WPS4R resources as reference

[nuest]

The resource annotation mechanism can be extended to configure a resource to be used "as reference", meaning that it is not copied to the workspace but that it's full path is saved in the session under a specific name and can be used from there. WPS4R only checks if the path exists and puts the path(s) into the R session as a fixed named variable (array or list), the list containing a mapping from "foldername" > "full path folder name", e.g. given the R script

# wps.import: raw/data

the R session variable created by WPS4R would be as follows:

wps4r.resources <- list("raw/data" = "/var/data/wps-processes/myProcess/raw/data"

Naturally the user will have to know the file names etc. within the resource for this to work, but that is already the case with normal resources.