使用 DotNetRdf 和 Virtuoso Manager 保存数据

Question

我试着按照 dotnetrdf documentation to store data in a Virtuoso Server.

这是我的做法：

public void LoadGraph()
{
    //Create our Storage Provider - this example uses Virtuoso Universal Server
    VirtuosoManager virtuoso = new VirtuosoManager("creativeartefact.org", 1111, "DB", "user", "password");

    //Load the Graph into an ordinary graph instance first
    Graph g = new Graph();
    virtuoso.LoadGraph(g, new Uri("http://creativeartefact.org/"));

    //Then place the Graph into a wrapper
    StoreGraphPersistenceWrapper wrapper = new StoreGraphPersistenceWrapper(virtuoso, g);

    //Now make changes to this Graph as desired...
    g.Assert(g.CreateUriNode(new Uri("http://creativeartefact.org/testB/123")), g.CreateUriNode("rdf:Type"), g.CreateUriNode(new Uri("http://creativeartefact.org/ontology/Artist")));
    wrapper.Flush(); // mandatory, but doesn't help either

    //Remember to call Dispose() to ensure changes get persisted when you are done
    wrapper.Dispose();
}

但是 - 没有保存数据，也没有抛出异常。插入三元组后，三元组计数按预期增加了 1，但它并没有进入数据库。当我重新运行代码时，三次计数恢复到旧值。用户帐户具有 write 权限。

知道我错过了什么吗？

提前致谢，
弗兰克

Answer 1

您没有完整阅读正在关注的文档。

The easiest way to save a Graph to a Triple Store is to use the SaveGraph() method of an IStorageProvider implementation, see Triple Store Integration for more details.

使用 DotNetRdf 和 Virtuoso Manager 保存数据

Persist Data with DotNetRdf and Virtuoso Manager

virtuoso

dotnetrdf