String baseName = FilenameUtils.getBaseName(fileName);
Query query = manager.createQuery("SELECT cont FROM NicoContent AS cont " + "WHERE ?1 = cont.fileName").
setParameter(1, baseName);
+ @SuppressWarnings("unchecked")
List<NicoContent> results = query.getResultList();
if (results.size() > 1) {
Logger.getLogger(getClass().getName()).log(Level.WARNING, "同一ファイル名のファイルが複数ありました");