1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#' @name SDMXCode
#' @rdname SDMXCode
#' @aliases SDMXCode,SDMXCode-method
#'
#' @usage
#' SDMXCode(xmlObj, namespaces)
#'
#' @param xmlObj object of class "XMLInternalDocument derived from XML package
#' @param namespaces object of class "data.frame" given the list of namespace URIs
#' @return an object of class "SDMXCode"
#'
#' @seealso \link{readSDMX}
#'
SDMXCode <- function(xmlObj, namespaces){
messageNs <- findNamespace(namespaces, "message")
strNs <- findNamespace(namespaces, "structure")
sdmxVersion <- version.SDMXSchema(xmlDoc(xmlObj), namespaces)
VERSION.21 <- sdmxVersion == "2.1"
refNs <- strNs
if(VERSION.21){
comNs <- findNamespace(namespaces, "common")
refNs <- comNs
}
#attributes
#=========
id <- NULL
if(VERSION.21){
id <- xmlGetAttr(xmlObj, "id")
}else{
id <- xmlGetAttr(xmlObj, "value")
}
if(is.null(id)) id <- as.character(NA)
urn = xmlGetAttr(xmlObj, "urn")
if(is.null(urn)) urn <- as.character(NA)
parentCode = xmlGetAttr(xmlObj, "parentCode")
if(is.null(parentCode)) parentCode <- as.character(NA)
#elements
#========
# Labels - name /description (multi-languages)
codeLabelsXML <- NULL
if(VERSION.21){
codeLabelsXML <- getNodeSet(xmlDoc(xmlObj),
"//ns:Name", namespaces = refNs)
}else{
codeLabelsXML <- getNodeSet(xmlDoc(xmlObj),
"//ns:Description", namespaces = refNs)
}
codeLabels <- list()
if(length(codeLabelsXML) > 0){
codeLabels <- new.env()
sapply(codeLabelsXML,
function(x){
lang <- xmlGetAttr(x,"xml:lang")
if(is.null(lang)) lang <- xmlGetAttr(x,"lang")
if(is.null(lang)) lang <- "default"
codeLabels[[lang]] <- xmlValue(x)
})
codeLabels <- as.list(codeLabels)
}
#instantiate the object
obj<- new("SDMXCode",
#attributes
id = id, #equivalent to "value" in SDMX 2.0
urn = urn,
parentCode = parentCode,
#elements
label = codeLabels
)
}
|
