topic Re: event in Application Development and Automation Discussions

event

Former Member — Fri, 29 Jun 2007 07:13:44 GMT

HI,

WHAT ARE THE USER-DEFINED EVENTS ? HOW CAN WE RAISE PROGRAMMATICALLY

THANK YOU

ASHOK KUMAR

Re: event

Former Member — Fri, 29 Jun 2007 07:17:40 GMT

HI,

see this example.

REPORT demo_class_counter_event.

CLASS counter DEFINITION.

PUBLIC SECTION.

METHODS increment_counter.

EVENTS critical_value EXPORTING value(excess) TYPE i.

PRIVATE SECTION.

DATA: count TYPE i,

threshold TYPE i VALUE 10.

ENDCLASS.

CLASS counter IMPLEMENTATION.

METHOD increment_counter.

DATA diff TYPE i.

ADD 1 TO count.

IF count > threshold.

diff = count - threshold.

RAISE EVENT critical_value EXPORTING excess = diff.

ENDIF.

ENDMETHOD.

ENDCLASS.

CLASS handler DEFINITION.

PUBLIC SECTION.

METHODS handle_excess

FOR EVENT critical_value OF counter

IMPORTING excess.

ENDCLASS.

CLASS handler IMPLEMENTATION.

METHOD handle_excess.

WRITE: / 'Excess is', excess.

ENDMETHOD.

ENDCLASS.

DATA: r1 TYPE REF TO counter,

h1 TYPE REF TO handler.

START-OF-SELECTION.

CREATE OBJECT: r1, h1.

SET HANDLER h1->handle_excess FOR ALL INSTANCES.

DO 20 TIMES.

CALL METHOD r1->increment_counter.

ENDDO.

reward if helpful

rgds,

bharat.

Re: event

Former Member — Fri, 29 Jun 2007 08:14:33 GMT

check with this program to handle events

&----

*& Report ZAACLC_REPORT

&----

REPORT zaaclc_report.

----

CLASS lcl_test_class DEFINITION

----

CLASS lcl_test_class DEFINITION.

PUBLIC SECTION.

METHODS increment_counter.

EVENTS break_statement EXPORTING value(count) TYPE i.

PRIVATE SECTION.

DATA: num TYPE i,

max TYPE i VALUE 5.

ENDCLASS. "lcl_test_class DEFINITION

----

CLASS lcl_test_class IMPLEMENTATION

----

CLASS lcl_test_class IMPLEMENTATION.

METHOD increment_counter.

num = num + 1.

IF num EQ max.

RAISE EVENT break_statement EXPORTING count = num.

ENDIF.

WRITE:/ num .

ENDMETHOD. "increment_counter

ENDCLASS. "lcl_test_class IMPLEMENTATION

----

CLASS event_receiver DEFINITION

----

CLASS event_receiver DEFINITION.

PUBLIC SECTION.

METHODS handler FOR EVENT break_statement OF lcl_test_class IMPORTING count.

endclass.

----

CLASS event_receiver IMPLEMENTATION

----

CLASS event_receiver IMPLEMENTATION.

METHOD handler.

count = count + 10.

WRITE 😕 count.

WRITE 😕 'Event Raised'.

endmethod.

ENDCLASS. "event_receiver IMPLEMENTATION

DATA:obj TYPE REF TO lcl_test_class,

rec TYPE REF TO event_receiver.

START-OF-SELECTION.

CREATE OBJECT: obj,rec.

set handler rec->handler for obj." for all instances.

DO 10 TIMES.

CALL METHOD obj->increment_counter.

ENDDO.

regards

dinesh

Re: event

Former Member — Fri, 29 Jun 2007 08:16:51 GMT

Hi,

Events are the markers that define certain code that is to occur at certain time in the pgm.They help how your pgm should run.

Certain events governed by the AT COMMAND, for ex: used in interactive report.

Other events like INITIALIZATION, and START-OF-SELECTION., defines at the data selection occurs.

The EVENTS are :

INITIALIZATION.

START-OF-SELECTION

END-OF-SELECTION

AT USER-COMMAND

AT LINE-SELECTION

AT PFFUNCTION KEY NUMBER

AT SELECTION-SCREEN

AT NEW FIELD

AT END OF FIELD

AT FIRST

AT LAST

AT FIELD-GROUP.

example1

data: p_year for sy-datum.

initialization.

if sy-datum ge '28062007'

p_year = '2007'

else

p_year = 'yesteryear'.

endif.

example 2.

selectio-screen pushbutton10(20) text-0001 user-command engl.

selectio-screen pushbutton50(20) text-0002 user-command germ.

at selection-screen.

at user-command

case sy-ucomm.

when 'engl'.

lang-english = 'y'.

when 'germ'.

lang-german = 'y'.

endcase.

we can use similarly all the events.

Regards

Raghavendra.D.S.

Re: event

Former Member — Fri, 29 Jun 2007 09:47:41 GMT

Hi Ashok

Events: Application:----

Print-end_of_list Define output text to be printed at the end of the entire list

Print-top_of_list Define output text to be printed at the beginning of the entire list

Print-end_of_page Define output text to be printed at the end of each page

Print-top_of_page Define output text to be printed at the beginning of each page

subtotal_tesxt Define self-defined subtotals texts.

This events will be used for ALV report.

If its useful reward points

Thanks

senthil

Re: event

Former Member — Fri, 29 Jun 2007 10:11:07 GMT

7 events are there in classical report.

1.load of program.

2.initialization.

3.at selection screen

4.start of selection.

5.end of selection.

6.top of page.

7.end of page.

control level statements are

1.at new <f>

2.at end of <f>

3.at first

4.at last.

5.sum 6.on change of <f> etc.

drill down report events are

1.at line selection.

2.at user command.

3.at PF key

4.top of page during line selection.

example program for events in classical report.

report line-count 2(25) line-size 200.

TABLES : KNA1.

DATA: WA_CUST TYPE KNA1,

IT_CUST TYPE TABLE OF KNA1.

DATA T1 TYPE I.

SELECTION-SCREEN BEGIN OF BLOCK BL1 WITH FRAME TITLE TEXT-100.

SELECT-OPTIONS CUST FOR KNA1-KUNNR .

SELECTION-SCREEN END OF BLOCK BL1.

INITIALIZATION.

T1 = 100.

AT SELECTION-SCREEN.

if cust eq space.

MESSAGE W000(8I) with TEXT-101.

E - Error - Stop the process
I - Information - Display message and Continue with process
W - Warning - Display warning and stop till the Enter is hited
again

endif.

AT SELECTION-SCREEN ON HELP-REQUEST for cust-low.

T1 = 200.

END-OF-SELECTION.

LOOP AT IT_CUST INTO WA_CUST.

WRITE: / WA_CUST-KUNNR, WA_CUST-NAME1, WA_CUST-ORT01.

ENDLOOP.

START-OF-SELECTION.

SELECT * FROM KNA1 INTO TABLE IT_CUST WHERE KUNNR IN CUST.

TOP-OF-PAGE.

write 'Customer Details'.

end-of-page.

write: / 'Eminent Technologies'.