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

Description Usage Arguments Value Author(s) See Also Examples

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

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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

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 txt =
 "<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"]])

Example output

An object of class "part"
Slot "name":
[1] "ABC"

Slot "type":
[1] "XYZ"

Slot "cost":
[1] 3.54

Slot "status":
[1] "available"

XML documentation built on Aug. 19, 2018, 5:03 p.m.