New: Included metadata in the resource view

coscine/issues#566

src/Project/Controllers/MetadataController.cs

@@ -140,6 +140,25 @@ namespace Coscine.Api.Project.Controllers
                 var resource = _resourceModel.GetById(Guid.Parse(resourceId));
                 if (_metadataModel.IsProjectMember(user, resource))
                 {
+                    json[graphName]["http://www.w3.org/1999/02/22-rdf-syntax-ns#type"] = new JArray
+                    {
+                        new JObject
+                        {
+                            ["value"] = resource.ApplicationProfile.Substring(0, resource.ApplicationProfile.Length-1),
+                            ["type"] = "uri"
+                        }
+                    };
+                    // throw bad request if empty node value is detected
+                    JToken root = json.First.First;
+                    foreach (var node in root)
+                    {
+                        string nodeValue = node.First.First["value"].ToString().ToLower();
+                        if (String.IsNullOrEmpty(nodeValue))
+                        {
+                            throw new ArgumentException("Empty values in application profile are not accepted.");
+                        }
+                    }
+
                     var graph = new Graph();
                     graph.LoadFromString(json.ToString(), new RdfJsonParser());