fix(Fedora3Storage): do not delete files in Fedora if filenames are identical...

fix(Fedora3Storage): do not delete files in Fedora if filenames are identical but file size is wrong in Fedora

AoU-Admin/src/main/java/ch/unige/aou/service/storage/Fedora3Storage.java

@@ -588,6 +588,21 @@ public class Fedora3Storage extends StorageService {
               if (nodeFilename.equals(oldFileName) && nodeSize.equals(oldSize)) {
                 deleteDs = false;
                 break;
+              } else {
+                // Some data are wrong in ADMIN datastream -> we do another check to prevent deleting files while it should not.
+                // Instead of getting the size in ADMIN datastream, we get the real size of the file in the datastream itself
+                String currentDsSize = this.getDatastreamSize(publication, oldAttachmentId);
+                if (nodeFilename.equals(oldFileName) && nodeSize.equals(currentDsSize)) {
+                  // file names match. Size in the new ADMIN
+                  deleteDs = false;
+                  break;
+                } else if (nodeSize.equals(currentDsSize)) {
+                  // Size is the same, but filename is different. It is maybe another file with the same size.
+                  // We delete the file
+                } else {
+                  // filename and size are different
+                  // We delete the file
+                }
               }
             } else {
               // Case of old publication with incomplete ADMIN datastream --> we delete a datastream only if no one with the same size exists anymore