Update: Migrate project structured data to linked data (coscine/issues#2085)

src/SQL2Linked/Implementations/ProjectStructuralData.cs

 using Coscine.Database.DataModel;
 using Coscine.Database.Models;
 using VDS.RDF;
+using VDS.RDF.Query;
 
 namespace SQL2Linked.Implementations
 {
     public class ProjectStructuralData : StructuralData<Project, ProjectModel>
     {
+        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 foaf = new("http://xmlns.com/foaf/0.1/");
+        public readonly Uri vcard = new("http://www.w3.org/2006/vcard/ns#");
+        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 RoleModel RoleModel = new RoleModel();
+
         public override IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<Project> entries)
         {
-            // ToDo: Implement
-            throw new NotImplementedException();
+            IEnumerable<Visibility> visibilities = VisibilityModel.GetAll();
+            IEnumerable<Role> roles = RoleModel.GetAll();
+
+            var graphs = new List<IGraph>();
+            string resourceUrlPrefix = "https://hdl.handle.net/" + Prefix;
+
+            foreach (var entry in entries)
+            {
+                var projectGraphName = $"{resourceUrlPrefix}/{entry.Id}";
+
+                var graph = new Graph();
+                graph.BaseUri = new Uri(projectGraphName);
+
+                AssertToGraphUriNode(graph, projectGraphName, rdf + "type", dcat + "Catalog");
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {rdf}type {dcat}Catalog'. ");
+
+                AssertToGraphUriNode(graph, projectGraphName, rdf + "type", org + "OrganizationalCollaboration");
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {rdf}type {org}OrganizationalCollaboration'. ");
+
+                AssertToGraphUriNode(graph, projectGraphName, rdf + "type", vcard + "Group");
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {rdf}type {vcard}Group'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcterms + "title", entry.ProjectName);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcterms}title {entry.ProjectName}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcterms + "description", entry.Description);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcterms}description {entry.Description}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcat + "startDate", entry.StartDate.ToString());
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcat}startDate {entry.StartDate}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcat + "endDate", entry.EndDate.ToString());
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcat}endDate {entry.EndDate}'. ");
+
+                if (entry.Keywords.Any())
+                {
+                    var listKeywords = entry.Keywords.Split(';').ToList();
+                    foreach (var keyword in listKeywords)
+                    {
+                        AssertToGraphLiteralNode(graph, projectGraphName, dcterms + "subject", keyword);
+                        Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcterms}subject {keyword}'. ");
+                    }
+                }
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcterms + "alternative", entry.DisplayName);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcterms}alternative {entry.DisplayName}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, dcterms + "rightsHolder", entry.PrincipleInvestigators);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcterms}rightsHolder {entry.PrincipleInvestigators}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, "https://schema.org/funding", entry.GrantId);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} https://schema.org/funding {entry.GrantId}'. ");
+
+                foreach (var visibility in visibilities)
+                {
+                    if (entry.VisibilityId == visibility.Id && visibility.DisplayName.Contains("Public"))
+                    {
+                        AssertToGraphUriNode(graph, projectGraphName, cosc + "terms/project#visibility", cosc + $"terms/visibility#public");
+                        Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {cosc}terms/project#visibility {cosc}terms/visibility#public'. ");
+                        break;
+                    }
+                    else if (entry.VisibilityId == visibility.Id && visibility.DisplayName.Contains("Project Members"))
+                    {
+                        AssertToGraphUriNode(graph, projectGraphName, cosc + "terms/project#visibility", cosc + $"terms/visibility#projectMember");
+                        Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {cosc}terms/project#visibility {cosc}terms/visibility#projectMember'. ");
+                        break;
+                    }
+                }
+
+                AssertToGraphLiteralNode(graph, projectGraphName, cosc + "terms/project#deleted", entry.Deleted.ToString());
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {cosc}terms/project#deleted {entry.Deleted}'. ");
+
+                AssertToGraphLiteralNode(graph, projectGraphName, cosc + "terms/project#slug", entry.Slug);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {cosc}terms/project#slug {entry.Slug}'. ");
+
+                AssertToGraphUriNode(graph, projectGraphName, foaf + "homepage", projectGraphName);
+                Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {foaf}homepage {projectGraphName}'. ");
+
+
+
+
+            }
+            return graphs;
         }
     }
 }
\ No newline at end of file

src/SQL2Linked/StructuralData.cs

@@ -2,6 +2,7 @@
 using Coscine.Database.Models;
 using Coscine.Metadata;
 using VDS.RDF;
+using VDS.RDF.Query;
 
 namespace SQL2Linked
 {
@@ -10,12 +11,16 @@ namespace SQL2Linked
         public T Model { get; init; }
         public ConsulConfiguration Configuration { get; init; }
         public RdfStoreConnector RdfStoreConnector { get; init; }
+        public static string Prefix { get; set; }
+        public readonly SparqlRemoteEndpoint QueryEndpoint;
 
         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");
+            QueryEndpoint = new SparqlRemoteEndpoint(new Uri(string.Format("http://localhost:8890/sparql")));
         }
 
         public abstract IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<S> entries);
@@ -51,5 +56,36 @@ namespace SQL2Linked
                 Console.WriteLine();
             }
         }
+        public void AssertToGraphUriNode(IGraph graph, string graphSubject, string graphPredicate, string graphObject)
+        {
+            graph.Assert(
+                new Triple(
+                    graph.CreateUriNode(new Uri(graphSubject)),
+                    graph.CreateUriNode(new Uri(graphPredicate)),
+                    graph.CreateUriNode(new Uri(graphObject))
+                )
+            );
+        }
+        public void AssertToGraphLiteralNode(IGraph graph, string graphSubject, string graphPredicate, string graphObject, Uri? objectType = null)
+        {
+            graph.Assert(
+                new Triple(
+                    graph.CreateUriNode(new Uri(graphSubject)),
+                    graph.CreateUriNode(new Uri(graphPredicate)),
+                    graph.CreateLiteralNode(graphObject, objectType)
+                )
+            );
+        }
+
+        public void AssertToGraphBlankAndUriNode(IGraph graph, IBlankNode graphSubject, string graphPredicate, string graphObject)
+        {
+            graph.Assert(
+                new Triple(
+                    graphSubject,
+                    graph.CreateUriNode(new Uri(graphPredicate)),
+                    graph.CreateUriNode(new Uri(graphObject))
+                )
+            );
+        }
     }
 }