S4HANA For ABAP(1):S4 ABAP升级改变

S4HANAForABAP

1New In SAP NetWeaver 7.0 to SAP NetWeaver 7.51

1.1SAP ABAP发展历程

1.2Understanding Compiler Warnings and Suppressing Pragmas

编译时的一些警告信息，可以通过Pragmas使警告消失；

示例代码:

"test1
"Understanding Compiler Warnings and  Suppressing them with Pragmas
FORM f_test1.
  DATA:lv_val TYPE C LENGTH 10 "#EC NEEDED
              VALUE 'test' . "#EC NOTEXT
  "Pragmas,what use?
  DATA:lv_val1 TYPE C LENGTH 10  ##NEEDED
       VALUE 'test'  ##NO_TEXT.

  DATA:lt_spfli TYPE TABLE OF spfli
        WITH NON-UNIQUE SORTED KEY k_sort COMPONENTS carrid connid.
  "DATA:ls_spfli LIKE LINE OF lt_spfli.
  SELECT * INTO TABLE lt_spfli FROM spfli.
  "没有pragmas,会有warning
  LOOP AT lt_spfli INTO DATA(ls_spfli) WHERE carrid = 'AA' AND connid = '0017' ##PRIMKEY[K_SORT].
    WRITE:/ ls_spfli-carrid,ls_spfli-connid,ls_spfli-cityfrom.
  ENDLOOP.
  "使用key
  LOOP AT lt_spfli INTO ls_spfli USING KEY k_sort WHERE carrid = 'AA' AND connid = '0017'.
    WRITE:/ ls_spfli-carrid,ls_spfli-connid,ls_spfli-cityfrom.
  ENDLOOP.
ENDFORM.

1.3Using the Source-Code-Based Class Builder

默认Class Builder是表格格式，通过Form-Based可以切换为Source-Code模式；

1.4Enhancing Productivity through Code Completion

代码自动补全，使用Code Completion提高代码编辑效率；

只支持微软拼音输入，需要取消Ctrl+Space热键占用；

帮助：https://blog.csdn.net/qq_30797051/article/details/123862919

1.5Providing a Type-Ahead Search Help

通过输入参数，不需要F4,自动触发Search Help;

示例代码：

"data element:zt_custom
"search help:zt_scustom
"advanced Options:AutoSuggest in input fields
SELECTION-SCREEN BEGIN OF BLOCK blk3 .
  PARAMETERS:scustom TYPE zt_custom.
SELECTION-SCREEN END OF BLOCK blk3.