topic Re: using field symbols in OOPs programming...have ur points. in Application Development and Automation Discussions

using field symbols in OOPs programming...have ur points.

Former Member — Fri, 28 Sep 2007 09:43:27 GMT

Hi all,

I want to use field symbols in OOPS programming like this...

But the system is giving me dump....help me.

START-OF-SELECTION.

CREATE OBJECT OBJ.

FIELD-SYMBOLS : <AB> TYPE ANY.

ASSIGN OBJ TO <AB>.

CALL METHOD <AB>->add

EXPORTING

a = 4

b = 6

changing

c = Z

WRITE : / Z.

Re: using field symbols in OOPs programming...have ur points.

Former Member — Fri, 28 Sep 2007 10:08:22 GMT

Hi Pradeep,

Is this your complete code?

Regards,

Ravi

Re: using field symbols in OOPs programming...have ur points.

Former Member — Fri, 28 Sep 2007 10:26:24 GMT

check the code below

TYPES: BEGIN OF t_struct,

col1 TYPE i,

col2 TYPE i,

END OF t_struct.

DATA: dref1 TYPE REF TO data,

dref2 TYPE REF TO data.

FIELD-SYMBOLS: <fs1> TYPE t_struct,

<fs2> TYPE i.

CREATE DATA dref1 TYPE t_struct.

ASSIGN dref1->* TO <fs1>.

<fs1>-col1 = 1.

<fs1>-col2 = 2.

dref2 = dref1.

ASSIGN dref2->* TO <fs2> CASTING.

WRITE / <fs2>.

GET REFERENCE OF <fs1>-col2 INTO dref2.

ASSIGN dref2->* TO <fs2>.

WRITE / <fs2>.

reward points if helpful.........

Re: using field symbols in OOPs programming...have ur points.

Former Member — Fri, 28 Sep 2007 11:12:36 GMT

Pradeep,

In this piece of code you have declared your field symbol as TYPE ANY. In this case when you do a call method it will give you errors. Instead of this declare the field sybol as the type of the calling class. refer to this syntax -


REPORT  ZSKC_TEST4 MESSAGE-ID IH
        NO STANDARD PAGE HEADING.

TYPES : TYP_CONT TYPE REF TO CL_GUI_CUSTOM_CONTAINER.
DATA : L_CONT TYPE REF TO CL_GUI_CUSTOM_CONTAINER.

DATA : L_HEIGHT TYPE I.

FIELD-SYMBOLS : <FS> TYPE TYP_CONT.

START-OF-SELECTION.

CREATE OBJECT L_CONT EXPORTING CONTAINER_NAME = 'TEST'.

ASSIGN L_CONT TO <FS>.

CALL METHOD L_CONT->GET_HEIGHT
  IMPORTING
    HEIGHT     = L_HEIGHT
  EXCEPTIONS
    CNTL_ERROR = 1
    others     = 2.

WRITE L_HEIGHT.

CALL METHOD <FS>->GET_HEIGHT
  IMPORTING
    HEIGHT     = L_HEIGHT
  EXCEPTIONS
    CNTL_ERROR = 1
    others     = 2.

WRITE L_HEIGHT.

Just make sure your OBJ is initialized, u can check that in debugging mode.