[Bioc-devel] Environment/RSqlite db interaction
James W. MacDonald
jmacdon at med.umich.edu
Wed Sep 12 21:28:58 CEST 2007
Hi,
I have stumbled upon a weird interaction between the SQlite-based
annotation packages and the old environment-based packages.
The annaffy package has a function is_dbpackage() that is used to strip
off the .db at the end of the SQlite packages, using something like this:
tmp <- as.environment(paste("package", chip, sep=":"))
exists("db_conn", tmp)
If a SQlite package is loaded first, this test fails:
> library(GO.db)
Loading required package: AnnotationDbi
Loading required package: Biobase
Loading required package: tools
Welcome to Bioconductor
Vignettes contain introductory material. To view, type
'openVignette()'. To cite Bioconductor, see
'citation("Biobase")' and for packages 'citation(pkgname)'.
Loading required package: DBI
Loading required package: RSQLite
> library(mouse4302)
> tmp <- as.environment("package:mouse4302")
> exists("db_conn", tmp)
[1] TRUE
But if the env-based package is loaded first, it works:
> library(mouse4302)
> library(GO.db)
Loading required package: AnnotationDbi
Loading required package: Biobase
Loading required package: tools
Welcome to Bioconductor
Vignettes contain introductory material. To view, type
'openVignette()'. To cite Bioconductor, see
'citation("Biobase")' and for packages 'citation(pkgname)'.
Loading required package: DBI
Loading required package: RSQLite
> tmp <- as.environment("package:mouse4302")
> exists("db_conn", tmp)
[1] FALSE
I can get around this behavior for now by remembering to load the envs I
need to use with annaffy first. However, for end users this won't
necessarily be an option, and annaffy fails miserably if you load things
in the 'wrong' order.
Is this something that needs to be fixed in annaffy, or should this test
reliably detect the difference between an env or SQlite based package?
Best,
Jim
Oh yeah, I almost forgot:
> sessionInfo()
R version 2.6.0 alpha (2007-09-11 r42820)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] tools stats graphics grDevices datasets utils methods
[8] base
other attached packages:
[1] GO.db_1.17.1 AnnotationDbi_0.1.15 RSQLite_0.6-0
[4] DBI_0.2-3 Biobase_1.15.33 mouse4302_1.17.0
[7] rcompgen_0.1-15
---
James W. MacDonald, M.S.
Biostatistician
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623
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