datapack (version 1.3.1)

updateXML: Update selected elements of the XML content of a DataObject

Description

The data content of the DataObject is updated by using the xpath argument to locate the elements to update with the character value specified in the replacement argument.

Usage

updateXML(x, ...)
# S4 method for DataObject
updateXML(x, xpath = as.character(NA),
  replacement = as.character(NA), ...)

Arguments

x

A DataObject instance

...

Additional parameters (not yet used)

xpath

A character value specifying the location in the XML to update.

replacement

A character value that will replace the elements found with the xpath.

Value

The modified DataObject

See Also

DataObject-class

Examples

# NOT RUN {
library(datapack)
dataObj <- new("DataObject", format="text/csv", file=sampleData)
sampleEML <- system.file("extdata/sample-eml.xml", package="datapack")
dataObj <- updateMetadata(dataObj, xpath="", replacement=)
# }
# NOT RUN {
library(datapack)
# Create the metadata object with a sample EML file
sampleMeta <- system.file("./extdata/sample-eml.xml", package="datapack")
metaObj <- new("DataObject", format="eml://ecoinformatics.org/eml-2.1.1", file=sampleMeta)
# In the metadata object, replace "sample-data.csv" with 'sample-data.csv.zip'
xp <- sprintf("//dataTable/physical/objectName[text()=\"%s\"]", "sample-data.csv")
metaObj <- updateXML(metaObj, xpath=xp, replacement="sample-data.csv.zip")
# }