topic Threading in ABAP OO in Application Development and Automation Discussions

Threading in ABAP OO

Former Member — Sun, 31 Oct 2004 09:24:53 GMT

Can I define synchronized method in ABAP class similar to one in Java (I mean method available to different threads subsequently but not simultaneously)?

If there's no real threading in ABAP OO how such behavior can be simulated?

Thanks,

Yacov

Re: Threading in ABAP OO

ssimsekler — Sun, 31 Oct 2004 10:35:33 GMT

Hi Yacov

I guess you need some parallel processing. OO method call does not support this. However, you can achieve this by calling function modules at background or starting new tasks (<b>CALL FUNCTION STARTING NEW TASK IN DESTINATION GROUP, WAIT, and RECEIVE keywords</b>). To do this in OO context, call functions via one of these ways within your methods i.e. wrap them with your methods.

For more information, inspect the following links:

<a href="http://help.sap.com/saphelp_47x200/helpdata/en/fa/096ff6543b11d1898e0000e8322d00/frameset.htm">Parallel-Processing Function Modules</a>

<a href="http://help.sap.com/saphelp_47x200/helpdata/en/a5/63235f43a211d189410000e829fbbd/frameset.htm">Background Processing</a>

*--Serdar

Re: Threading in ABAP OO

Former Member — Mon, 01 Nov 2004 07:21:41 GMT

Hi Yacov,

Use Update Function module.

Creation: From attributes tab of function module select the option UPDATE FUNCTION.

Syntax: CALL FUNCTION <FUNCTION NAME> IN UPDATE TASK

TABLES

......

<paratable n = tablename n> .

COMMIT WORK.

Limitations:

1. Import, Export and Change parameters are not allowed. All the data should be passed using Table parameter.

2. All the runtime expections should be handled manually otherwise session will terminate.

3. COMMIT statement should not used in Function module.

Debugging: Update functions can't debugged as ordinary ABAP programs or functions. Select the option Update Debugging from setting option of debugging screen.

Have a nice day

Venkat