Update: Add Delete Column for resources

coscine/issues#1321

src/SQL2Linked/Implementations/ProjectStructuralData.cs

 using Coscine.Database.DataModel;
 using Coscine.Database.Models;
+using Coscine.Database.Util;
 using VDS.RDF;
 
 namespace SQL2Linked.Implementations
@@ -17,6 +18,17 @@ namespace SQL2Linked.Implementations
         private ProjectRoleModel ProjectRoleModel = new ProjectRoleModel();
         private ProjectResourceModel ProjectResourceModel = new ProjectResourceModel();
 
+        // Override to also receive deleted projects
+        public override IEnumerable<Project> GetAll()
+        {
+            return DatabaseConnection.ConnectToDatabase((db) =>
+            {
+                return
+                    (from tableEntry in Model.GetITableFromDatabase(db)
+                     select tableEntry).ToList();
+            });
+        }
+
         public override IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<Project> entries)
         {
             IEnumerable<Visibility> visibilities = VisibilityModel.GetAll();