protected IDBWriter getDBWriter(List<TableInfo> tableInfos) throws IOException, SQLException {
        Connection conn = dbUtil.getConnection();
        return new DBWriter(conn, tableInfos, dbUtil, mimeBuffer);
    }
@return the main tables, not including the ref tables
tika-eval/tika-eval-app/src/main/java/org/apache/tika/eval/app/batch/EvalConsumerBuilder.java