Nothing
# safe version of setMethod().
tryMethod = function(f, signature, definition, generic) {
# try a first time.
catch = try(setMethod(f, signature, definition), silent = TRUE)
if (is(catch, "try-error")) {
# if it failed, create a generic function ...
setGeneric(f, generic)
# ... and then try again.
setMethod(f, signature, definition)
}#THEN
}#TRYMETHOD
# set up hooks, S4 classes and initialize global variables.
.onLoad = function(lib, pkg) {
bnlearn.classes = c("bn", "bn.fit", available.classifiers)
# re-register S4 methods (from .GlobalEnv, as we would do manually in an
# interactive session.
setHook(packageEvent("graph", "attach"), action = "append",
function(...) {
for (cl in bnlearn.classes) {
setMethod("nodes", cl, where = .GlobalEnv,
function(object) .nodes(object))
setMethod("nodes<-", cl, where = .GlobalEnv,
function(object, value) .relabel(object, value))
setMethod("degree", cl, where = .GlobalEnv,
function(object, Nodes) .degree(object, Nodes))
}#FOR
})
setHook(packageEvent("gRbase", "attach"), action = "append",
function(...) {
for (cl in bnlearn.classes) {
setMethod("nodes", cl, where = .GlobalEnv,
function(object) .nodes(object))
}#FOR
})
setHook(packageEvent("BiocGenerics", "attach"), action = "append",
function(...) {
for (cl in bnlearn.classes) {
setMethod("score", cl, where = .GlobalEnv,
function(x, data, type = NULL, ..., by.node = FALSE, debug = FALSE)
network.score(x = x, data = data, type = type, ...,
by.node = by.node, debug = debug))
}#FOR
})
setHook(packageEvent("igraph", "attach"), action = "append",
function(...) {
registerS3method("as.igraph", class = "bn", method = as.igraph.bn,
envir = asNamespace("igraph"))
registerS3method("as.igraph", class = "bn.fit", method = as.igraph.bn.fit,
envir = asNamespace("igraph"))
})
# make bnlearn's classes known to S4.
setClass("bn")
setClass("bn.fit")
setClass("bn.naive")
setClass("bn.tan")
# add the methods (if no generic is present, create it) .
for (cl in bnlearn.classes) {
tryMethod("nodes", cl,
definition = function(object) .nodes(object),
generic = function(object, ...) standardGeneric("nodes"))
tryMethod("nodes<-", cl,
definition = function(object, value) .relabel(object, value),
generic = function(object, value) standardGeneric("nodes<-"))
tryMethod("degree", cl,
definition = function(object, Nodes) .degree(object, Nodes),
generic = function(object, Nodes, ...) standardGeneric("degree"))
tryMethod("score", cl,
definition = function(x, data, type = NULL, ..., by.node = FALSE,
debug = FALSE)
network.score(x = x, data = data, type = type, ...,
by.node = by.node, debug = debug),
generic = function (x, ...) standardGeneric("score"))
}#FOR
# load the shared library.
library.dynam("bnlearn", package = pkg, lib.loc = lib)
# initialize stuff at the C level.
.Call(call_onLoad)
}#.ONLOAD
# clean up global variables.
.onUnload = function(libpath) {
# initialize stuff at the C level.
.Call(call_onUnload)
# unload the shared library.
library.dynam.unload("bnlearn", libpath = libpath)
}#ON.UNLOAD
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