1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/rdf_serialize.R
\name{rdf_serialize}
\alias{rdf_serialize}
\title{Serialize an RDF Document}
\usage{
rdf_serialize(rdf, doc = NULL, format = c("guess", "rdfxml", "nquads",
"ntriples", "turtle", "jsonld"), namespace = NULL,
prefix = names(namespace), base = getOption("rdf_base_uri",
"localhost://"), ...)
}
\arguments{
\item{rdf}{an existing rdf triplestore to extend with triples from
the parsed file. Default will create a new rdf object.}
\item{doc}{file path to write out to. If null, will write to character.}
\item{format}{rdf serialization format of the doc,
one of "rdfxml", "nquads", "ntriples", "turtle"
or "jsonld". If not provided, will try to guess based
on file extension and fall back on rdfxml.}
\item{namespace}{a named character containing the prefix to namespace bindings. \code{names(namespace)} are the prefixes, whereas \code{namespace} are the namespaces}
\item{prefix}{(optional) for backward compatibility. See \code{namespace}. It contains the matching prefixes to the namespaces in \code{namespace} and is set automatically if you provide \code{namespace} as a named character vector.}
\item{base}{the base URI to assume for any relative URIs (blank nodes)}
\item{...}{additional arguments to \code{redland::serializeToFile}}
}
\value{
rdf_serialize returns the output file path \code{doc} invisibly.
This makes it easier to use rdf_serialize in pipe chains with
\code{\link{rdf_parse}}.
}
\description{
Serialize an RDF Document
}
\examples{
infile <- system.file("extdata", "dc.rdf", package="redland")
out <- tempfile("file", fileext = ".rdf")
some_rdf <- rdf_parse(infile)
rdf_add(some_rdf,
subject = "http://www.dajobe.org/dave-beckett",
predicate = "http://www.w3.org/1999/02/22-rdf-syntax-ns#type",
object = "http://xmlns.com/foaf/0.1/Person")
rdf_serialize(some_rdf, out)
## With a namespace
rdf_serialize(some_rdf,
out,
format = "turtle",
namespace = c(dc = "http://purl.org/dc/elements/1.1/",
foaf = "http://xmlns.com/foaf/0.1/")
)
readLines(out)
}
|
