WIP: first preparations (coscine/issues#2084)

src/SQL2Linked/Implementations/ResourceStructuralData.cs

 using Coscine.Database.DataModel;
 using Coscine.Database.Models;
+using Coscine.Configuration;
 using VDS.RDF;
 
 namespace SQL2Linked.Implementations
 {
     public class ResourceStructuralData : StructuralData<Resource, ResourceModel>
     {
+        public readonly Uri org = new("http://www.w3.org/ns/org#");
+        public readonly Uri dcat = new("http://www.w3.org/ns/dcat#");
+        public readonly Uri dcterms = new("http://purl.org/dc/terms/");
+        public readonly Uri acl = new("http://www.w3.org/ns/auth/acl#");
+        public readonly Uri foaf = new("http://xmlns.com/foaf/0.1/");
+        public readonly Uri pim = new("http://www.w3.org/ns/pim/space#");
+        public readonly Uri RdfType = new("http://www.w3.org/1999/02/22-rdf-syntax-ns#type");
+
+       
+
+       
+        
+
         public override IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<Resource> entries)
         {
-            // ToDo: Implement
-            throw new NotImplementedException();
+            var graphs = new List<IGraph>();
+            string ResourceUrlPrefix = "https://hdl.handle.org/" + Prefix;
+            
+            foreach (var entry in entries)
+            {
+                var resourceTypeGraphName = $"{ResourceUrlPrefix}/{entry.Id}";
+                //var graphA = RdfStoreConnector.CreateNamedGraph(resourceTypeGraphName);
+                var graph = RdfStoreConnector.GetGraph(resourceTypeGraphName);
+
+
+                /*graph.Assert(
+                        new Triple(
+                            graph.CreateUriNode(new Uri(resourceTypeGraphName)),
+                            graph.CreateUriNode(RdfType),
+                            graph.CreateUriNode(new Uri(dcat, "Catalog"))
+                        )
+                );*/
+                AssertToGraphUriNode(graph, resourceTypeGraphName, RdfType, new Uri(dcat + "Catalog"));
+                graphs.Add(graph);
+
+            }
+            return graphs;
+        }
+
+        public void AssertToGraphUriNode(IGraph graph, string graphSubject, Uri graphPredicate, Uri graphObject)
+        {
+            graph.Assert(
+                new Triple(
+                    graph.CreateUriNode(new Uri(graphSubject)),
+                    graph.CreateUriNode(graphPredicate),
+                    graph.CreateUriNode(graphObject)
+                )
+            );
+        }
+
+        public void AssertToGraphLiteralNode(IGraph graph, Uri graphSubject, Uri graphPredicate, string graphObject)
+        {
+
         }
     }
 }
\ No newline at end of file

src/SQL2Linked/Program.cs

@@ -9,7 +9,7 @@ if (dummyMode)
 
 Console.WriteLine("\nBegin SQL 2 Linked Data migration");
 
-var roleStructuralData = new RoleStructuralData();
+/*var roleStructuralData = new RoleStructuralData();
 roleStructuralData.Migrate(dummyMode);
 
 var userStructuralData = new UserStructuralData();
@@ -19,7 +19,7 @@ var resourceTypeStructuralData = new ResourceTypeStructuralData();
 resourceTypeStructuralData.Migrate(dummyMode);
 
 var projectStructuralData = new ProjectStructuralData();
-projectStructuralData.Migrate(dummyMode);
+projectStructuralData.Migrate(dummyMode);*/
 
 var resourceStructuralData = new ResourceStructuralData();
 resourceStructuralData.Migrate(dummyMode);

src/SQL2Linked/StructuralData.cs

@@ -10,12 +10,14 @@ namespace SQL2Linked
         public T Model { get; init; }
         public ConsulConfiguration Configuration { get; init; }
         public RdfStoreConnector RdfStoreConnector { get; init; }
+        public static string Prefix { get; set; }
 
         public StructuralData()
         {
             Configuration = new ConsulConfiguration();
             RdfStoreConnector = new RdfStoreConnector(Configuration.GetStringAndWait("coscine/local/virtuoso/additional/url"));
             Model = new T();
+            Prefix = Configuration.GetStringAndWait("coscine/global/epic/prefix");
         }
 
         public abstract IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<S> entries);