On Thu, 23 Feb 2006, Jeffrey Horner wrote: > Prof Brian Ripley wrote: >> On Thu, 23 Feb 2006, Jeffrey Horner wrote: >> >>> Hello all, >>> >>> I'd like to utilize the R_Sock* functions from R_ext/R-ftp-http.h in my >>> R package. The intent is to use these in conjunction with R_serialize() >>> to store R objects in a remote data store. I'm aware that version >>> 2.2.1 of "Writing R extensions" explains that these may be undocumented >>> and unstable, but I have a couple of questions: >>> >>> 1) are they platform independent? I presume they are... >> >> >> Only in sense that they have a common interface. >> >>> 2) What's the appropriate way to link against them? On Linux x86, I can >>> do this with the Makevars: >> >> >> You can, but that is a module and not a library and so it does not work on >> MacOS X and may well not work on Windows (you would be lucky prior to R >> 2.3.0). >> >> I wonder why you need a C interface at all. There is serialize() and >> socket connections are available at R level. Below that, Rsockopen etc are >> exported from R itself and underly make.socket etc. > > I may not need it (or get to use it portably), but as far as using Rsockopen, > etc. am I right in assuming that a package writer would have to copy the > declarations from src/main/basedecl.h into his/her own code in order to > utilize them? This seems odd when there's already an exposed (although > undocumented) interface with R_Sock*, so what's the point of having > R_ext/R-ftp-http.h? Is it just for some xml package?
Yes. It was written as an internal header. As you have discovered, the interface is not actually exposed. > On a related note, how do I serialize() an R object to a database table > column of type BLOB? I've tried using RODBC but was unsuccessfully (see > R-sig-DB in Feb archive). I've also looked into RMySQL/DBI but I don't think > it's supported yet. Since BLOB is not a standard SQL type (AFAIK), ODBC seems not to support it. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
