New: Migrate resource structured data to linked data

coscine/issues#2084

src/SQL2Linked/Implementations/ResourceStructuralData.cs

 using Coscine.Database.DataModel;
 using Coscine.Database.Models;
+using Coscine.Configuration;
 using VDS.RDF;
+using VDS.RDF.Query;
 
 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 rdf = new("http://www.w3.org/1999/02/22-rdf-syntax-ns#");
+        public readonly Uri cosc = new("https://purl.org/coscine/");
+        private VisibilityModel VisibilityModel = new VisibilityModel();
+        private ProjectResourceModel ProjectResourceModel =new ProjectResourceModel();
+
         public override IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<Resource> entries)
         {
-            // ToDo: Implement
-            throw new NotImplementedException();
+            IEnumerable<Visibility> visibilities = VisibilityModel.GetAll();
+            IEnumerable<ProjectResource> projectResources = ProjectResourceModel.GetAll();
+
+            var graphs = new List<IGraph>();
+            string resourceUrlPrefix = "https://hdl.handle.net/" + Prefix;
+            
+            foreach (var entry in entries)
+            {
+                var resourceGraphName = $"{resourceUrlPrefix}/{entry.Id}";
+
+                var graph = new Graph();
+                graph.BaseUri = new Uri(resourceGraphName);
+
+                AssertToGraphUriNode(graph, resourceGraphName, rdf + "type", dcat + "Catalog");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {rdf}type {dcat}Catalog'. ");
+
+                AssertToGraphUriNode(graph, resourceGraphName, rdf + "type", pim + "Storage");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {rdf}type {pim}Storage'. ");
+
+                AssertToGraphUriNode(graph, resourceGraphName, dcat + "service", cosc + $"resourcetype/{entry.TypeId}");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcat}service {cosc}resourcetype/{entry.TypeId}'. ");
+
+                AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "title", entry.ResourceName);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}title {entry.ResourceName}'. ");
+
+                AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "alternative", entry.DisplayName);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}alternative {entry.DisplayName}'. ");
+
+                foreach (var visibility in visibilities)
+                {
+                    if (entry.VisibilityId == visibility.Id && visibility.DisplayName.Contains("Public"))
+                    {
+                        AssertToGraphUriNode(graph, resourceGraphName, cosc + "terms/resource#visibility", cosc + $"terms/visibility#public");
+                        Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {cosc}terms/resource#visibility {cosc}terms/visibility#public'. ");
+                        break;
+                    }
+                    else if (entry.VisibilityId == visibility.Id && visibility.DisplayName.Contains("Project Members"))
+                    {
+                        AssertToGraphUriNode(graph, resourceGraphName, cosc + "terms/resource#visibility", cosc + $"terms/visibility#projectMember");
+                        Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {cosc}terms/resource#visibility {cosc}terms/visibility#projectMember'. ");
+                        break;
+                    }
+                }
+
+                var listKeywords = entry.Keywords.Split(';').ToList();
+                foreach (var keyword in listKeywords)
+                {
+                    AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "subject", keyword);
+                    Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}subject {keyword}'. ");
+                }
+
+                AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "rights", entry.UsageRights);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}rights {entry.UsageRights}'. ");
+
+                AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "description", entry.Description);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}description {entry.Description}'. ");
+
+                AssertToGraphUriNode(graph, resourceGraphName, dcterms + "conformsTo", entry.ApplicationProfile);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}conformsTo {entry.ApplicationProfile}'. ");
+
+                AssertToGraphLiteralNode(graph, resourceGraphName,cosc + "terms/resource#fixedValues", entry.FixedValues);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {cosc}terms/resource#fixedValues {entry.FixedValues}'. ");
+
+                AssertToGraphUriNode(graph, resourceGraphName, dcterms + "creator", cosc + $"users/{entry.Creator}");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}creator {cosc}users/{entry.Creator}'. ");
+
+                AssertToGraphLiteralNode(graph, resourceGraphName, cosc + "terms/resource#archived", entry.Archived.ToString(), new Uri("http://www.w3.org/2001/XMLSchema#boolean"));
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {cosc}terms/resource#archived {entry.Archived}'. ");
+
+                AssertToGraphUriNode(graph, resourceGraphName, foaf + "homepage", resourceGraphName);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {foaf}homepage {resourceGraphName}'. ");
+
+                SparqlParameterizedString cmdString = new SparqlParameterizedString
+                {
+                    CommandText = "SELECT DISTINCT ?g " +
+                                    "WHERE {" +
+                                        "GRAPH ?g { ?s ?p ?o } . " +
+                                        "FILTER(STRSTARTS(STR(?s), \"" + resourceGraphName + "@\"))" +
+                                     "}"
+                };
+
+                var resultSet = QueryEndpoint.QueryWithResultSet(cmdString.ToString());
+
+                foreach(var result in resultSet)
+                {
+                    AssertToGraphUriNode(graph, resourceGraphName, dcat + "catalog", result[0].ToString());
+                    Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcat}catalog {result[0].ToString()}'. ");
+                }
+
+                var blankNode= graph.CreateBlankNode(entry.Id.ToString());
+
+                AssertToGraphBlankAndUriNode(graph, blankNode, rdf + "type", acl + "Authorization");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {rdf}type {acl}Authorization'. ");
+
+                foreach (var projectResource in projectResources)
+                {
+                    if (entry.Id == projectResource.ResourceId)
+                    {
+                        AssertToGraphBlankAndUriNode(graph, blankNode, acl + "agentGroup", $"{resourceUrlPrefix}/{projectResource.ProjectId}");
+                        Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}agentGroup {resourceUrlPrefix}/{projectResource.ProjectId}'. ");
+                        break;
+                    }
+                }
+
+                AssertToGraphBlankAndUriNode(graph, blankNode, acl + "accessTo", resourceGraphName);
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}accessTo {resourceGraphName}'. ");
+
+                AssertToGraphBlankAndUriNode(graph, blankNode, acl + "mode", acl + "Control");
+                Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}accessTo {acl}Control'. ");
+
+                graphs.Add(graph);
+            }
+            return graphs;
         }
     }
 }
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