xmlToS4: General mechanism for mapping an XML node to an S4 object

In XML: Tools for Parsing and Generating XML Within R and S-Plus

General mechanism for mapping an XML node to an S4 object

Description

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.

Usage

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

Value

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"]])

XML documentation built on April 4, 2025, 5:17 a.m.