* otherwise the connection will be disconnected once the usage drops to zero.
     * 
     * @param np
     *            whether to use an exclusive connection
     */
    void setNonPooled ( boolean np ) {
        this.nonPooled = np;
    }


    /**
     * @return the currently connected tid
     */
    @SuppressWarnings ( "resource" )
    public long getTreeId () {