Best Practice: Class Based Exception Handling - differentiate by Exception Text ID

Hi folks,

because I did not find a good explanation somewhere, I will just ask you for your experiences or better: Best practices:

Scenario: I created ABAP OO application, including a ZCL_VALIDATOR for some input checks.  I have a Exception class ZCX_VALIDATOR, which has several TextIDs for the different checks in ZCL_VALIDATOR.

Now, a classic SAP Dynpro should call my application, give some input

like:

DATA lo_validator type ref to ZCL_VALIDATOR.
try.     lo_validator->CHECK_MATNR( iv_matnr = lv_matnr )
catch EXCEPTION TYPE ZCX_VALIDATOR into DATA(lo_exc).
endtry.

Check_matnr does several checks and raises ZCX_VALIDATOR, but dependent on the error case, the GUI should show a 'E' or 'I'.

My approach would be like:

DATA lo_validator type ref to ZCL_VALIDATOR.
try.     lo_validator->CHECK_MATNR( iv_matnr = lv_matnr )
catch EXCEPTION TYPE ZCX_VALIDATOR into DATA(lo_exc).
if lo_exc->textid-msgid eq 'abc'.     MESSAGE type lo_exc DISPLAY LIKE 'I'
else.     MESSAGE type lo_exc DISPLAY LIKE 'E'.
endtry.

Question: Is there any other way to to this?

Thanks for your thoughts on this.

Greetings

michael