topic Re: Access object attribute in table in Application Development and Automation Discussions

Access object attribute in table

Former Member — Wed, 15 Feb 2006 21:10:25 GMT

Greetings-

What is the syntax used to access an attribute of an object that is itself embedded within a cell of a table row? I normally use field symbols to access complex structures, but that doesn't seem to work here (or I'm not doing it right!)

Thanks in advance!

Re: Access object attribute in table

RichHeilman — Wed, 15 Feb 2006 21:20:07 GMT

Do you mean something like this?



report zrich_0003.


*---------------------------------------------------------------------*
*       CLASS lcl_temp DEFINITION
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
class lcl_temp definition.

  public section.

    data: it001 type table of t001.

    methods: constructor.

endclass.


*---------------------------------------------------------------------*
*       CLASS lcl_temp IMPLEMENTATION
*---------------------------------------------------------------------*
*       ........                                                      *
*---------------------------------------------------------------------*
class lcl_temp implementation.

  method constructor.

    select * into table it001 from t001.

  endmethod.

endclass.

data: a_object      type ref to lcl_temp.
data: a_object_list type table of ref to lcl_temp.
data: xt001 type t001.

start-of-selection.

* Create the object and put it in a internal table
create object a_object.
append a_object to a_object_list.

* Read the internal table in the first row and get the object
read table a_object_list into a_object index 1.


* Access the table from the object to write it out.
loop at a_object->it001 into xt001.
  write:/ xt001-bukrs, xt001-butxt.
endloop.

Regards,

Rich Heilman

Re: Access object attribute in table

Former Member — Wed, 15 Feb 2006 22:19:54 GMT

Rich-

Thanks for your reply.

You're headed the right direction, but I need to add a couple of items (that should have been included in my original post!). I'm attempting to access the object's content in the context of a badi. Given this, can I create a class to encapsulate my table as you provided in your example?

Here's the specifics:

Implementation:

Z_MY_IMPLEMENTATION

Interface Name:

IF_EX_HRPAD00INFTYDB

Method:

UPDATE_DB

Importing Parameter:

OPERATION_TAB Type HRAD_DBOPER_LOG_TAB

Structure of HRAD_DBOPER_LOG_TAB

>>Line Type: HRAD_DBOPER_LOG

>>one component of HRAD_DBOPER_LOG = NEW_PNNNN TYPE DATA (at runtime this gets populated with an object)

>>I need to access Field INFTY

I don't like pasting all of my code in as I feel like a kid who is getting his friends to do his homework, but I (obviously) couldn't explain the situation generically without causing confusion.

Message was edited by: Dwight Jones

Re: Access object attribute in table

RichHeilman — Wed, 15 Feb 2006 23:38:23 GMT

Can you please post the code where you are trying to access via field-symbols?

Regards,

Rich Heilman

Re: Access object attribute in table

Former Member — Thu, 16 Feb 2006 13:34:16 GMT

FIELD-SYMBOLS <GENERAL_FIELD> TYPE string.

FIELD-SYMBOLS <GENERAL_STRUC> TYPE HRPAD_DBOPER_LOG.

FIELD-SYMBOLS <GENERAL_SUBSTRUC> TYPE ANY.

FIELD-SYMBOLS <GENERAL_VALUE> TYPE string.

READ TABLE operation_tab INTO ls_operation_tab INDEX 1.

ASSIGN ls_operation_tab-new_pnnnn TO <GENERAL_SUBSTRUC>.

l_struc_type = 'INFTY'.

ASSIGN l_struc_type TO <GENERAL_FIELD>.

ASSIGN COMPONENT <GENERAL_FIELD> OF

STRUCTURE <GENERAL_SUBSTRUC> TO

<GENERAL_VALUE>.

l_infotype = <GENERAL_VALUE>.

I get a short dump b/c <GENERAL_VALUE> is not getting set.

Re: Access object attribute in table

RichHeilman — Thu, 16 Feb 2006 14:08:55 GMT

Please change as the following.



FIELD-SYMBOLS <GENERAL_FIELD> TYPE string.
FIELD-SYMBOLS <GENERAL_STRUC> TYPE HRPAD_DBOPER_LOG.
FIELD-SYMBOLS <GENERAL_SUBSTRUC> TYPE ANY.
<b>*FIELD-SYMBOLS <GENERAL_VALUE> TYPE string.
FIELD-SYMBOLS <GENERAL_VALUE> .</b>

READ TABLE operation_tab INTO ls_operation_tab INDEX 1.

ASSIGN ls_operation_tab-new_pnnnn TO <GENERAL_SUBSTRUC>.

l_struc_type = 'INFTY'.

<b>*ASSIGN l_struc_type TO <GENERAL_FIELD>.</b>
ASSIGN COMPONENT <b>l_struc_type</b> OF
                  STRUCTURE <GENERAL_SUBSTRUC> TO
                             <GENERAL_VALUE>.

l_infotype = <GENERAL_VALUE>.

I hope this works for ya.

Regards,

Rich Heilman

Re: Access object attribute in table

Former Member — Thu, 16 Feb 2006 16:09:26 GMT

Thanks again Rich. I'm still getting a "Field symbol has not yet been assigned" short dump error.

One question--did you intend this?

FIELD-SYMBOLS <GENERAL_VALUE> TYPE string.

FIELD-SYMBOLS <GENERAL_VALUE> .

That gives a compile error. I tried with <GENERAL_VALUE> TYPE ANY without success.

I think the error is arising because <GENERAL_SUBSTRUC> is a data object rather than a table. What gets passed into GENERAL_SUBSTRUC looks something like . INFTY is the second component. I know that there must be an easy way to get at the component, but I can't figure out the syntax.

The structure p0006 is getting passed into the new_pnnnn if that helps.

Re: Access object attribute in table

RichHeilman — Thu, 16 Feb 2006 16:12:01 GMT

Oh sorry, I meant to comment the first.

*FIELD-SYMBOLS <GENERAL_VALUE> TYPE string.
FIELD-SYMBOLS <GENERAL_VALUE> .

Try that.

Regards,

RIch Heilman