The sharpRDFa is a .Net RDFa parser which can generates triples from HTML/XHTML documents. Results are represented in a form of Collection of RDF triples that can be used to store directly in a triple store.
Sample Input File (HTML5_RDFa_1.1.html)
<html prefix="dc: http://purl.org/dc/elements/1.1/ foaf: http://xmlns.com/foaf/0.1/" lang="en">
<head>
<title>John's Home Page</title>
<link rel="profile" href="http://www.w3.org/1999/xhtml/vocab" />
<base href="http://example.org/john-d/" />
<meta property="dc:creator" content="Jonathan Doe" />
<link rel="foaf:primaryTopic" href="http://example.org/john-d/#me" />
</head>
<body about="http://example.org/john-d/#me">
<h1>John's Home Page</h1>
<p>My name is <span property="foaf:nick">John D</span> and I like
<a href="http://www.neubauten.org/" rel="foaf:interest"
lang="de">Einstürzende Neubauten</a>.
</p>
<p>
My <span rel="foaf:interest" resource="urn:ISBN:0752820907">favorite
book is the inspiring <span about="urn:ISBN:0752820907"><cite
property="dc:title">Weaving the Web</cite> by
<span property="dc:creator">Tim Berners-Lee</span></span></span>.
</p>
</body>
</html>Parse RDFa from a file
var parser = new RDFaParser();
var triples = parser.ParseRDFTriplesFromFile("Resource\\HTML5_RDFa_1.1.html");
foreach (var rdfTriple in triples)
{
Console.WriteLine(string.Format("<{0}> <{1}> <{2}>", rdfTriple.Subject, rdfTriple.Predicate, rdfTriple.Objecto));
}Console output
<http://example.org/john-d/> <http://purl.org/dc/elements/1.1/creator> <Jonathan Doe>
<http://example.org/john-d/> <http://xmlns.com/foaf/0.1/primaryTopic> <http://example.org/john-d/#me>
<http://example.org/john-d/#me> <http://xmlns.com/foaf/0.1/nick> <John D>
<http://example.org/john-d/#me> <http://xmlns.com/foaf/0.1/interest> <http://www.neubauten.org/>
<http://example.org/john-d/#me> <http://xmlns.com/foaf/0.1/interest> <urn:ISBN:0752820907>
<urn:ISBN:0752820907> <http://purl.org/dc/elements/1.1/title> <Weaving the Web>
<urn:ISBN:0752820907> <http://purl.org/dc/elements/1.1/creator> <Tim Berners-Lee>
- Support Parse from url and parse from file
- Parser out put can be saved in NTriples fromat and RDF xml format
- Extensive unit tests were written using NUnit test framework
.Net Framework 4.0 or newer
The sharpRDFa library and tests are licensed under the BSD-3-Clause license.
- Syntax and processing rules for embedding RDF through attributes - http://www.w3.org/TR/rdfa-core/
- Rich Structured Data Markup for Web Documents - http://www.w3.org/TR/rdfa-primer/