@Override
 public void clearMetadata(
     Context context, T dso, String schema, String element, String qualifier, String lang)
     throws SQLException {
   // We will build a list of values NOT matching the values to clear
   Iterator<MetadataValue> metadata = dso.getMetadata().iterator();
   while (metadata.hasNext()) {
     MetadataValue metadataValue = metadata.next();
     if (match(schema, element, qualifier, lang, metadataValue)) {
       metadataValue.setDSpaceObject(null);
       metadata.remove();
       //                metadataValueService.delete(context, metadataValue);
     }
   }
   dso.setMetadataModified();
 }