b.santos/abap-cheat-sheets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update

Browse Source
This commit is contained in:
danrega
2023-12-29 13:18:14 +01:00
parent 88eaaa6f31
commit 8d1bc44331
2 changed files with 35 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
06_Dynamic_Programming.md
View File

@@ -738,7 +738,7 @@ DATA(oref) = NEW zcl_demo_abap_objects( ).
"Assigning instance attributes using an object reference variable
"All visible attributes of objects can be assigned.
oref->string = `ABAP`. "Assigning a value to the attribute
oref->string = `ABAP`. "Assigning a value to the attribute for demo purposes
ASSIGN oref->('STRING') TO <fs>.
"Assigning instance attributes using an interface reference variable
@@ -764,7 +764,7 @@ ASSIGN ('ZCL_DEMO_ABAP_OBJECTS')=>('PUBLIC_STRING') TO <fs>.
ASSIGN ('ZDEMO_ABAP_OBJECTS_INTERFACE')=>('CONST_INTF') TO <fs>.
"Further dynamic syntax options are possible, for example,
"specifying the memory area after ASSIGN with a writable expressions
"specifying the memory area after ASSIGN with a writable expression
"because the operand position after ASSIGN is a result position.
ASSIGN NEW zcl_demo_abap_objects( )->('PUBLIC_STRING') TO <fs>.
@@ -887,6 +887,35 @@ ASSIGN st TO <gen>.
"As in the examples above, specifying components dynamically is possible.
<gen>-('COL2') = `ABAP`.
DATA(gen_comp) = CONV string( <gen>-('COL2') ).
"Excursion
"In the following example, a structure is assigned to a field symbol that
"has a generic type. The components of the structure are accessed dynamically in
"a DO loop. The sy-index value is interpreted as the position of the component
"in the structure. Plus, using RTTI - as also shown further down - the component
"name is retrieved. Component names and the values are added to a string. As a
"prerequisite, all component values can be converted to type string.
DATA struc2string TYPE string.
FIELD-SYMBOLS <strco> TYPE data.
ASSIGN st TO <strco>.
IF sy-subrc = 0.
TRY.
DATA(comps) = CAST cl_abap_structdescr( cl_abap_typedescr=>describe_by_data( <strco> ) )->components.
DO.
TRY.
DATA(comp_name) = comps[ sy-index ]-name.
struc2string = struc2string &&
COND #( WHEN sy-index <> 1 THEN `, ` ) &&
comp_name && `: "` &&
<strco>-(sy-index) && `"`.
CATCH cx_sy_assign_illegal_component cx_sy_itab_line_not_found.
EXIT.
ENDTRY.
ENDDO.
CATCH cx_sy_move_cast_error.
ENDTRY.
ENDIF.
"struc2string: COL1: "123", COL2: "ABAP", COL3: "Z"
```
<p align="right"><a href="#top">⬆️ back to top</a></p>
@@ -984,10 +1013,10 @@ DATA(wa_te2) = itab[ ('COL2') = `bbb` ('COL3') = `yyy` ].
"In the following example, the component names are also specified dynamically.
DATA(wa_te3) = itab[ KEY ('SK') ('COL2') = `ccc` ].
"Specifying the COMPONENTS addition explicitly
DATA(wa_te4) = itab[ KEY ('PRIMARY_KEY') COMPONENTS ('col1') = 1 ].
DATA(wa_te4) = itab[ KEY ('PRIMARY_KEY') COMPONENTS ('COL1') = 1 ].
"Accessing components
"As shown abobe, chaininings with the (object) component selector are possible.
"As shown above, chaininings with the (object) component selector are possible.
"The examples use index access and write positions.
itab[ 1 ]-('COL2') = `jkl`.
itab_ref[ 1 ]->('COL2') = `mno`.
@@ -1028,7 +1057,7 @@ INSERT LINES OF VALUE itab_type( ( col1 = 4 col2 = `eee` col3 = `www` )
"USING KEY ('PRIMARY_KEY')
INTO itab INDEX 1.
"Excursion: Taking up the LOOP AT statements with the USING KEY addition
"Excursion: Using LOOP AT statements with the USING KEY addition
"and exploring the table index
"Declaring demo tables to hold the internal table entries
DATA it_seckey_idx TYPE TABLE OF demo_struct WITH EMPTY KEY.

1
08_EML_ABAP_for_RAP.md
View File

@@ -1368,6 +1368,7 @@ The following restrictions apply to operations and/or statements in the individu
Contract](https://help.sap.com/docs/ABAP_PLATFORM_NEW/fc4c71aa50014fd1b43721701471913d/3a402c5cf6a74bc1a1de080b2a7c6978.html):
Rules for the RAP BO provider and consumer implementation to ensure
consistency and reliability
- Find more information about the `CL_ABAP_TX` class mentioned above in the SAP Help Portal documentation: [Controlled SAP LUW](https://help.sap.com/docs/abap-cloud/abap-concepts/controlled-sap-luw).
<p align="right"><a href="#top">⬆️ back to top</a></p>