topic Re: OLE & ABAP in Application Development and Automation Discussions

OLE & ABAP

Former Member — Thu, 26 Jan 2006 23:07:31 GMT

Hi,

I have a problem. I have a function which's signature is;

bool isPossible(); //in .NET environment

And the corresponding code of this signature in ABAP/4;

DATA: RESULT TYPE I VALUE 8.

DATA: APP TYPE OLE2_OBJECT.

...

CREATE OBJECT APP 'X.APPLICATION'.

CALL METHOD OF APP 'isPossible' = RESULT.

But, I see that RESULT is 8, not changed. How can I get the result of isPossible method. Normally, it returns boolean value. But in ABAP, what is the corresponding type of boolean?

Thanks.

Re: OLE & ABAP

Former Member — Thu, 26 Jan 2006 23:16:44 GMT

The boolean equivalen in SAP is: <b>SAP_BOOL</b> (X=True, Space=False)

Re: OLE & ABAP

Former Member — Fri, 27 Jan 2006 22:07:33 GMT

Hi Sam,

Is there any include to use SAP_POOL? I can not define like;

DATA RESULT TYPE SAP_BOOL.

Compiler gives error as: "SAP_BOOL IS UNKNOWN"

Thanks.

Re: OLE & ABAP

Former Member — Fri, 27 Jan 2006 22:14:47 GMT

it should work.

try like this.

data: b1 type SAP_BOOL.

Re: OLE & ABAP

Former Member — Fri, 27 Jan 2006 22:17:48 GMT

No you dont! Maybe it is your vesion.

Goto SE11 and see if you have the data type SAP_BOOL

Re: OLE & ABAP

Former Member — Fri, 27 Jan 2006 22:37:38 GMT

Hi, I have just checked SAP_BOOL from SE11. There is no type as SAP_BOOL. But there is another type BOOLEAN. I have used this type for my purpose;

DATA RESULT type BOOLEAN.

DATA: APP TYPE OLE2_OBJECT.

...

CREATE OBJECT APP 'X.APPLICATION'.

CALL METHOD OF APP 'isPossible' = RESULT.

isPossible method returns true. But, RESULT is ''. Also, I changed the condition that isPossible return false, but again RESULT is ''. I mean that I can not get the result of this method in OLE. What should I do?

Re: OLE & ABAP

Former Member — Sat, 28 Jan 2006 01:50:19 GMT

hi, try this way;

CALL METHOD OF APP 'isPossible' = RESULT <b>NO FLUSH</b>.

Hope it will be helpful

Re: OLE & ABAP

Former Member — Sat, 28 Jan 2006 04:37:32 GMT

Hi Huseyin,

1. Try with C(10)

ie. some character having some length

regards,

amit m.

Re: OLE & ABAP

former_member182670 — Sat, 28 Jan 2006 09:24:23 GMT

You should use type C, beacuse OLE methods with return type boolean return '0' or '1' in ABAP instead of 'X' and ' '.

You should note that ABAP buffers OLE statements to first non-OLE statement.

So when you write this code and check value of lv_b in debugger it will be empty:


REPORT ZOLE .

INCLUDE ole2incl .

 DATA: lr_o TYPE ole2_object,
       lv_b type c.


CREATE OBJECT lr_o 'BT.BTester'.

CALL METHOD OF lr_o 'retT' = lv_b .


CALL METHOD OF lr_o 'retF' = lv_b .

but when you write


REPORT ZOLE .

INCLUDE ole2incl .

 DATA: lr_o TYPE ole2_object,
       lv_b type c.


CREATE OBJECT lr_o 'BT.BTester'.

CALL METHOD OF lr_o 'retT' = lv_b .
check sy-subrc = 0.

CALL METHOD OF lr_o 'retF' = lv_b .
check sy-subrc = 0.

you should see that after call of 'retT' lv_b hasa value '1' and after call of 'retF' lv_b is '0'.

Thats beacuse 'check sy-subrc = 0.' is non-OLE statement and it causes ABAP to execute previous buffered OLE statements.

PS. BT.BTester was my test object with two methods:

retT - simply returns true

retF - returns false

Message was edited by: Tomasz Mackowski

Re: OLE & ABAP

Former Member — Sun, 29 Jan 2006 14:46:44 GMT

Thanks Tomasz