Merge branch 'Issue/2222-resourceDateCreated' into 'dev'

New: "Date Created" translation added to the SQL2Linked

See merge request !16

src/SQL2Linked/Implementations/ProjectStructuralData.cs

@@ -63,10 +63,10 @@ namespace SQL2Linked.Implementations
                 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());
+                AssertToGraphLiteralNode(graph, projectGraphName, dcat + "startDate", entry.StartDate.ToString(), new Uri("http://www.w3.org/2001/XMLSchema#dateTime"));
                 Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcat}startDate {entry.StartDate}'. ");
 
-                AssertToGraphLiteralNode(graph, projectGraphName, dcat + "endDate", entry.EndDate.ToString());
+                AssertToGraphLiteralNode(graph, projectGraphName, dcat + "endDate", entry.EndDate.ToString(), new Uri("http://www.w3.org/2001/XMLSchema#dateTime"));
                 Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {dcat}endDate {entry.EndDate}'. ");
 
                 if (!string.IsNullOrWhiteSpace(entry.Keywords))

src/SQL2Linked/Implementations/ResourceStructuralData.cs

@@ -119,8 +119,11 @@ namespace SQL2Linked.Implementations
                 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}'. ");
 
+                if (entry.Creator is not null)
+                {
                     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().ToLower(), 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}'. ");
@@ -174,6 +177,12 @@ namespace SQL2Linked.Implementations
                     }
                 }
 
+                if (entry.DateCreated is not null && entry.DateCreated.HasValue)
+                {
+                    AssertToGraphLiteralNode(graph, resourceGraphName, dcterms + "created", entry.DateCreated.Value.ToString(), new Uri("http://www.w3.org/2001/XMLSchema#dateTime"));
+                    Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{resourceGraphName} {dcterms}created {entry.DateCreated}'. ");
+                }
+
                 graphs.Add(graph);
             }