fix import

src/app/mapping/class/dataset.ts

@@ -11,7 +11,7 @@ export class Dataset {
 }
 
 export class DatasetPath {
-    public dcatProperty: Dataset;
+    public dcatProperty: Dataset | string;
     public path: string
 
     constructor(dcatProperty: Dataset, path: string) {

src/app/mapping/mapping.component.ts

@@ -339,10 +339,14 @@ export class MappingComponent implements OnInit {
     let datasetPath: DatasetPath[] = [];
     reader.onloadend = () => {
       datasetPath = <DatasetPath[]>JSON.parse(reader.result as string);
-      datasetPath.forEach(e => {
-        this.selectedPaths[datasetPath.indexOf(e)] = e.path;
-        this.dcatVocabulary[datasetPath.indexOf(e)] = e.dcatProperty;
-      });
+      for (let i = 0; i < datasetPath.length; i++) {
+        this.selectedPaths[i] = datasetPath[i].path;
+        if (typeof datasetPath[i].dcatProperty === 'string') {
+          this.dcatVocabulary[i] = new Dataset('',<string> datasetPath[i].dcatProperty, '');
+        } else {
+          this.dcatVocabulary[i] = <Dataset> datasetPath[i].dcatProperty;
+        }
+      }
     }
     reader.readAsText(jsonFile);
   }