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#' @name SDMXComponents
#' @rdname SDMXComponents
#' @aliases SDMXComponents,SDMXComponents-method
#'
#' @usage
#' SDMXComponents(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 "SDMXComponents"
#'
#' @seealso \link{readSDMX}
#' @export
#'
SDMXComponents <- function(xmlObj, namespaces){
new("SDMXComponents",
Dimensions = dimensions.SDMXComponents(xmlObj, namespaces),
TimeDimension = timedimension.SDMXComponents(xmlObj, namespaces),
PrimaryMeasure = primarymeasure.SDMXComponents(xmlObj, namespaces),
Attributes = attributes.SDMXComponents(xmlObj, namespaces)
)
}
#get list of SDMXDimension
#=========================
dimensions.SDMXComponents <- function(xmlObj, namespaces){
dimensions <- NULL
strNs <- findNamespace(namespaces, "structure")
sdmxVersion <- version.SDMXSchema(xmlDoc(xmlObj), namespaces)
VERSION.21 <- sdmxVersion == "2.1"
dimensionsXML <- NULL
if(VERSION.21){
dimensionsXML <- getNodeSet(xmlDoc(xmlObj),
"//str:DimensionList/str:Dimension",
namespaces = c(str = as.character(strNs)))
}else{
dimensionsXML <- getNodeSet(xmlDoc(xmlObj),
"//str:Dimension",
namespaces = c(str = as.character(strNs)))
}
if(!is.null(dimensionsXML)){
dimensions <- lapply(dimensionsXML, SDMXDimension, namespaces)
}
return(dimensions)
}
#get SDMXTimeDimension
#=====================
timedimension.SDMXComponents <- function(xmlObj, namespaces){
timedimension <- NULL
sdmxVersion <- version.SDMXSchema(xmlDoc(xmlObj), namespaces)
VERSION.21 <- sdmxVersion == "2.1"
strNs <- findNamespace(namespaces, "structure")
timeDimXML <- NULL
if(VERSION.21){
timeDimXML <- getNodeSet(xmlDoc(xmlObj),
"//str:DimensionList/str:TimeDimension",
namespaces = c(str = as.character(strNs)))
}else{
timeDimXML <- getNodeSet(xmlDoc(xmlObj),
"//str:TimeDimension",
namespaces = c(str = as.character(strNs)))
}
if(length(timeDimXML) > 0){
timeDimensionXML <- timeDimXML[[1]]
timedimension <- SDMXTimeDimension(timeDimensionXML, namespaces)
}
return(timedimension)
}
#get SDMXPrimaryMeasure
#======================
primarymeasure.SDMXComponents <- function(xmlObj, namespaces){
primarymeasure <- NULL
sdmxVersion <- version.SDMXSchema(xmlDoc(xmlObj), namespaces)
VERSION.21 <- sdmxVersion == "2.1"
strNs <- findNamespace(namespaces, "structure")
if(VERSION.21){
measureXML <- getNodeSet(xmlDoc(xmlObj),
"//str:MeasureList/str:PrimaryMeasure",
namespaces = c(str = as.character(strNs)))
}else{
measureXML <- getNodeSet(xmlDoc(xmlObj),
"//str:PrimaryMeasure",
namespaces = c(str = as.character(strNs)))
}
if(length(measureXML) > 0){
measureXML <- measureXML[[1]]
primarymeasure <- SDMXPrimaryMeasure(measureXML, namespaces)
}
return(primarymeasure)
}
#get list of SDMXAttribute
#=========================
attributes.SDMXComponents <- function(xmlObj, namespaces){
attributes <- NULL
sdmxVersion <- version.SDMXSchema(xmlDoc(xmlObj), namespaces)
VERSION.21 <- sdmxVersion == "2.1"
strNs <- findNamespace(namespaces, "structure")
if(VERSION.21){
attributesXML <- getNodeSet(xmlDoc(xmlObj),
"//str:AttributeList/str:Attribute",
namespaces = c(str = as.character(strNs)))
}else{
attributesXML <- getNodeSet(xmlDoc(xmlObj),
"//str:Attribute",
namespaces = c(str = as.character(strNs)))
}
if(!is.null(attributesXML)){
attributes <- lapply(attributesXML, SDMXDimension, namespaces)
}
return(attributes)
}
#methods
#'@export
as.data.frame.SDMXComponents <- function(x, ...){
#dimensions
dimensions <- slot(x, "Dimensions")
dimensions.df <- as.data.frame(
do.call("rbind",
lapply(
dimensions,
function(x){
sapply(slotNames(x), function(elem){slot(x,elem)})
}
)
),stringsAsFactors = FALSE)
if(nrow(dimensions.df)>0){
dimensions.df <- cbind(component = "Dimension", dimensions.df,
stringsAsFactors = FALSE)
}
#time dimension
timeDimension <- slot(x, "TimeDimension")
timeDimension.df <- NULL
if(!is.null(timeDimension)){
timeDimension.df <- as.data.frame(
t(sapply(slotNames(timeDimension), function(elem){slot(timeDimension,elem)})),
stringsAsFactors = FALSE
)
timeDimension.df <- cbind(component = "TimeDimension", timeDimension.df,
stringsAsFactors = FALSE)
}
#primary measure
primaryMeasure <- slot(x, "PrimaryMeasure")
primaryMeasure.df <- as.data.frame(
t(sapply(slotNames(primaryMeasure), function(elem){slot(primaryMeasure,elem)})),
stringsAsFactors = FALSE
)
primaryMeasure.df <- cbind(component = "PrimaryMeasure", primaryMeasure.df,
stringsAsFactors = FALSE)
#attributes
attributes <- slot(x, "Attributes")
attributes.df <- as.data.frame(
do.call("rbind",
lapply(
attributes,
function(x){
sapply(slotNames(x), function(elem){slot(x,elem)})
}
)
),stringsAsFactors = FALSE)
if(nrow(attributes.df)>0){
attributes.df <- cbind(component = "Attribute", attributes.df,
stringsAsFactors = FALSE)
}
#output
df<- do.call("rbind.fill", list(dimensions.df, timeDimension.df,
primaryMeasure.df, attributes.df))
return(encodeSDMXOutput(df))
}
setAs("SDMXComponents", "data.frame",
function(from) as.data.frame.SDMXComponents(from))
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