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ABAP Event-driven Programming &Selection Screen
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Transcript of ABAP Event-driven Programming &Selection Screen
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ABAP Chapter 4
Event-driven Programming Selection Screen
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Event-driven Programming
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Application Driven Programming
REPORT ztest.DATA: today TYPE D.today = ‘19991231’.today = today + 1.WRITE: / today.
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Event-Driven Programming
Data tmp type i.- -Start of Selection.
Write: / ‘This is ’. Write: / ‘Basic List’.
-At line selection. Write: / ‘This is ’. Write: ‘Detail List’.
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Events
START-OF-SELECTION. END-OF-SELECTION. TOP-OF-PAGE. TOP-OF-PAGE DURING LINE-
SELECTION. END-OF-PAGE. AT LINE-SELECTION. AT USER-COMMAND. INITIALIZATION. AT SELECTION-SCREEN.
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AT LINE-SELECTION Event(Drill-down Report)
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AT LINE-SELECTION
- -Start of selection. Write : ‘Basic List’.
-At Line selection. Write : ‘Detail List’.
Basic list
DoubleClick
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Navigating Between Lists
Basic list
Detail list 20Exit
Detail list 1
Detail list 2
ABAP Editor
Back
Cancel
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Detail List and SY-LSIND
Start-of-selection. write: ‘Basic List’.
-AT Line selection. CASE -sy lsind. WHEN 1. write: ‘Detail List #1’. 2 22
write: ‘Detail List #2’. .
Detail list 2SY-LSIND = 2
Detail list 1SY-LSIND = 1
Basic list
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At Line Selection
Tables customers.- -Start of Selection.
Select * from customers. - write : / customers name . Endselect.
-At line selection. Write: ‘You Choose :’ , custome
-rs name.
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At Line Selection(Hide Statement)
Tables customers.- -Start of Selection.
Select * from customers. -write : / customers name.
-Hide customers name. Endselect.
-At line selection. Write: ‘You Choose :’ , -customers name.
HIDE area of list level 1
line Field name Value1 customers-name John 2 customers-name Peter
3 customers-name David
JohnPeterDavid
List Buffer
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Hide Area in ListHide Area in ListDialog WP
TaskHandler
DYNPRO Processor
ABAP Processor
Database
Local Memory
Memory Space
DB Interface
List buffer
Result Set Memory
Database Server
Application Server
3 | David | ....
Customers Structure
JohnPeterDavid
Basic List
HIDE area of list level 1line Field name Value1 customers-name John 2 customers-name Peter3 customers-name David
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At Line Selection(Hide Statement)
HIDE area of list level 1
line Field name Value1 customers-name John 2 customers-name Peter
3 customers-name David
JohnPeterPeterDavid
You choose : Peter
Basic List Detail List
SY-LILLI = 2
3 | Peter | ....
Customers Structure
1
2
3
4
At Line-selection
5
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HIDE area of list level 1line Field name Value1 customers-id 00000001 1 customers-name John
2 customers-id 000000022 customers-name Peter
…
At Line Selection(Hide Statement)
Tables customers.- -Start of Selection.
Select * from customers. write : / customers-id, -customers name. Hide: customers-id, -customers name. Endselect.
-At line selection. Write: ‘You Choose :’ , customers-id, -customers name.
00000001 John00000002 Peter00000003 David
List Buffer
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At Line Selection(Hide Statement)
HIDE area of list level 1
line Field name Value… … …2 customers-id 00000002 2 customers-name Peter
3 customers-id 00000003…
00000001 John00000002 Peter00000002 Peter00000003 David
You choose : 00000002 Peter
Basic List Detail List
SY-LILLI = 2
2 | Peter | ....
Customers Structure
1
2
3
4
At Line-selection
5
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At Line Selection
Tables: spfli,sflight.Start-of-selection. Select * from spfli. write : / spfli-carrid, spfli-
connid, spfli-cityto. Hide : spfli-carrid, spfli-
connid. Endselect.At Line-selection. select * from sflight where carrid
= spfli-carrid and connid =
spfli-connid. write: / spfli-carrid, spfli-
connid,sflight-fldate. endselect.
Basic List (SPFLI)
Detail List (SFLIGHT)
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Exercise
zcustomers
zsales
Basic List
Detail Listzcustomers-id
zcustomers-namezsales-cust_id
zsales-prod_id
zsales-qty
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Hide Statement (Report Heading)
Tables customers.Top-of-page. write: / ‘Customers Name’. uline.
- -Start of Selection. Select * from customers. -write : / customers name.
-Hide customers name. Endselect.
-At line selection. -Write: ‘You Choose :’ , customers name.
HIDE area of list level 1
line Field name Value3 customers-name John 4 customers-name Peter
5 customers-name David
Customers Name-----------------------------JohnPeterDavid
List Buffer
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At Line Selection(Hide Statement)
HIDE area of list level 1
line Field name Value3 customers-name John 4 customers-name Peter
5 customers-name David
Customers Name-----------------------------JohnPeterPeterDavid
You choose : Peter
Basic List Detail List
SY-LILLI = 4
3 | Peter | ....
Customers Structure
1
2
3
4
At Line-selection
5
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Invalid Line Selection …TOP-OF-PAGE. …Hide: spfli-carrid, spfli-connid.…Endselect.Clear: spfli-carrid,spfli-connid.At Line-selection. Select * From sflight Where carrid = spfli-carrid
and connid = spfli-connid. Write: / spfli-carrid, spfli-
connid ,sflight-fldate. Endselect. Clear: spfli-carrid,spfli-connid.
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Page Heading
- -Start of selection. Write: ‘Basic List’.
-At Line selection. Write: ‘Detail List’.
- -Top of page. -Write: ‘Header Basic List’.
- - -Top of page During Line selection. -Write: ‘Header Detail List’.
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Detail List Page Heading...top-of-page during line-selection. case sy-lsind. when 1. write: / ‘Detail List Header #1’. when 2. write: / ‘Detail List Header #2’. endcase...........
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Column Selection...data: fieldname(30)....start-of-selection. select * from spfli. write: / spfli-carrid,15 spfli-connid, 25 spfli-cityto. hide: spfli-carrid,spfli-connid. endselect.at line-selection. case sy-lsind. when 1. get cursor field fieldname. case fieldname. when 'SPFLI-CARRID'. select single * from scarr where carrid = spfli-carrid. if sy-subrc = 0. write: / spfli-carrid,scarr-carrname. endif. when 'SPFLI-CONNID'. select * from sflight where carrid = spfli-carrid and connid = spfli-connid. ...
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Column Selection : Value...data: fieldname(30),fieldvalue(30)....start-of-selection. select * from spfli. write: / spfli-carrid,15 spfli-connid, 25 spfli-cityto. hide: spfli-carrid,spfli-connid. endselect.at line-selection.case sy-lsind. when 1. get cursor field fieldname value fieldvalue. case fieldname. when 'SPFLI-CARRID'. select single * from scarr where carrid = spfli-carrid. if sy-subrc = 0. write: / spfli-carrid,scarr-carrname. endif. when 'SPFLI-CONNID'. ...
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Creating List in Modal Dialog Box
...at line-selection. window starting at 10 10 ending at 65 20. select * from sflight where carrid = spfli-carrid and connid = spfli-connid. write: / sflight-carrid,sflight-connid,sflight-
fldate. endselect. ...
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ExerciseBasic List
Detail List
zsales
zsalerepszproducts
zsales-cust_id
zsales-prod_id
zsales-qty
zsales-sale_id
zsalereps-sale_id
zsalereps-namezproducts-on_hand
zproducts-p_id
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Drill-Down 2 Levels Example
12
Detail list level 1 (ZSALES)
Detail list level 2 (ZPRODUCTS)
Basic list (ZCUSTOMERS)
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Program ExampleSTART-OF-SELECTION. SELECT * FROM zcustomers. WRITE: / zcustomers-id COLOR 4 HOTSPOT, 15 zcustomers-name. HIDE: zcustomers-id,zcustomers-name. ENDSELECT. CLEAR zcustomers-id.
AT LINE-SELECTION. CASE sy-lsind. WHEN 1. GET CURSOR FIELD fieldname. IF fieldname = 'ZCUSTOMERS-ID'. SELECT * FROM zsales WHERE cust_id = zcustomers-id. IF sy-dbcnt = 1. WRITE: / zcustomers-id,15 zcustomers-name,30 zsales-prod_id HOTSPOT, 45 zsales-qty. HIDE: zsales-prod_id. ELSE. WRITE: /30 zsales-prod_id HOTSPOT, 45 zsales-qty. HIDE: zsales-prod_id. ENDIF. ENDSELECT. CLEAR: zcustomers-id,zsales-prod_id. ENDIF. WHEN 2. GET CURSOR FIELD fieldname. IF fieldname = 'ZSALES-PROD_ID'. SELECT SINGLE * FROM zproducts WHERE p_id = zsales-prod_id. IF sy-subrc = 0. WRITE: / zproducts-p_id,15 zproducts-prod_name,38 zproducts-on_hand. ENDIF. CLEAR zsales-prod_id. ENDIF. ENDCASE.
Hide Level 1
Hide Level 2
Drill Down Level 1
Drill Down Level 2
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ExerciseBasic List
Drill-down Level 1
Drill-down Level 2
Drill-down Level 3
SCARR
SPFLI
SFLIGHT
SBOOK
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GUI Interface (User Interface)
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GUI Interface - SET PF STATUS …. => GUI
Status SET TITLEBAR …. =>
GUI Title
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AT USER-COMMAND Event
SET PF-STATUS ‘TEST’. ...AT USER-COMMAND. CASE -sy ucomm. WHEN ‘CODE1’. . WHEN ‘CODE2’. . ENDCASE.
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Standard Toolbar : System Function System function do not trigger event AT USER-
COMMAND %EX = Exit %PC = Save to file %SC = Find %SC+ = Find next %ST = Save in report tree BACK = Back RW = Cancel PRI = Print P- = Scroll to previous page P-- = Scroll to first page P+ = Scroll to next page P++ = Scroll to last page
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Alternative with AT USER-COMMAND
REPORT ZRSDEM002. . START-OF-SELECTION - SET PF STATUS ‘BASE’. . . -AT USER COMMAND. -CASE SY UCOMM. WHEN ‘CARR’. SET PF_STATUS SPACE. “Set to standard GUI
interface . WHEN ‘FLIG’. - SET PF STATUS ‘FLIG’. WRITE … . .
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GUI Status Excluding Function Code
REPORT ztest. ... - SET PF STATUS ‘0100’. ... -AT USER COMMAND. -CASE SY UCOMM. WHEN ‘LIST’. - SET PF STATUS ‘0100’ excluding ‘LIST’. . WHEN ‘DISP’. - SET PF STATUS ‘0100’ excluding ‘DISP’. WRITE … . ....
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GUI Status Excluding Function Code
REPORT ztest.DATA exctab(10) occurs 0 with header line. ....START-OF-SELECTION. - SET PF STATUS ‘0100’. ... exctab = ‘LIST’. APPEND exctab. exctab = ‘TEST’. APPEND exctab. ...
-AT USER COMMAND. -CASE SY UCOMM. WHEN ‘LIST’. - SET PF STATUS ‘0100’ excluding exctab.
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GUI TITLE ... SET TITLEBAR ‘0100’.
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ABAP Practice
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Selection Screen
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Selection Screen
PARAMETERS Statement SELECT-OPTIONS
Statement
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parameters
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Parameters
PARAMETERS 1: tmp (10) TYPE C, 210tmp ( ) TYPE C lower case, 3tmp LIKE sy-datum default
sy-datum, 4tmp TYPE D 2222222 199912‘31’,
5tmp TYPE i, tmp6(5) TYPE N.
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Parameters Example
Tables customers.Parameters pid like customers-id.START-OF-SELECTION. select single * from customers where
id = pid. if sy-subrc = 0. write: / customers-name. else. write: / ‘No data found’. endif.
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Selection-Text By default , the System displays the
name of the selection as text on the Selection Screen
You Should use the Text element/Selection texts function to store a text line for each Selection Criterion.
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Check box
Parame ters tmp as checkbo x default ‘X’.
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Radio Button
Parameters: test1 Radiobutton group grp1,
test2 Radiobutton group grp1.
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Required field with Parameters
Parameters tmp like sy-datum obligatory.
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ABAP Exercise
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select-options
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Complex Selection (Select-options)
Tables spfli.- Select options carrid for spfli-car
rid.START-OF-SELECTION.
Select * From spfli Where carrid in carrid. . . .Endselect.
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Select-Options
“ต้�องการให้�แสดงข้�อมู�ล customers ข้องล�กค้�าที่��มู�ชื่��อ(ค้อล�มูน์� name ) ข้��น์ต้�น์ด�วยต้�ว ‘M’ และล�กค้�าที่��ชื่��อ ‘Smith’ และล�กค้�าที่��ชื่��ออย�"ระห้ว"าง ‘A’ ก�บ ‘John’ โดยใชื่�ค้%าส��ง SELECT”
*Select from customers 22( ‘ % ’ ) 22( = ‘’) 2( ‘ ’ ‘ John’).
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Select-Options
Tables customers.Select-options sname for customers-name.START-OF-SELECTION.Select * from customers Where name in sname.
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Internal Structure of Select-options
sname
Sign Option Low High
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Internal Structure of Select-options Field Value . Sign I = Include E = Exclude Option BT = Between CP = Contains Pattern EQ = Equal GT = Greater Than LT = Less Than GE = Grater Than or Equal LE = Less Than or Equal NE = Not Equal NB = Not Between
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Internal Structure of Select-options
snameSign Option Low High
I CP M* I EQ Smith I BT A John
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SELECT-OPTIONS
Sign Option Low High
I CP M* I EQ Smith I BT A John
sname
Select * from customers where name in sname.
*Select from customers 22( ‘ % ’ ) 22( = ‘ ’ ) 2( ‘ ’ ‘ John’).
Transform
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INITIALIZATION Event
Tables Customers.- -Select options sname for customers name.
Initialization. - sname sign = ‘I’. - sname option = ‘EQ’. - sname low = ‘Smith’. append sname.
- -Start of Selection. Select * from customers Where name in sname.
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Select-options Options
Select-options sname for customers-name obligatory. Select-options sname for customers-name no-extension.
Select-options sname for customers-name no intervals.
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Designing Selection Screen
Selection-screen begin of block test with frame Title text-001. . Selection-screen uline. Selection-screen skip 3. Selection-screen comment 3(10) text-001. Parameters month(2) type n. .Selection-screen end of block test.
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Designing Selection Screen
selection-screen begin of line. selection-screen comment 1(7) text-001. selection-screen position 9. parameters month(2) type n. selection-screen comment 16(6) text-002. parameters year(4) type n.selection-screen end of line.
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Designing Selection Screen
Selection-screen begin of block name1 with frame title text-001. Selection-screen begin of line. Parameters test1 radiobutton group test default ‘X’. Selection-screen comment 4(10) text-002. Selection-screen position 35. Parameters tcheck as checkbox. Selection-screen comment 37(15) text-003. Selection-screen end of line. Selection-screen begin of line. Parameters test2 radiobutton group test. Selection-screen comment 4(10) text-004. Selection-screen end of line.Selection-screen end of block name1.
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ABAP Exercise
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Checking User Input
Tables customers. Data pcode _len type i.
-Parameters pcode like customers postcode. - At selection screen.
pcode _len = strlen( pcode ). if pcode _len <> 5. message e000(38) with ‘Please enter postcode 5 characters’. endif.
- -Start of Selection. select * from customers where postcode = pcode. …
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ABAP Exercise
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ABAP Program Processing Steps
TABLES sflight.PARAMETERS nextday LIKE sy-datum.INITIALIZATION. nextday = sy-datum + 1.AT SELECTION-SCREEN . IF nextday < sy-datum. MESSAGE e000(38) WITH ‘Please enter date >= today’. ENDIF.START-OF-SELECTION. SELECT * FROM sflight WHERE ... fldate = nextday… …
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ABAP Practice