ABAP-Dynamic-Internal table详解编程语言

 1     data: 
 2       lr_any_t  type ref to data, 
 3       lr_any_s  type ref to data. 
 4     data: 
 5       lr_dref   type ref to data, 
 6       lr_stru   type ref to cl_abap_structdescr, 
 7       lr_table  type ref to cl_abap_tabledescr, 
 8       lr_elem   type ref to cl_abap_elemdescr, 
 9       lt_para   type cl_abap_structdescr=>component_table, 
10       lt_comp   type cl_abap_structdescr=>component_table. 
11     field-symbols: 
12       <fs_tab>  type any, 
13       <ft_tab>  type standard table. 
14  
15     try. 
16  
17       lr_stru ?= cl_abap_tabledescr=>describe_by_data( it_any ). 
18  
19       loop at lr_stru->components[] into data(ls_comps). 
20         if ls_comps-type_kind = 'P' 
21         or ls_comps-type_kind = 'X'. 
22         else. 
23           ls_comps-length = ls_comps-length / 2. 
24         endif. 
25  
26         append initial line to lt_comp assigning field-symbol(<fs_comp>). 
27         <fs_comp>-name  =   ls_comps-name. 
28         <fs_comp>-type  ?=  cl_abap_elemdescr=>get_by_kind( 
29                             p_type_kind = ls_comps-type_kind 
30                             p_length = ls_comps-length 
31                             p_decimals = ls_comps-decimals ). 
32         unassign <fs_comp>. 
33       endloop. 
34  
35       if lt_comp[] is not initial. 
36         clear:lr_stru,lr_table. 
37         lr_stru   =   cl_abap_structdescr=>create( lt_comp ). 
38         lr_table  =   cl_abap_tabledescr=>create( lr_stru ). 
39  
40         create data lr_any_s type handle lr_stru. 
41         assign lr_any_s->* to <fs_tab>. 
42  
43         create data lr_any_t type handle lr_table. 
44         assign lr_any_t->* to <ft_tab>. 
45       endif. 
46  
47       move-corresponding it_any to <ft_tab>[]. 
48  
49       catch cx_root into data(lr_rt). 
50       data(lv_txt) = lr_rt->get_text( ). 
51       raise exception type zcx_root 
52         exporting 
53           textid = value #( 
54                      msgid = '00' 
55                      msgno = '001' 
56                      attr1 = lv_txt 
57                      ). 
58     endtry.