topic Re: Dynamic access to attributes in Application Development and Automation Discussions

Dynamic access to attributes

Former Member — Wed, 02 Jun 2010 07:22:46 GMT

Hi all

I have a class with many public static attributes. To provide a generic solution I want to access the value of such an attribute dynamically at run-time. Unfortunately am I not able to do it. Can you help me with this issue?

The following code fragment for instance is not allowed. In this case I receive the syntax error that 'Dynamic attribute declarations are not supported in the current statement'.


DATA: 
lv_txt         TYPE string,
lv_attribute   TYPE string.

lv_attribute = 'TEST'.
lv_txt = Z_TEST=>(lv_attribute).

Any hint is welcome...

Thanks, Mathias

Re: Dynamic access to attributes

Former Member — Wed, 02 Jun 2010 07:48:44 GMT

hi,

you could do a little workaround by calling a get-method dynamicly, which will return the attribute you would like to read:

CALL METHOD Z_TEST=>(ld_methodname)

greetings,

dsp

Re: Dynamic access to attributes

Former Member — Wed, 02 Jun 2010 08:08:07 GMT

Hi dsp

I don't think that this will do the trick. If I just call a get method and provide the name of the attribute as import parameter, I get method must now determine the attribute dynamically. I want to avoid in any case any SWITCH or IF cases, I want to access attribute values dynamically.

Regards, Mathias

Re: Dynamic access to attributes

Former Member — Wed, 02 Jun 2010 08:12:26 GMT

hi,

you could concatenate the methodname, but you would still need to implement a real method which will returnjust the specific attribute:

concatenate 'get_' ld_attribute into ld_methodname

Re: Dynamic access to attributes

MarcinPciak — Wed, 02 Jun 2010 08:16:00 GMT

You have to access it using dynamic assing


FIELD-SYMBOLS <attr> TYPE string.

ASSIGN cl_abap_char_utilities=>('HORIZONTAL_TAB') TO <attr>.

Regards

Marcin

For reference [Accessing Class Components |http://help.sap.com/abapdocu_70/en/ABENCLASS_COMPONENTS_ADDRESSING.htm]

Edited by: Marcin Pciak on Jun 2, 2010 10:16 AM