檢查fieldsymbol

Question

我有類型fieldsymbol的strucutre =數據 FIELD-SYMBOLS: <fs_it_orignal> TYPE data.

然後我填動態填充字段符號<fs_it_orignal> = some_values.

此some_value可以是結構A B或C中的。

我一直在尋找，檢查的最佳方式，其中<fs_it_orignal>是結構AB或C.

Answer 1

我有一個不是很複雜的提案由於缺少需求的...

DATA: 
lro_struc_a   TYPE REF TO cl_abap_structdescr, 
lro_struc_b   TYPE REF TO cl_abap_structdescr, 
lro_struc_c   TYPE REF TO cl_abap_structdescr, 
lro_struc_o   TYPE REF TO cl_abap_structdescr, 
lt_data_comp_a   TYPE cl_abap_structdescr=>component_table, 
lt_data_comp_b   TYPE cl_abap_structdescr=>component_table, 
lt_data_comp_c   TYPE cl_abap_structdescr=>component_table, 
lt_data_comp_o   TYPE cl_abap_structdescr=>component_table. 

"analyze every structure 
lro_struc_a ?= cl_abap_typedescr=>describe_by_data(ls_struc_a). 
lro_struc_b ?= cl_abap_typedescr=>describe_by_data(ls_struc_b). 
lro_struc_c ?= cl_abap_typedescr=>describe_by_data(ls_struc_c). 
lro_struc_o ?= cl_abap_typedescr=>describe_by_data(<fs_it_orignal>). 

"get list of fields per structure 
lt_data_comp_a = lro_struc_a->get_components(). 
lt_data_comp_b = lro_struc_b->get_components(). 
lt_data_comp_c = lro_struc_c->get_components(). 
lt_data_comp_o = lro_struc_o->get_components(). 

*insert comparison depending on number of fields, names (respecting order) or types according to your requirement 

Answer 2

如果您

field-symbols: <fs_it_orignal> type any. 

"-- Code here to assign your FS to something 

case replace(val = cl_abap_typedescr=>describe_by_data(<fs_it_orignal>)->absolute_name 
       regex = '\\TYPE=' with = ''). 
    when 'Z_STRUCT_A'. 
    "-- Do what ever 
    when 'Z_STRUCT_B'. 
    "-- Do what ever 
    when 'Z_STRUCT_C'. 
    "-- Do what ever 
endcase.