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

xmlToS4 {XML} | R Documentation

## 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"]])

[Package XML version 3.99-0.3 Index]