect(dbDriver("MySQL"), dbname = "test") :
couldn't find function ".valueClassTest"
A dirty fix would be defining it by hand (from
src/library/methods/R/RMethodUtils.R) :
.valueClassTest <- function(object, classes, fname) {
(...)
}
(Which works), but ideally it'd be nice determning why the function is
not being defined on the first place.Package "methods" has a namespace from which .valueClassTest() is not exported, but it's in there, try: methods:::.valueClassTest
I think .valueClassTest() is not intended to be called by the user, so the bug seems to be in package DBI rather than in R, and the maintainer of DBI (David A. James <dj@<::CENSORED -- SEE ORIGINAL ON BUGZILLA::>-labs.com>, in CC) will certainly fix it.
Uwe Ligges
METADATA
- Comment author - Jitterbug compatibility account
- Timestamp - 2003-10-11 14:47:24 UTC
From: feferraz@<::CENSORED -- SEE ORIGINAL ON BUGZILLA::> Full_Name: Fernando Henrique Ferraz Pereira da Rosa Version: 1.8.0 OS: Linux 2.4.21 Submission from: (NULL) (200.206.211.169)
down as a problem in the 'methods' package, that comes in the default installation. Somehow the function '.valueClassTest' which is defined on package 'methods', is not being defined. To ilustrate how this breaks DBI, try this in a 1.8.0 R install (with DBI installed):
Error in dbConnect(dbDriver("MySQL"), dbname = "test") : couldn't find function ".valueClassTest"
src/library/methods/R/RMethodUtils.R) :
.valueClassTest <- function(object, classes, fname) { (...) }
not being defined on the first place.
METADATA