public void GeneralUsage()
{
var rdf = RdfDataFactory.CreateNoLock();
//Self scoped blank node.
var graph = rdf.BlankSelf("self-blank");
//Blank node scoped to graph
var subject = rdf.Blank(graph);
//uri predicate, from Dublin core
var predicate = rdf.Uri(Terms.Title);
var @object = rdf.New("a title from my stuff");
//add quad to rdf data
rdf.Assert(graph, subject, predicate, @object);
//query
var quad = rdf.Query.Single();
//remove
rdf.Retract(quad);
Assert.AreEqual(0, rdf.Query.Count);
//replace.
rdf.Replace(new[] {
new Quad(graph, rdf.Blank(graph), rdf.Uri("a:pred"), rdf.New(123))
}, new[] { quad });
}
private void AddBasicProfile()
{
var rdf = RdfDataFactory.CreateNoLock();
if (!_data.Exists())
{
throw new Exception("Call start first");
}
var g = rdf.GetFullGraph("app:/profile#me");
var file = new NTripleFile(_data);
file.Read(g).Wait();
g.Update.For(g.Uri(_myProfile))
.With(RDFS.Label, out _).Add("My Name")
.Then()
.With(Terms.DateModified, out _).Add(DateTime.UtcNow)
.Then()
.With(Terms.Description, out _).Add("My basic profile data")
.Then()
.With(Terms.AlternativeTitle, out _).Add("ME");
file.Write(g).Wait();
}
private void AddFavorites()
{
var rdf = RdfDataFactory.CreateNoLock();
var g = rdf.GetFullGraph(_myProfile);
var file = new NTripleFile(_data);
file.Read(g).Wait();
//some favorites.
g.Update
.ForBlank("favs", out var favs)
.With(RDF.A, out _).Add(RDFS.List, out _)
.Then()
.List(g.Uri("https://duckduckgo.com/"),
g.Uri("https://inrupt.com/"),
g.Uri("https://github.com/"),
g.Uri("https://portal.azure.com/"))
.Then()
.For(g.Uri(_myProfile))
.With(g.Uri("app:favorites")).Add(favs)
//and I want to update the last modified.
.Then()
.With(Terms.DateModified, out _)
.Set(DateTime.UtcNow);
file.Write(g).Wait();
}
public void AddDataToGraph()
{
//Assert some data for a graph.
var rdf = RdfDataFactory.CreateNoLock();
//My base graph.
var baseGraph = rdf.GetFullGraph("app:base");
//The inbuilt system graph
var sys = rdf.GetSystem();
//Assert some data.
sys.Assert(baseGraph.Id, sys.Uri(RDF.A), sys.Uri("app:graphId"));
}
public void QueryWithConverters()
{
var rdf = RdfDataFactory.CreateNoLock();
var g = LoadSampleData(rdf, rdf.BlankSelf());
//Read all linkTo URI's.
var linkedUris = rdf.Query
.From(g)
.For(rdf, "x:me")
.With(rdf, "a:linkTo")
.GetUri()
.ToList();
Assert.IsTrue(linkedUris.Any(), "found some links");
}
private void NewBlankProfile()
{
var rdf = RdfDataFactory.CreateNoLock();
_data.EnsureDelete();
var g = rdf.GetFullGraph(_myProfile);
g.Update
.For(g.Uri(_myProfile))
.With(g.Uri(RDF.A))
.Add(g.Uri("app:/profile"));
new NTripleFile(_data).Write(g).Wait();
}
public void LoadAFile()
{
//Load a sample N-triple file
var rdf = RdfDataFactory.CreateNoLock();
var file = SampleFile();
var g = rdf.GetBlankGraph();
//Read file data into the graph g
new NTripleFile(file).Read(g).Wait();
var tripleCount = g.Query.Count;
Assert.IsTrue(tripleCount > 0, "Loaded some data");
}
public void ConverterWithNormalization()
{
var rdf = RdfDataFactory.CreateNoLock();
rdf.Update
.FromBlank(out var g1)
.For("x:me ", out _)
.With("a:Name", out _)
.Add("Fred");
var aboutMe = rdf.Query.From(g1)
.For(rdf, "x:me")
.ToList();
Assert.AreEqual(1, aboutMe.Count, "Found entry");
}
public void WriteAFile()
{
//Write a sample N-triple file
var file = Files.AppDataDir.GetFile(
nameof(UsingNTripleFile), nameof(WriteAFile) + ".nt");
file.EnsureDelete();
var rdf = RdfDataFactory.CreateNoLock();
var g = rdf.GetBlankGraph();
g.Assert(g.Uri("test:sub"), g.Uri("test:pred"), g.New("a name"));
new NTripleFile(file).Write(g).Wait();
Assert.IsTrue(file.Exists() && file.Length > 0,
"File created with some data");
}
public void CreateRdfStore()
{
//create default thread-locked version.
IRdfData rdf = RdfDataFactory.CreateDefault();
Assert.IsTrue(rdf is RdfDataThreadLock);
//create basic version.
rdf = RdfDataFactory.CreateNoLock();
Assert.IsTrue(rdf is RdfData);
//setup app singleton
RdfDataFactory.Init(RdfDataFactory.CreateNoLock());
//use singleton
rdf = RdfDataFactory.AppData;
Assert.IsNotNull(rdf);
}
public void CreateFromRdfData()
{
//Create new Full graph
var rdf = RdfDataFactory.CreateNoLock();
//Full graph with new labeled blank node
var myGraph = rdf.GetBlankGraph("test");
//A new graph; after I got my first graph.
var subject = rdf.Uri("test:sub");
rdf.Assert(rdf.Uri("test:g1"),
subject, rdf.Uri("test:int"), rdf.New(123));
var quadFromOther = myGraph.Query
.FirstOrNull(x => x.Subject == subject);
Assert.IsNull(quadFromOther);
}
public void ReadDefaultValue()
{
var rdf = RdfDataFactory.CreateNoLock();
LoadSettings(rdf);
//schema
var level = rdf.Uri("app:Log#Level");
//create full graph with baseSettings as main.
var g = rdf.GetBlankGraph("baseSettings");
//log level for Microsoft; using base / default.
g.Query
.For(rdf, "app:Logger#Microsoft").ToArray()
.Value <string>(level, out var logLevel)
.For();
Assert.AreEqual("Warning", logLevel, "Default is warning level");
}
public void FluentWithNodeCreator()
{
//Fluent builder with node creation
var rdf = RdfDataFactory.CreateNoLock();
rdf.Update
.From("g:aGraph", out var aGraph)
.For("x:me", out var me)
.With("a:name", out var name)
.Add("Fred", out var myName)
.Then()
//ignore created node
.With("a:age", out _)
.Add(123, out _);
Assert.AreEqual("g:aGraph", aGraph.Uri);
Assert.AreEqual("x:me", me.Uri);
Assert.AreEqual("a:name", name.Value);
Assert.AreEqual("Fred", myName.Value);
}
public void ConvertToSelfGraph()
{
//Convert from mixed to self only graph.
var rdf = RdfDataFactory.CreateNoLock();
//Mixed graph has main and some other graphs.
var myGraph = rdf.GetGraph(
rdf.BlankSelf("MainGraph"),
rdf.BlankSelf("Other1"),
rdf.BlankSelf("Other2"));
//Self only graph.
myGraph = myGraph.SelfOnly();
Assert.IsFalse(myGraph.Other.Any());
//Or directly get self-only from rdf.
myGraph = rdf.GetSelfGraph(rdf.BlankSelf("MainGraph"));
Assert.IsFalse(myGraph.Other.Any());
}
public void UseHelpersWithBuilders()
{
var rdf = RdfDataFactory.CreateNoLock();
//Use let to collect generated node(s)
rdf.Update
.From("g:aGraph", out var aGraph)
.For("x:me", out var me)
.With("a:name", out _).Let(out var name)
.Add("Fred")
.Then().Then().Then()
.From(aGraph)
.For(me).With(name)
.Add("Fredo", "fr", out var frName);
Assert.IsNotNull(aGraph);
Assert.IsNotNull(me);
Assert.IsNotNull(name);
Assert.IsNotNull(frName);
}
public void ReadActualValue()
{
var rdf = RdfDataFactory.CreateNoLock();
LoadSettings(rdf);
//schema
var level = rdf.Uri("app:Log#Level");
//create full graph with debugSettings as main.
var g = rdf.GetBlankGraph("debugSettings");
//log level for Microsoft; using base / default.
g.Query
.For(rdf, "app:Logger#Microsoft")
.ToArray()
.Value <string>(level, out var logLevel);
Assert.AreEqual("Information", logLevel,
"Using debug setting");
}
private void GetBasicProfile()
{
var rdf = RdfDataFactory.CreateNoLock();
new NTripleFile(_data).Read(rdf.GetFullGraph(_myProfile)).Wait();
var profile = rdf.Query.For(rdf.Uri(_myProfile));
profile
.Value <DateTime>(rdf.Uri(Terms.DateModified), out var lastModified)
.Value <string>(rdf.Uri(RDFS.Label), out var name)
//The possible null alternate name
.ValueOptional <string>(rdf.Uri(Terms.AlternativeTitle), out var altName);
var bestName = altName is null ? name : altName.Value;
var welcome =
$"Hello {bestName}, " +
$"your profile was last updated {lastModified.ToShortDateString()}";
Assert.IsTrue(welcome.Contains("ME"), "Has my alt name");
}
public void ReadFromStart()
{
//Graph data ordered.
var rdf = RdfDataFactory.CreateNoLock();
var g1 = rdf.GetBlankGraph("g1");
var g2 = rdf.GetBlankGraph("g2");
var s = rdf.Uri("app:test");
var p = rdf.Uri("app:count");
var name = rdf.Uri(RDFS.Label);
g1.Assert(s, p, g1.New(1))
.Assert(s, name, g1.New("OriginalName"), out var qName);
g2.Assert(s, p, g2.New(2));
//Get Full data
g2 = rdf.GetFullGraph(g2.Id);
var theCount = g2.Query
.For(s).With(p)
.Get <int>().First();
Assert.AreEqual(2, theCount);
//isolated updates.
//changing dependent graph g1:
g1.Retract(qName);
g1.Assert(s, name, g1.New("Updated"));
//pre-existing g2 uses original g1 data.
var theName = g2.Query
.For(s).With(name).Get <string>().First();
Assert.AreEqual("OriginalName", theName);
}
private void GetMyFavorites()
{
var rdf = RdfDataFactory.CreateNoLock();
var g = rdf.GetFullGraph(_myProfile);
new NTripleFile(_data)
.Read(g)
.Wait();
//the list of favs.
var favsList = g.Query
.For(g.Id)
.With(g.Uri("app:favorites"))
.GetBlanks()
.First();
//get list items.
var myFavorites = new RdfsList(rdf, g)
.GetList(favsList).ToArray();
Assert.IsTrue(myFavorites.Length > 0, "Got some favorites");
}
