pomm-project / ModelManager

     * @throws  ModelLayerException if not valid isolation level

     * @return  ModelLayer $this

     */

    protected function setTransactionIsolationLevel($isolation_level)

    {

        $valid_isolation_levels =

            [

                Connection::ISOLATION_READ_COMMITTED,

                Connection::ISOLATION_REPEATABLE_READ,

                Connection::ISOLATION_SERIALIZABLE

            ];

        if (!in_array(

            $isolation_level,

            $valid_isolation_levels

        )) {

            throw new ModelLayerException(

                sprintf(

                    "'%s' is not a valid transaction isolation level. Valid isolation levels are {%s} see Connection class constants.",

                    $isolation_level,

                    join(', ', $valid_isolation_levels)

                )

            );

        }

        return $this->sendParameter(

            "set transaction isolation level %s",

            $isolation_level

        );

    }

    /**

     * setTransactionAccessMode

     * @throws  ModelLayerException if not valid access mode

     * @return  ModelLayer $this

     */

    protected function setTransactionAccessMode($access_mode)

    {

        $valid_access_modes =

            [

                Connection::ACCESS_MODE_READ_ONLY,

                Connection::ACCESS_MODE_READ_WRITE

            ];

        if (!in_array(

            $access_mode,

            $valid_access_modes

        )) {

            throw new ModelLayerException(

                sprintf(

                    "'%s' is not a valid transaction access mode. Valid access modes are {%s}, see Connection class constants.",

                    $access_mode,

                    join(', ', $valid_access_modes)

                )

            );

        }

        return $this->sendParameter(

            "set transaction %s",

            $access_mode

        );

    }

    /**

     * setSavePoint