code: private void writeCustomInfo(Event event) {
          // insert customInfo (key/value) into DB
          for (Map.Entry<String, String> customInfo : event.getCustomInfo().entrySet()) {
              long cust_id = dbDialect.getIncrementer().nextLongValue();
              getJdbcTemplate()
                  .update("insert into EVENTS_CUSTOMINFO (ID, EVENT_ID, CUST_KEY, CUST_VALUE)"
                          + " values (?,?,?,?)",
                              cust_id, event.getPersistedId(), customInfo.getKey(), customInfo.getValue());
          }
      }
docs: write CustomInfo list into table.
  
  @param event the event