public static void Main()
{
Store store = new MemoryStore();
store.Import(RdfReader.LoadFromUri(new Uri(example_foaf_file)));
// Dump out the data, for fun
using (RdfWriter writer = new RdfXmlWriter(Console.Out)) {
writer.Write(store);
}
Console.WriteLine("These are the people in the file:");
foreach (Statement s in store.Select(new Statement(null, rdftype, foafPerson)))
{
foreach (Resource r in store.SelectObjects(s.Subject, foafname))
{
Console.WriteLine(r);
}
}
Console.WriteLine();
Console.WriteLine("And here's RDF/XML just for some of the file:");
using (RdfWriter w = new RdfXmlWriter(Console.Out)) {
store.Select(new Statement(null, foafname, null), w);
store.Select(new Statement(null, foafknows, null), w);
}
Console.WriteLine();
}
public static void Main()
{
// Create the instance data
MemoryStore dataModel = new MemoryStore();
BNode me = new BNode("me");
BNode you = new BNode("you");
Entity rdfType = "http://www.w3.org/1999/02/22-rdf-syntax-ns#type";
Entity rdfsLabel = "http://www.w3.org/2000/01/rdf-schema#label";
Entity foafPerson = "http://xmlns.com/foaf/0.1/Person";
Entity foafAgent = "http://xmlns.com/foaf/0.1/Agent";
Entity foafName = "http://xmlns.com/foaf/0.1/name";
dataModel.Add(new Statement(me, rdfType, foafPerson));
dataModel.Add(new Statement(you, rdfType, foafPerson));
dataModel.Add(new Statement(me, foafName, (Literal)"John Doe"));
dataModel.Add(new Statement(you, foafName, (Literal)"Sam Smith"));
// Create the RDFS engine and apply it to the data model.
RDFS engine = new RDFS();
engine.LoadSchema(RdfReader.LoadFromUri(new Uri("http://xmlns.com/foaf/0.1/index.rdf")));
dataModel.AddReasoner(engine);
// Query the data model
// Ask for who are typed as Agents. Note that the people are
// typed as foaf:Person, and the schema asserts that foaf:Person
// is a subclass of foaf:Agent.
Console.WriteLine("Who are Agents?");
foreach (Entity r in dataModel.SelectSubjects(rdfType, foafAgent))
{
Console.WriteLine("\t" + r);
}
// Ask for the rdfs:labels of everyone. Note that the data model
// has foaf:names for the people, and the schema asserts that
// foaf:name is a subproperty of rdfs:label.
Console.WriteLine("People's labels:");
foreach (Statement s in dataModel.Select(new Statement(null, rdfsLabel, null)))
{
Console.WriteLine("\t" + s);
}
}
public static void Main(string[] args)
{
string uri = "http://www.mozilla.org/news.rdf";
if (args.Length > 0)
{
uri = args[0];
}
MemoryStore store = new MemoryStore();
// Here's one way...
store.Import(RdfReader.LoadFromUri(new Uri(uri)));
using (RdfWriter writer = new N3Writer(Console.Out))
store.Select(writer);
// Or....
RdfReader file = RdfReader.LoadFromUri(new Uri(uri));
file.Select(new StatementPrinter());
}
