topic Re: Casting from reference to data -> class in Application Development and Automation Discussions

Casting from reference to data -> class

marcin_cholewczuk — Sat, 22 Sep 2012 16:43:36 GMT

Hi all,

how can I cast object that was declared as REF TO DATA on REF TO cl_some_class?

DATA: lr_source TYPE REF TO data.
FIELD-SYMBOLS: <lr_dest> TYPE REF TO CL_WDR_CONTEXT_ELEMENT.

I've tried:

ASSIGN lr_source->* TO <lr_dest> CASTING.

but it's leading to error. Any ideas?

Best Regards

Marcin Cholewczuk

Re: Casting from reference to data -> class

Former Member — Sat, 22 Sep 2012 18:49:24 GMT

You have to use "Create data" statement before de-referencing data reference variable.

CREATE DATA lr_source TYPE REF TO cl_wdr_context_element

Regards,Vinod

Re: Casting from reference to data -> class

marcin_cholewczuk — Sat, 22 Sep 2012 21:31:27 GMT

Data was already created by SAP (as you can see in screenshot). I need only to cast it to other type.

Best regards

Marcin Cholewczuk

Re: Casting from reference to data -> class

iftah_peretz — Sat, 22 Sep 2012 21:36:25 GMT

Hi,

Whats the error you are getting when using

ASSIGN lr_source->* TO <lr_dest> CASTING.

Best,

Iftah

Re: Casting from reference to data -> class

marcin_cholewczuk — Sat, 22 Sep 2012 21:41:02 GMT

Hi,

it's webdynpro application and on www I'm getting

500 SAP Internal Server Error

ERROR: Type conflict with ASSIGN in program /1BCWDY/H1UTWYPFI3KEUNC5NTTT==CP . (termination: RABAX_STATE)

Best regards

Marcin Cholewczuk

Re: Casting from reference to data -> class

iftah_peretz — Sat, 22 Sep 2012 22:23:05 GMT

Hi,

I know it's a webdynpro.

Ok, so I can help you, I need the code in the method where you are using it (for example in

WDDOINIT,WDDOMODIFYVIEW) because it is not clear how did you created the reference lr_source. Meanwhile try (with out the casting):

ASSIGN lr_source->* TO <lr_dest>.

Best,

Iftah.

Re: Casting from reference to data -> class

marcin_cholewczuk — Sat, 22 Sep 2012 22:31:52 GMT

Ok, i did it.

DATA: lr_source TYPE REF TO data,

           lr_dest TYPE REF TO CL_WDR_CONTEXT_ELEMENT.
FIELD-SYMBOLS: <lr_any> TYPE ANY.

   ASSIGN lr_source->* TO <lr_any>.
   lv_dest ?= <lr_any>.

Best Regards

Marcin Cholewczuk