关于abap:ABAP简单的adbc测试代码

*&---------------------------------------------------------------------*
*& Report ztest_adbc_demo
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
REPORT ztest_adbc_demo.
TYPES:
*”设定内表和工作区构造体的类型
  BEGIN OF ty_airline,
    airline_id       TYPE scarr-carrid,
    airline_name     TYPE scarr-carrname,
    airline_currency TYPE scarr-currcode,
    url              TYPE scarr-url,
    url2             TYPE string,
  END OF ty_airline.
*”设定承载SQL语句的变量，返回后果变量、条件变量
DATA:
  lv_statement  TYPE string,
  lt_airline    TYPE TABLE OF ty_airline,
  lr_result     TYPE REF TO data,
  lv_currency   TYPE scarr-currcode,
**”设定ADBC相干类的连贯对象、SQL对象、后果对象、异样对象的变量
  lo_conn       TYPE REF TO cl_sql_connection,
  lo_statement  TYPE REF TO cl_sql_statement,
  lo_result_set TYPE REF TO cl_sql_result_set,
  lx_sql        TYPE REF TO cx_sql_exception.
*”关联内表到后果对象变量中
GET REFERENCE OF lt_airline INTO lr_result.
*”设定条件变量的值
lv_currency = 'EUR'.
*”拼接HANA Native SQL,该语法是HANA的SQL Script所反对的语法
*”也能够调用SQL Script的函数如SUBSTRING
lv_statement = | SELECT CARRID, CARRNAME, CURRCODE, URL, |
&& | SUBSTRING (URL,8,LENGTH(URL)) AS URL2 |
&& | FROM scarr WHERE currcode = '{ lv_currency }' and |
&& | CARRID <> 'CA' | .
TRY.
**n调用SQL-Connection办法，连贯到数据库
    lo_conn = cl_sql_connection=>get_connection( ).
**n調用SQL-Statement办法，创立SQL对毎
    lo_statement = lo_conn->create_statement( ).
*"調用SQL-query方还，执行SQL语句
    lo_result_set = lo_statement->execute_query( lv_statement ).
    "调用SQL-set_param_table办法，指定用哪个内表来记录返回后果
    lo_result_set->set_param_table( lr_result ).
*往取数据集的下一组薮龍到内表
    lo_result_set->next_package( ).
*”褥到后果后，敞开数据棄
    lo_result_set->close( ).
*”打印内表
    cl_demo_output=>display_data( lt_airline ).
*”错误处理，如SQL有误，则在此处报出log,而不会导致系统解体(short dump )
  CATCH cx_sql_exception INTO lx_sql.
    WRITE: lx_sql->get_text( ).
ENDTRY.