How to use

cleanup

method

in

org.hibernate.impl.SessionImpl

public Connection close() throws HibernateException {
  log.trace( "closing session" );
  if ( factory.getStatistics().isStatisticsEnabled() ) 
    factory.getStatisticsImplementor().closeSession();
  try {
    try {
      if ( childSessionsByEntityMode != null ) {
        Iterator childSessions = childSessionsByEntityMode.values().iterator();
        while ( childSessions.hasNext() ) {
          final SessionImpl child = ( SessionImpl ) childSessions.next();
          child.close();
        }
      }
    }
    catch( Throwable t ) {
      // just ignore
    }
    if ( isRootSession ) {
      return jdbcContext.getConnectionManager().close();
    }
    else {
      return null;
    }
  }
  finally {
    closed = true;
    cleanup();
  }
}

cleanup();