public void QueryMatchesUpdateForm()
{
var rdf = RdfDataFactory.CreateDefault();
var g = rdf.BlankSelf();
var subject = rdf.Blank(g, "test");
var predicate = rdf.Uri(RDF.A);
var value = rdf.Uri("test:query#basic");
//add some data
rdf.Update
.From(g)
.For(subject)
.With(predicate)
.Add(value);
//query some data.
var qry = rdf.Query;
var uriValue = qry
.From(g)
.For(subject)
.With(predicate)
.GetUri(out var result) //inline get with result
.GetUri(); //get with select.
Assert.AreEqual(value.Uri, result.Single(), "from inline select");
Assert.AreEqual(value.Uri, uriValue.Single(), "from query select");
}
public void AssertVsFluent()
{
//Assert vs Fluent
var rdf = RdfDataFactory.CreateDefault();
var myGraph = rdf.Uri("g:other");
var linkTo = rdf.Uri("a:linkTo");
//link to other graph: using assert
var g = rdf.BlankSelf();
rdf.Assert(g, g, linkTo, myGraph);
//link to other graph: using fluent
rdf.Update
.From(rdf.BlankSelf()) //a graph
.Let(out var demo) //inline graph.
.For(demo) //subject is demo
.With(linkTo) //predicate is linkTo
.Add(myGraph); //Assert
var links = rdf.Query.With(linkTo).ToList();
Assert.IsTrue(links.Any(), "Have a link");
}
public void Go()
{
//Create a store
var rdf = RdfDataFactory.CreateDefault();
//new graph node.
var sample = rdf.GetBlankGraph("SampleDataGraph");
//load some data.
// n-triple file read / write.
new NTripleFile(_sampleData).Read(sample).Wait();
//find some data.
var brazil = rdf.Uri(SubjectId);
var name = sample.Query
.For(brazil)
.With(rdf, RDFS.Label)
.Get <string>()
.FirstOrNull();
Assert.IsNotNull(name);
//Add some data.
var haveVisited = rdf.Uri("app:haveVisited");
sample.Update
.For(brazil)
.With(haveVisited)
.Add(false);
//Save some data
new NTripleFile(Files.AppDataDir.GetFile("Updated.nt"))
.Write(sample).Wait();
}
public void Stats_()
{
var rdf = RdfDataFactory.CreateDefault();
var g = rdf.GetBlankGraph();
new NTripleFile(Files.TestData.Brazil)
.Read(g).Wait();
var stats = rdf.Stats();
Assert.AreEqual(80, stats.TotalNodes - stats.BlankNodes,
"Total non blank nodes");
Assert.AreEqual(1, stats.AutoNodes, "Graph is only auto blank");
Assert.AreEqual(31 + 1, stats.BlankNodes,
"Total blank nodes (plus graph itself)");
}
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 IsolatedFromOtherGraphs()
{
var rdf = RdfDataFactory.CreateDefault();
//Get 2 graphs.
var g1 = rdf.GetFullGraph(rdf.BlankSelf("graph1"));
var g2 = rdf.GetFullGraph(rdf.BlankSelf("graph2"));
//update g2.
g2.Assert(g2.Uri("app:me"), g2.Uri("app:update"), g2.New(true));
//graph1 isolated from change in graph2
Assert.AreEqual(0, g1.Query.Count,
"Update in graph2 not reflected in graph1 snapshot");
//graph2 has the update ready to use.
Assert.AreEqual(1, g2.Query.Count,
"Update in graph 2 is available");
}
public void LinksInMyGraph()
{
var rdf = RdfDataFactory.CreateDefault();
var myGraph = rdf.Uri("x:myGraph");
LoadSampleData(rdf, myGraph);
var linkedTo = rdf.Uri("a:linkTo");
//all quads in myGraph, with linkedTo predicate
var linkedUris = rdf.Query
.From(myGraph)
.With(linkedTo)
//select the quad object nodes that are URI's
.GetUri()
.ToList();
Assert.IsTrue(linkedUris.Any(), "found some links");
}
public void LinksAndNamedInMyGraph()
{
var rdf = RdfDataFactory.CreateDefault();
var myGraph = rdf.Uri("x:myGraph");
LoadSampleData(rdf, myGraph);
var linkedTo = rdf.Uri("a:linkTo");
var name = rdf.Uri("a:name");
//Select all links and names within graph g.
var linksAndNames = rdf.Query
.From(myGraph)
.With(p => p == linkedTo || p == name)
.Select(x => x.Object)
.ToList();
Assert.IsTrue(linksAndNames.Any(x => x is Node <string>), "Has literals");
Assert.IsTrue(linksAndNames.Any(x => x is UriNode), "Has urls");
}
public void LoadFromMultipleThreads()
{
var rdf = RdfDataFactory.CreateDefault();
var data = Files.TestDataDir.GetFile("brazil.nt");
var tasks = new[] {
DelayedDataRead(CopyDataFile(data, 1), rdf, 1),
DelayedDataRead(CopyDataFile(data, 1), rdf, 2),
DelayedDataRead(CopyDataFile(data, 1), rdf, 3),
DelayedDataRead(CopyDataFile(data, 1), rdf, 4),
};
//start in fast-loop so they run at same time.
foreach (var item in tasks)
{
item.Start();
}
Task.WaitAll(tasks);
var g1 = rdf.GetSelfGraph(rdf.BlankSelf("g1"));
var g2 = rdf.GetSelfGraph(rdf.BlankSelf("g2"));
var g3 = rdf.GetSelfGraph(rdf.BlankSelf("g3"));
var g4 = rdf.GetSelfGraph(rdf.BlankSelf("g4"));
//138 quads per graph.
Assert.AreEqual(138, g1.Query.Count, "Count for graph-1");
Assert.AreEqual(138, g2.Query.Count, "Count for graph-2");
Assert.AreEqual(138, g3.Query.Count, "Count for graph-3");
Assert.AreEqual(138, g4.Query.Count, "Count for graph-4");
//the nodes in doc, and extras for graphs.
var expectedCount = 80 + //normal nodes.
32 * tasks.Length; //blanks from doc and graph.
var stats = rdf.Stats();
Assert.AreEqual(expectedCount, stats.TotalNodes, "no dupe nodes");
}
