Multiple implementation of a BADI

Question

Hi All,
I want to know the process in which a particular instance of a BADI gets invoked. Let me give a example.
If we want to create a implementation of the multiple use BADI  definition  /DCEUR/Z_ACTION_INTR, we will provide some implementation like /DCEUR/ACTION_AAA, or  /DCEUR/ACTION_BBB for the BADI definition /DCEUR/Z_ACTION_INTR which are being used in some specific context. Now I want to know how we can design the specific implementaion so that the proper implementation gets called in the desired context.
To be specific: How can we match the specific implementation with its point of invocation. I mean suppose we want to execute action AAA then /DCEUR/ACTION_AAA will be called
if we execute action BBB then the implementation /DCEUR/ACTION_BBB will be called. Although the code is same altogether but different implementations will be called according to requirement. Please explain the above know how.
Thanks,
Sudipto

Answer 1

Hi Sudipto,
If multiple Implementations of a BADI are created, then all the implementations would be called one after the another.
Say there is a BADI ABC. This BADI has methods METHOD1, METHOD2, METHOD3 and METHOD4.
Your requirement may be such that you have to use METHOD2 and METHOD4. Someone else also has to use the same two methods.
Then you would create an Implimentation ZABC_1 and the other person would create an Implementation ZABC_2.
Whenever the BADI is involved both the implementations would be called one after the other.
But in your BADI implementation you can handle the processing based on condition checks that you would put in methods METHOD2 and METHOD4.
Say you are checking for SY-UNAME = 'USER1' and you dont want your BADi to run for other users.
Then in both the methods of your BADI implimentation ZABC_1 would would write
CHECK sy-uname eq 'USER1'.
This would restrict methods METHOD2 and METHOD4 of BADI implimentation ZABC_1 to run only when the login user is USER1.
I hope that this will help.
Regards,
Abhisek.