关于abap:从程序调用-AMDP-方法和从另一个-AMDP-方法调用-AMDP-方法

CLASS zcl_flight_calc DEFINITION PUBLIC FINAL CREATE PUBLIC.  PUBLIC SECTION.* Marker interface with SAP HANA DB as database type    INTERFACES: if_amdp_marker_hdb.    METHODS: update_flight IMPORTING VALUE(iv_carrid) TYPE spfli-carrid                                     VALUE(iv_occ)    TYPE sflight-seatsocc                                     VALUE(iv_max)    TYPE sflight-seatsmax.    METHODS: get_flight_withdetail      IMPORTING VALUE(iv_carrid) TYPE sflight-carrid      EXPORTING VALUE(et_flight) TYPE flighttab.    METHODS: get_flight_detail      IMPORTING VALUE(iv_carrid) TYPE sflight-carrid      EXPORTING VALUE(et_flight) TYPE flighttab.ENDCLASS.CLASS zcl_flight_calc IMPLEMENTATION.  METHOD update_flight BY DATABASE PROCEDURE FOR HDB LANGUAGE SQLSCRIPT USING                                    sflight.    update sflight set seatsocc = iv_occ,                       seatsmax = iv_max    where mandt = SESSION_context ( 'CLIENT' )      and carrid = iv_carrid;  ENDMETHOD.  METHOD get_flight_withdetail BY DATABASE PROCEDURE FOR HDB LANGUAGE                                     SQLSCRIPT USING zcl_flight_calc=>get_flight_detail.    CALL "ZCL_FLIGHT_CALC=>GET_FLIGHT_DETAIL"( iv_carrid => iv_carrid,                                               et_flight => et_flight);  ENDMETHOD.  METHOD get_flight_detail                               BY DATABASE PROCEDURE FOR HDB                               LANGUAGE SQLSCRIPT                               OPTIONS READ-ONLY                               USING sflight.* Implementation of the procedure in a DB-specific language    et_flight = SELECT * FROM sflight WHERE mandt = SESSION_CONtext ('CLIENT')                                          and carrid = iv_carrid;  ENDMETHOD.ENDCLASS.