Merge pull request IQSS#7333 from IQSS/7310-datasetpage-ldjson-error

Fix for the json LD export error in the dataset page

src/main/java/edu/harvard/iq/dataverse/DataFileServiceBean.java

@@ -578,7 +578,7 @@ public void findFileMetadataOptimizedExperimental(Dataset owner, DatasetVersion
 
         int i = 0; 
 
-        List<Object[]> dataTableResults = em.createNativeQuery("SELECT t0.ID, t0.DATAFILE_ID, t0.UNF, t0.CASEQUANTITY, t0.VARQUANTITY, t0.ORIGINALFILEFORMAT, t0.ORIGINALFILESIZE FROM dataTable t0, dataFile t1, dvObject t2 WHERE ((t0.DATAFILE_ID = t1.ID) AND (t1.ID = t2.ID) AND (t2.OWNER_ID = " + owner.getId() + ")) ORDER BY t0.ID").getResultList();
+        List<Object[]> dataTableResults = em.createNativeQuery("SELECT t0.ID, t0.DATAFILE_ID, t0.UNF, t0.CASEQUANTITY, t0.VARQUANTITY, t0.ORIGINALFILEFORMAT, t0.ORIGINALFILESIZE, t0.ORIGINALFILENAME FROM dataTable t0, dataFile t1, dvObject t2 WHERE ((t0.DATAFILE_ID = t1.ID) AND (t1.ID = t2.ID) AND (t2.OWNER_ID = " + owner.getId() + ")) ORDER BY t0.ID").getResultList();
 
         for (Object[] result : dataTableResults) {
             DataTable dataTable = new DataTable(); 
@@ -596,6 +596,8 @@ public void findFileMetadataOptimizedExperimental(Dataset owner, DatasetVersion
 
             dataTable.setOriginalFileSize((Long)result[6]);
 
+            dataTable.setOriginalFileName((String)result[7]);
+
             dataTables.add(dataTable);
             datatableMap.put(fileId, i++);
 
@@ -856,8 +858,10 @@ private List<FileMetadata> retrieveFileMetadataForVersion(Dataset dataset, Datas
 
             fileMetadata.setDatasetVersion(version);
 
-            //fileMetadata.setDataFile(dataset.getFiles().get(file_list_id));
+            // Link the FileMetadata object to the DataFile:
             fileMetadata.setDataFile(dataFiles.get(file_list_id));
+            // ... and the DataFile back to the FileMetadata:
+            fileMetadata.getDataFile().getFileMetadatas().add(fileMetadata);
 
             String description = (String) result[2];