我正在尝试使用功能模块REUSE_ALV_FIELDCATALOG_MERGE传递 ddic 中的字段标签以显示在 alv 报告的列标题中。
但是，那没有用。
如果我评论I_STRUCTURE_NAME = 'TY_YNAH_CUS_OBJ_REQ'行，它给我运行时错误状态
ABAP程序行比内部表宽。
但如果我取消注释，程序仍然无法运行
REPORT YALV_TEST.
tables sscrfields.
type-pools : slis.
"CREATE STRUCTURE -1
TYPES: BEGIN OF TY_YNAH_CUS_OBJ_REQ,
REQID TYPE YNAH_REQ_ID,
REQUESTOR TYPE YNAH_REQUESTOR,
BUSINESS_OWNER TYPE YNAH_BUS_OWN,
FUNCTIONAL_OWNER TYPE YNAH_FUNC_OWN,
REQNUM TYPE YNAH_SERVICE_REQ_NUM,
PROJECT_ID TYPE YNAH_PRO_ID,
SYSTEM_ID TYPE YNAH_SYS_ID,
FUNCTIONAL_AREA TYPE YNAH_FUNC_AREA,
REQUEST_DATE TYPE YNAH_REQ_DATE,
REQUEST_TIME TYPE YNAH_REQ_TIME,
END OF TY_YNAH_CUS_OBJ_REQ.
"defining internal table -2
DATA: IT_YNAH_CUS_OBJ_REQ type TABLE OF TY_YNAH_CUS_OBJ_REQ
* WA_YNAH_CUS_OBJ_REQ type TY_YNAH_CUS_OBJ_REQ.
DATA: it_fcat TYPE slis_t_fieldcat_alv ,
wa_fcat TYPE slis_fieldcat_alv,
gd_layout TYPE slis_layout_alv.
SELECTION-SCREEN BEGIN OF BLOCK menu WITH FRAME TITLE text-001.
SELECT-OPTIONS: s_proid FOR IT_YNAH_CUS_OBJ_REQ-PROJECT_ID.
PARAMETER p_sysid type TY_YNAH_CUS_OBJ_REQ-SYSTEM_ID.
SELECTION-SCREEN: BEGIN OF LINE,
pushbutton 33(8) BUT user-command search.
SELECTION-SCREEN END OF LINE.
SELECTION-SCREEN END OF BLOCK menu.
initialization.
BUT = 'SEARCH'. END-OF-SELECTION.
"execute search function when user click search button
at selection-screen. "after processing user input
case SSCRFIELDS.
when 'SEARCH'.
SSCRFIELDS-UCOMM = 'ONLI'.
endcase.
"fetch data using select-4 START-OF-SELECTION.
SELECT *
FROM YNAH_CUS_OBJ_REQ "Database
INTO CORRESPONDING FIELDS OF TABLE IT_YNAH_CUS_OBJ_REQ "Into internal table
WHERE
PROJECT_ID in s_proid and
SYSTEM_ID eq p_sysid.
CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
EXPORTING
I_PROGRAM_NAME = sy-repid
I_INTERNAL_TABNAME ='TY_YNAH_CUS_OBJ_REQ'
* I_STRUCTURE_NAME = 'TY_YNAH_CUS_OBJ_REQ'
* I_CLIENT_NEVER_DISPLAY = 'X'
I_INCLNAME = sy-repid
* I_BYPASSING_BUFFER = 'X'
* I_BUFFER_ACTIVE = CHANGING CT_FIELDCAT = it_fcat.
* EXCEPTIONS
* INCONSISTENT_INTERFACE = 1
* PROGRAM_ERROR = 2
* OTHERS = 3
* .
IF SY-SUBRC <> 0.
** Implement suitable error handling here
ENDIF.
- The
REUSE_*ALV*不支持功能模块。我建议切换到CL_SALV_*类。文档比较好，有更多的示例程序（DEMO_SALV_*）并且您会得到支持。
- 如果你想获得基于字典的字段描述，你需要一个字典结构（废话）。如果您使用 ABAP 级别组装结构类型
TYPE ... BEGIN OF ... END OF ...据我所知，各个字段的字典类型首先转换为ABAP类型，然后才组装成结构类型。无论如何，原始字段的字典引用丢失了。不要在代码中定义输出表的结构，而是使用字典结构。
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