目的
使用BRF+的决策表代替SM30配置表，目前是一个demo，尚未进行生产验证
前提
- 创建一个BRF+应用程序，包含一个或者多个决策表
- 决策表仅包含简单决策，数据只能是单行，条件只能是等于（EQ/=），与SM30直观上感觉一致
示例代码
- 方法已封装，传入应用程序ID（如ZMDG_BRF_TEST）以及决策表ID即可
- 可传入与决策表结构一致的内表（参数ct_act_table），获取解析后的直观数据
zcl_common_fm=>read_brf_descision_table(
exporting
iv_appl_id = 'ZMDG_BP_IDTYPE_CHECK'
iv_table_name = 'DS_ID_TYPE'
importing
et_brf_table = data(lt_brf)
).
method read_brf_descision_table.
"----------------parameter list--------------------------
" iv_appl_id type fdt_name brf+应用程序名称
" iv_table_name type fdt_name brf+决策表名称
" et_brf_table type if_fdt_decision_table=>ts_table_data data of the decision table
" ct_act_table type index table optional 含结构的abap内表
"------------------------------------------------------
"-------------------------------------------------------
" goals of this method: replace DDIC cust table definiton
"-----------------------------------------------------
"get Brf application and Object GUID
select single *
from fdt_admn_0000
where name = @iv_appl_id
into @data(ls_appl_header).
select single *
from fdt_admn_0000
where name = @iv_table_name
into @data(ls_dt_header).
"read Brf+ data
data(lo_factory) = cl_fdt_factory=>if_fdt_factory~get_instance( ls_appl_header-application_id ).
data(lo_decision_table) = cast cl_fdt_decision_table(
lo_factory->get_expression( iv_id = ls_dt_header-id )
).
lo_decision_table->if_fdt_decision_table~get_table_data(
importing
ets_data = data(lt_data)
).
et_brf_table = corresponding #( lt_data ).
"mapping value to actual table
"the table structure mast be consistent with decision table
"the conditon must only contains equal
if ct_act_table is supplied.
data:lt_data_standard type standard table of if_fdt_decision_table=>s_table_data.
lt_data_standard = lt_data.
sort lt_data_standard by row_no col_no.
loop at lt_data_standard assigning field-symbol(<fs_data>).
at new row_no.
append initial line to lt_data assigning field-symbol(<fs_act>).
endat.
assign component <fs_data>-col_no of structure <fs_act> to field-symbol(<fs_act_field>).
check sy-subrc eq 0.
if <fs_data>-r_value is not initial.
assign <fs_data>-r_value->* to field-symbol(<fs_value>).
<fs_act_field> = <fs_value>.
else.
read table <fs_data>-ts_range assigning field-symbol(<fs_range>) index 1.
if sy-subrc eq 0.
if <fs_range>-low is not initial.
<fs_act_field> = <fs_range>-low.
else.
assign <fs_range>-r_low_value->* to <fs_value>.
<fs_act_field> = <fs_value>.
endif.
endif.
endif.
endloop.
endif.
endmethod.
读取结果
