topic Re: Comparing Objects in Application Development and Automation Discussions

Comparing Objects

Former Member — Wed, 18 Jun 2008 13:51:29 GMT

Hi,

I have the following situation. Please help me how can i solve this.

I am catching the error into single exception class(

data:lr_exception TYPE REF TO cx_mdm_main_exception,.

CATCH cx_mdm_usage_error INTO lr_exception.

CATCH cx_mdm_provider INTO lr_exception.

CATCH cx_mdm_kernel INTO lr_exception.

CATCH cx_mdm_server_rc_code INTO lr_exception.

CATCH cx_mdm_not_supported INTO lr_exception.

Now i will pass the lr_exception to some other varible for error handling. There i need to know which type of error it is like usage_error or proverder error or kernel error or something like as follow.

If lr_exception type is cx_mdm_usage_error

do something

elseif lr_exception type is cx_mdm_provider

-- do something

endif.

How to do this kind of checking. Please suggest me if you have the soultion.

Thanks and Best Regards,

Vijay

Re: Comparing Objects

Former Member — Wed, 18 Jun 2008 14:52:37 GMT

Hello,

Please see the code bellow:


DATA:
    vehicle type ref to vehicle,
    plane_ref type ref to plane,
    ship type ref to ship.

catch system-exceptions move_cast_error = 4.
  vehicle ?= i_ref.
endcatch.
if sy-subrc = 0.
  "working with vehicle
else.
  "not a vehicle
endif.
catch system-exceptions move_cast_error = 4.
  plane ?= i_ref.
endcatch.
if sy-subrc = 0.
  "working with plane
else.
  "not a plane
endif.
catch system-exceptions move_cast_error = 4.
  ship ?= i_ref.
endcatch.
if sy-subrc = 0.
  "working with ship
else.
  "not a ship
endif.

This was extracted from the book ABAP Objects - An introduction to programming SAP applications from Horst Keller and Sascha Krüger.

Just change the catch mode to TRY and ENDTRY.

Regards.

Re: Comparing Objects

Former Member — Mon, 23 Jun 2008 09:40:36 GMT

Hi,

This should be simple.

In each exception class you can have a "static attribute" that defines the name of the class.

Now when you catch the exception you can determine which class it refers to by using this value.

For example:

TRY.

CASE lr_exception->class_id.

WHEN (cx_mdm_usage_error). -

> This can be a hardcoded value

do something..

WHEN (cx_mdm_provider).

do something.

WHEN OTHERS.

RAISE unsupported_object_type.

ENDCASE.

ENDTRY.

I hope this helps.

Regards,

Saurabh

Re: Comparing Objects

Former Member — Mon, 23 Jun 2008 16:38:36 GMT

Hi Vijay,

This is the siplest way to handle all your exceptions.You should go through this code. You can easily understanding.If any queries, ask me.

DATA: l_exceptions TYPE REF TO CX_ROOT,

l_excstring type string.

try.

catch l_exceptions into l_excstring.

case l_excstring.

WHEN cx_mdm_usage_error.

do something..

WHEN cx_mdm_provider.

do something.

WHEN cx_mdm_kernel

do something.

WHEN cx_mdm_server_rc_code.

do something.

WHEN cx_mdm_not_supported.

do something.

WHEN OTHERS.

RAISE unsupported_object_type.

ENDCASE.

ENDTRY.

If it useful, reward points.

Thank you,

Prasad G.V.K

Re: Comparing Objects

Former Member — Fri, 17 Dec 2010 15:14:14 GMT

This message was moderated.