public async Task List_()
{
var loader = new RdfDataFetcher(_rdf);
var g = await loader.Load(Files.TestData.Sample1, Files.TestData.Brazil);
Assert.AreEqual(1, g.Other.Length, "Loaded the data files.");
}
public async Task Load_()
{
var loader = new RdfDataFetcher(_rdf);
var brazil = await loader.Load(Files.TestData.Brazil);
Assert.IsTrue(brazil.Query.Count > 0, "Loaded some data");
}
public async Task Purge_()
{
var loader = new RdfDataFetcher(_rdf);
var g = await loader.Load(Files.TestData.Sample1);
loader.Purge(Files.TestData.Sample1);
Assert.IsFalse(loader.List().Any(), "backing file removed.");
_rdf.GetGraph(g.Id);
}
public async Task Close_()
{
var loader = new RdfDataFetcher(_rdf);
var sample = await loader.Load(Files.TestData.Sample1);
var preClose = loader.List().Count;
loader.Close(sample);
var postClose = loader.List().Count;
Assert.IsTrue(postClose < preClose, "File closed");
Assert.IsTrue(sample.Query.Any(), "But data kept");
}
public async Task Save_()
{
var file = Files.TestData.Sample1.CopyTo(
Files.AppDataDir.GetFolder(nameof(RdfDataFetcherTests)), true);
var loader = new RdfDataFetcher(_rdf);
var g = await loader.Load(file);
var preUpdate = g.Query.Count;
g.Assert(g.Blank(), g.Uri("app:isTest"), g.New(true));
await loader.Save(g);
g.Clear();
await loader.Load(file);
var postUpdate = g.Query.Count;
Assert.IsTrue(postUpdate > preUpdate);
}
/// <summary> /// Disconnect graph from fetcher /// (existing data remains). /// </summary> public static RdfDataFetcher Close(this RdfDataFetcher self, Graph g) => self.Close(self.Get(g.Id) ?? throw new ErrorNoBackingFile(g.Id));
/// <summary> /// Disconnect file(s) from fetcher (existing data remains). /// </summary> public static RdfDataFetcher Close(this RdfDataFetcher self, params FileInfo[] files) => self.Close(files.Select(x => Rdf(self).New(x)).ToArray());
/// <summary>Save previously loaded graph </summary> /// <exception cref="ErrorNoBackingFile"></exception> public static async Task <RdfDataFetcher> Save(this RdfDataFetcher self, Graph g) => await self.Save(g.Id);
public static Node <FileInfo>?Get(this RdfDataFetcher self, Graph g) => self.Get(g.Id);
/// <summary>Try get loaded graph</summary> public static Graph?Get(this RdfDataFetcher self, FileInfo file) => self.Get(Rdf(self).New(file));
/// <summary>
/// (re)loads file data; existing graph data is overwritten.
/// </summary>
/// <returns>
/// A Graph with all data, loaded graphs first.
/// </returns>
public static async Task <Graph> Load
(this RdfDataFetcher self, params FileInfo[] file)
=> await self.Load(file.Select(x => Rdf(self).New(x)).ToArray());
