xmlToS4 function

General mechanism for mapping an XML node to an S4 object

This generic function and its methods recursively process an XML node and its child nodes ( and theirs and so on) to map the nodes to S4 objects.

This is the run-time function that corresponds to the makeClassTemplate function.

xmlToS4(node, obj = new(xmlName(node)), ...)

Arguments

• node: the top-level XML node to convert to an S4 object
• obj: the object whose slots are to be filled from the information in the XML node
• ...: additional parameters for methods

Returns

The object obj whose slots have been modified.

Author(s)

Duncan Temple Lang

See Also

makeClassTemplate

Examples

txt = paste0("<doc><part><name>ABC</name><type>XYZ</type>',
              <cost>3.54</cost><status>available</status></part></doc>")
 doc = xmlParse(txt)

 setClass("part", representation(name = "character",
                                 type = "character",
                                 cost = "numeric",
                                 status= "character"))
 xmlToS4(xmlRoot(doc)[["part"]])