user dialog overview. update statement tables customers. select single * from customers where id =...
TRANSCRIPT
User Dialog Overview
Update Statement
TABLES customers.SELECT SINGLE * FROM customers
WHERE id = 1.IF sy-subrc = 0. customers-name = ‘John’. UPDATE customers.ENDIF.
Database Server
Application Server
Dispatcher
RequestQueue
D D D D…
SAP Buffer
Program
…
User ContextArea
1
3
46
79
10
11
Report zpsm1.
Tables customers.
Select single * from
customers where id = 1.
Write: / customers-name.
5
Execute ABAP statement
Check Program in Program Buffer
Roll in
8
Load&Gen Program
SQL Request
Send List
Generate Screen(List)Send Request
Request List
2 Search for free WP
Store request to queue
Send request to WP
SAP GUI
SAP System : Dialog Processing
D010Scustomers
TaskHandler
DYNPRO Processor
ABAP Processor
Local Memory
Memory Space
DB Interface
List Buffer
Database Server
Dialog Work Process
User Context
Dialog WP : Report
Result Set Memory
Database Server
Application Server
Dispatcher
RequestQueue
D D D D…
SAP Buffer
Program
…
User ContextArea
1
3
46
79
10
11
5
Execute ABAP statement
Check Program in Program Buffer
Roll in
8
Load&Gen Program
SQL Request
Send List
Send Request
Request
2 Search for free WP
Store request to queue
Send request to WP
SAP GUI
SAP System : Dialog Processing
Generate Dialog Screen
ScreenPROGRAM sapmzex001.
INCLUDE ….
CALL SCREEN 100.
…
D010Scustomers
TaskHandler
DYNPRO Processor
ABAP Processor
Local Memory
Memory Space
DB Interface
Screen Buffer
Database Server
Dialog Work Process
User Context
Dialog WP : Dialog Program
Result Set Memory
Dialog Program : Transaction
Dialog Program ComponentsTransaction Code
Transaction Code
Screen : 100100(Screen Layout)
Screen : 200200(Screen Layout)
Flow Logic
Flow Logic
PBO
PAI
ABAP Module Pool
ABAP Module Pool
PBO
PAI
ABAP Module Pool
ABAP Module Pool
Dialog ProgramDialog Program Program Naming Convention : SAPM[Z/Y]…
Data Transfer (Local Memory)
Screen BufferABAP Memory Space
Screen Work Area ABAP Work Area
PBOPBO
PAIPAIcustomers-id
customers
id name city … 0000000
ok_code
ok_code
Local Memory
Element List
Flow Logic Process Before Output(PBO)
After it has processed all of the modules in the PBO processing block, the system copies the contents of the fields in the ABAP work area to their corresponding fields in the screen work area.
Process After Input(PAI) Before it processes the first module in the PAI
processing block, the system copies the contents of the fields in the screen work area to their corresponding fields in the ABAP work area.
OK Code Field in Screen
OK Code Field orCommand Field
(ok_code in Element List)
Defining Screen (4 Steps) Screen Attribute Screen Layout Flow Logic Element List
Element List(ok_code
field)
Flow Logic in Screen 100
PROCESS BEFORE OUTPUT.MODULE STATUS_0100.
PROCESS AFTER INPUT. MODULE USER_COMMAND_0100.
PBO in Screen 100
MODULE status_0100 OUTPUT.SET PF-STATUS ‘0100’.
SET TITLEBAR ‘0100’.ENDMODULE.
PAI in Screen 100MODULE user_command_0100 INPUT. CASE ok_code. WHEN ‘BACK’. LEAVE PROGRAM. WHEN space. SELECT SINGLE * FROM customers WHERE id
= customers-id. IF sy-subrc = 0. LEAVE TO SCREEN 200. ENDIF. ENDCASE.ENDMODULE.
How to Create Dialog Program
Transaction SE80 : Create Dialog Program (SAPMY/Z…)
Create Screen(4 steps) Screen Attribute (Description) Screen Layout (Graphic Screen Painter) Flow Logic(PBO,PAI) Define Variable ok_code in Element List
Define Data Objects in ABAP Work Area at TOP Include(TABLES, DATA,...)
Check and Activate Dialog Program Create Transaction Code (Y/Z…)
Example I
Maintain Customers Data
Screen : 100 Screen : 200
Example I
Create Dialog Program SAPMZEX<nn> for changing Customers table Screen 100
Field customers-id Screen 200
Field customers-id and customers-name
Example I
Screen 100
PROCESS BEFORE OUTPUT.
MODULE STATUS_0100.
PROCESS AFTER INPUT. MODULE USER_COMMAND_0100.
Example I
Screen 100
MODULE status_0100 OUTPUT. SET PF-STATUS ‘0100’. SET TITLEBAR ‘0100’. CLEAR ok_code.
ENDMODULE.
Example I
Screen 100MODULE user_command_0100 INPUT.
CASE ok_code. WHEN ‘BACK’. LEAVE PROGRAM. “leave to screen 0 WHEN space. SELECT SINGLE * FROM customers WHERE id = customers-id. LEAVE TO SCREEN 200. ENDCASE.
ENDMODULE.
Example I
Screen 200
PROCESS BEFORE OUTPUT.
MODULE STATUS_0200.
PROCESS AFTER INPUT. MODULE USER_COMMAND_0200.
Example I
Screen 200
MODULE status_0200 OUTPUT. SET PF-STATUS ‘0200’. SET TITLEBAR ‘0200’. CLEAR ok_code.
ENDMODULE.
Example I Screen 200
MODULE user_command_0200 INPUT. CASE ok_code. WHEN ‘BACK’. LEAVE TO SCREEN 100. “SET SCREEN 100. LEAVE
SCREEN. WHEN ‘SAVE’. UPDATE customers. MESSAGE s000(38) WITH ‘Update OK!’. LEAVE TO SCREEN 100. ENDCASE. ENDMODULE.
Example I
TOP IncludeTABLES customers.DATA ok_code TYPE sy-ucomm. Create Transaction CodeTransaction Code : ZEX<nn>
Exercise
Create Dialog Program : SAPMZCUST<nn>
Transaction Code : ZCUST<nn>
Exercise : Customers Maintenance
Screen : 100 Screen : 200
Checking User Input
Check Input Data Using Check Input Data Using FIELD FIELD StatementStatement
FIELD Statement
Screen 100 : Flow Logic (PAI)
PROCESS AFTER INPUT.
FIELD customers-id MODULE user_command_0100.
Example I
Screen 100 : PAIMODULE user_command_0100 INPUT.
... WHEN SPACE. SELECT SINGLE * FROM customers WHERE id = customers-id. IF sy-subrc <> 0. MESSAGE e000(38) WITH ‘Customers data not found’. ELSE. LEAVE TO SCREEN 200. ENDIF. ENDCASE.
ENDMODULE.