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A Node has an associated type corresponding to the RDF component that it is representing. The list of possible types is "resource", "literal" or "blank".

Usage

# S4 method for Node
initialize(.Object, world, literal, uri, blank, datatype_uri, language)

Arguments

.Object

the Node object to be initialized

world

a World object

literal

a literal character value to be assigned to the node

uri

a uri character value to be assigned to the node

blank

a blank node identifier to be assigned to the node

datatype_uri

a uri used to specify the datatype of a literal node, i.e. "http://www.w3.org/2001/XMLSchema#string"

language

a character value specifying the RDF language tag (excluding the "@" symbol), i.e. "fr"

Value

the Node object

Details

The url=' and 'literal=' arguments determine which type of Node is created. The Node type affects how the Node is processed in serialization, for example a Node created with 'node1 <- new("Node", literal="http://www.example.com")' is processed differently that a Node created with 'node1 <- new("Node", url="http://www.example.com")', with the former being processed as an RDF literal and the latter processed as an RDF resource.

Note

Refer to https://www.w3.org/TR/rdf11-concepts information on language tags.