topic Re: TRY and ENDTRY in Application Development and Automation Discussions

TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 09:57:50 GMT

Hi,

What is the use of TRY and ENDTRY statement?

Re: TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 09:59:39 GMT

Hi,

Its mainly used for catch the Exceptions.

TRY.

[try_block]

[CATCH cx_class1 cx_class2 ... [INTO oref].

[catch_block]]

...

[CLEANUP [INTO oref].

[cleanup_block]]

ENDTRY.

Thanks.

Re: TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 10:01:12 GMT

Basic form

TRY.

Effect

You catch class-based exceptions in the statement block enclosed by the TRY and ENDTRY statements. To catch these exceptions, you define handlers within the specified TRY block. You introduce a handler using a CATCH statement, followed by the exception classes to be caught and the associated handler code. After the CATCH clauses, you can declare a CLEANUP clause. The statements in the latter clause will be executed if an exception is caught outsidethe TRY block. The structure of the TRY block is as follows:

TRY.

... guarded section

CATCH cx11 ... cx1n [INTO ex1].

... handlers for exceptions cx11 to cx1n

CATCH cx21 ... cx2m [INTO ex2].

... handlers for exceptions cx21 bis cx2m

... other handlers

CLEANUP.

... cleanup block

ENDTRY.

**************************

TRY statement is used when you expect some error/exception condition but not sure of which type of error may be present in a code block.

in that case just wrap the code block in TRY ..ENDTRY block

see this sample code.

TRY.

SORT T_ERGEB-MSG_T_SAP_ACTIVITY-ITEM DESCENDING.

DELETE ADJACENT DUPLICATES FROM T_ERGEB-MSG_T_SAP_ACTIVITY-ITEM.

CALL METHOD ZCO_SAP_ACTIVITY_TOMX=>EXECUTE_ASYNCHRONOUS

EXPORTING

OUTPUT = T_ERGEB

CONTROLLER = L_CONTROLLER.

COMMIT WORK.

CATCH CX_AI_SYSTEM_FAULT INTO L_SYS_EXCEPTION.

SY-MSGV1 = L_SYS_EXCEPTION->ERRORTEXT.

SUBRC = 1.

EXIT.

ENDTRY.

Here we are expecting that this code may generate a CX_AI_SYSTEM_FAULT type of exception. to handle this we have written a catch block.

error of type CX_AI_SYSTEM_FAULT will be handled by this catch block

*****************************

Please check this thread

https://forums.sdn.sap.com/click.jspa?searchID=93818&messageID=2288302

The TRY block is split into different sections using the CATCH and CLEANUP clauses.

Re: TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 10:01:23 GMT

Hi,

For some cases, there might be possiblity of dump. hence you go for the statment with in try and endtry.

Regards,

Niyaz

Re: TRY and ENDTRY

rainer_hbenthal — Thu, 11 Oct 2007 10:02:04 GMT

Its another way of handling error.

instead of

do_something.

if sy-subrc > 0.

do_error_handling.

endif.

you can use

try.

do_something.

catch <exception>

do_error_handling.

endtry.

the advantage is that you can handle system error like division by zero or conversion errors without havening an abend.

Re: TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 10:02:30 GMT

Hi Hema,

There are two options for raising class-based exceptions.

1. System-driven raising in the runtime environment

2. Program-driven raising in the ABAP program

Syntax for TRY .. ENDTRY construct

TRY.

CALL METHOD o1->m1.

PERFORM f1.

CATCH cx_root. "Handler for all exceptions

" ABAP code(What to do when error occures)........

ENDTRY.

FORM f1 RAISING cx_my.

TRY.

IF ...... RAISE EXCEPTION TYPE cx_my2. ENDIF.

CALL METHOD o1->m3.

CATCH cx_my1 cx_my3 INTO ex.

RAISE EXCEPTION TYPE cx_my4.

CATCH cx_my4.

"Handler for exceptions of type cx_my4

" ABAP code(What to do when error occures)........

CLEANUP.

"Cleanup section, used to restore to a consistant state

" ABAP code........

ENDTRY.

ENDFORM.

<a href="http://help.sap.com/saphelp_nw04s/helpdata/en/83/636d2012fc11d5991e00508b5d5211/frameset.htm">TRY and Endtry</a>

Regards,

Sathish

Re: TRY and ENDTRY

Former Member — Thu, 11 Oct 2007 10:03:42 GMT

Try this simple example.

DATA: result TYPE i,

number TYPE i.

CATCH SYSTEM-EXCEPTIONS arithmetic_errors = 4

OTHERS = 8.

result = 1 / number.

ENDCATCH.

IF sy-subrc <> 0.

write:/ 'Exception caught'.

ENDIF.

Reward points if usefull.