WD ABAP: Object expected

Hi all,
When I want to test my ABAP webdynpro application in Internet Explorer. I get a blank screen with an error "object expected". Does anyone know how I can solve this problem?
Liesbeth

Hi,
did you carry out all the configuration settings (see http://help.sap.com/saphelp_nw2004s/helpdata/en/43/e86de5008b4d9ae10000000a155369/frameset.htm), especially the active services in SICF?
Regards, Heidi

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ABAP list processing statements in ABAP Objects

Hi,
Based on the Online help "The ABAP statements used for list processing are not yet fully available in ABAP Objects".
Is there any chnage planned about this for the next WAS release?
Thanks,
Peter

Hi Peter
I believe, most of the measures taken are for some compatibility and performance issues. So, there is no need to expect great changes about this.
*--Serdar

FAQ's, intros and memorable discussions in the ABAP Objects Forum

Welcome to the SDN ABAP Objects Forum!
In addition to release dependent information avalaible by:
- pressing the F1 key on an ABAP statement,
- or searching for them in transaction ABAPDOCU,
- using the [SDN ABAP Development Forum Search|https://www.sdn.sap.com/irj/sdn/directforumsearch?threadid=&q=&objid=c42&daterange=all&numresults=15&rankby=10001],
- the information accessible via the [SDN ABAP Main Wiki|https://wiki.sdn.sap.com/wiki/display/ABAP],
- the [SAP Service Marketplace|http://service.sap.com] and see [SAP Note 192194|https://service.sap.com/sap/support/notes/192194] for search tips,
- the 3 part [How to write guru ABAP code series|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f2dac69e-0e01-0010-e2b6-81c1e8e5ce50] ... (use the search to easily find the other 2 documents...)
... this "sticky post" lists some threads from the ABAP forums as:
- An introduction for new members / visitors on topics discussed in threads,
- An introduction to how the forums are used and the quality expected,
- A collection of some threads which provided usefull answers to questions which are frequently asked, and,
- A collection of some memorable threads if you feel like reading some ABAP related material.
The listed threads will be enhanced from time to time. Please feel welcome to post to [this thread|Suggestions thread for ABAP FAQ sticky; to suggest any additional inclusions.
Note: When asking a question in the forum, please also provide sufficient information such that the question can be answered usefully, do not repeat interview-type questions, and once closed please indicate which solution was usefull - to help others who search for it.
ABAP Objects
About polymorphism - still not sure after searching... => Polymorphism adaptation with referencing the source, and a Guest who did not...

Obsolete ABAP Statements from 2004s - what about your existing code-base? A great discussion about the changes in syntax checking between 46c and basis release 7.0.

ABAP Object or function module?

Hello all!
I have to create a reusable routine. This routine should be select data from Z table for to get data with a parameter ID. I will pass a ID and expect result a internal table with some parameter values.
So, my question is: What i use for to do that? ABAP Object or function module?
I think that so easy to use function module. Why i should to use ABAP objects? What is positive points in use object and not function module?
For me, both do the same thing... i don't see any difference. Just object is more complicated.
Please, tell me why should i use object??
Edited by: Rodrigo Kenji Matsunaga on Dec 10, 2009 5:51 PM

I would go with Class.
Read through this discussion:
Needing Evidence on the Advantages of ABAP OO
Class would provide you a flexibility of inheritance. E.g. if you want to use the same data selection with little modification in your other applications, you can inherit some other class form this class. Redefine the method, call the Super's method and change the output before sending back to the caller.
Regards,
Naimesh Patel

ABAP Object X Design Patterns X Extreme Program

Hi Evebody,
Im postgraduate in Object Oriented Analysis and Programming.
Ive been working with ABAP procedural development for two years and Ive started to work with ABAP Objects has few months.
Id like to get deeply knowledge in my developments skills, could someone tell me if ABAP Object X Designer Patterns X Extreme Program is a good path to follow?
Id like to share material and guides about this topic.
Ive already bought these books to help me.
ABAP Objects - H. Keller; Hardcover (Pre-Order)
Design Patterns Explained - Alan Shalloway
Ill be very grateful with any help.

> And do you think these themes are a great combination
> for ABAP development?
Design pattern are very abstract and can be used with any OO programming language. The implementations will differ but the core concepts are always the same.
XP is an agile development process and can also be used with any programming language.
Learning what design pattern are and how to use them is very important in my opinion. Most companies expect that you are familiar and have experience with them.
Extreme Programming (XP) on the other side is different. When I began to explore XP it got me started on how software should be developed in general. Since the concepts behind XP are quite different, it should at least stimulate you to start thinking about how you develop software at the moment and if there might be better ways of doing it.
If you have only time to study one subject go for the design pattern. You might also consider reading the following books if you want to improve your OO coding skills:
<a href="http://www.amazon.com/Refactoring-Improving-Design-Existing-Code/dp/0201485672/ref=pd_bbs_sr_1/102-4989641-7820932?ie=UTF8&s=books&qid=1173448197&sr=8-1">Refactoring: Improving the Design of Existing Code (a true classic)</a>
<a href="http://www.amazon.com/Refactoring-Patterns-Addison-Wesley-Signature-Kerievsky/dp/0321213351/ref=pd_bbs_sr_2/102-4989641-7820932?ie=UTF8&s=books&qid=1173448197&sr=8-2">Refactoring to Patterns (Shows how to improve code by introducing design pattern)</a>
cheers
Thomas

ABAP objects, drilling down into methods/parameter/method/parameter...

Hello all,
When creating or changing purchase orders using the enjoy transactions ME21N and ME22N, I want to force the users to have the same delivery address on every line item. I have found and activated the BADI ME_PROCESS_PO_CUST. I have added some code in method CHECK and put a breakpoint on that code. The transaction is stopping on my breakpoint. So far so good.
Parameter IM_HEADER is of type IF_PURCHASE_ORDER_MM,
that has method GET_ITEMS,
that has parameter RE_ITEMS that is a table of of type PURCHASE_ORDER_ITEMS,
method GET_DATA
with parameter RE_DATA
with fields ADRNR & ADRN2
From inside of the method CHECK of BADI, what syntax do I need to create an internal table of the line item fields that are in parameter RE_DATA of method GET_DATA? I am just starting to work with ABAP objects. Any help would be greatly appreciated.
Thanks
Bruce

Uwe, thanks for the quick response.
Your solution,
DATA: lt_items      TYPE purchase_order_items,
           ls_item       TYPE purchase_order_item.
CALL METHOD im_header->get_items
   receiving
     re_items = lt_items.
Short version:
lt_items = im_header->get_items( ).
LOOP AT lt_items INTO ls_item.
do something
ENDLOOP.
got me very close to the solution. The table lt_items contain the number of entries corresponding to the actual line items. But the data element ls_item does not contain the fields I'm expecting from:
method GET_DATA ,
parameter RE_DATA,
type MEPOITEM.
How do I populate ls_item with the 197 fields from structure MEPOITEM?
If I knew more about ABAP objects, I'm sure I could easily change the code myself. But today, I need the generosity of others to help me solve this.
Thanks
Bruce

Logical Database in Abap Objects

Hi to All
I want do it a program report using a Logical Database.
Is this possible ??? But when I make a GET <node>, occurs the following error:
 "" Statement "ENDMETHOD" missing. ""
I'm doing the following:
CLASS MONFIN IMPLEMENTATION.
 METHOD TRAER_DATOS.
 GET VBRK.
 ENDMETHOD.
ENDCLASS.
Please, somebody tell me how I use the logical database in Abap Objects.
Thank you very much
Regards
Dario R.

Hi there
Logical databases whilst of "some use" are not really part of OO.
If you want to use a logical database in an abap OO program I would create a special class which just does the get data from your DB and pass this either at record or table level.
Techniques such as GET XXXX LATE aren't really part of any OO type of application since at Object Instantiation time you should be able to access ALL the attributes of that object.
As far as OO is concerned Logical databases are a throwback to "Dinosaur Technology".
Since however modules such as SD and FI are still heavily reliant on relational structures (i.e linked tables etc) then there is still some limited life in this stuff but for OO try and solve it by another method.
If you really must use this stuff in OO then do it via a FMOD call and save the data in a table which your method will pass back to your application program.
You can't issue a GET command directly in a method.
Cheers
Jimbo

Adding leading zeros in abap objects.

Can anyone explain me
1. How to add leading zeros to a field in abap objects.
For eg:
data: dmb(6) type c value '123456',
actually the output value of c should have leading zeros added to it for length 16.
i.e '0000000000123456' . If the length of dmb is less than 16 then leading zeros should be added to that value to make it 16 as length.
Please tell me how to do it in ABAP Objects.

Hi Camila
Try to use the statement
DATA: ALPHABET(15) VALUE ' ABCDEFGHIJ',
 M1(4) VALUE 'ABCD',
 M2(6) VALUE 'BJJCA '.
SHIFT ALPHABET LEFT DELETING LEADING M1.
The field
ALPHABET
remains unchanged.
SHIFT ALPHABET LEFT DELETING LEADING SPACE.
The field ALPHABET now has the following contents:
'ABCDEFGHIJ '.
SHIFT ALPHABET RIGHT DELETING TRAILING M2.
ALPHABET now has the following contents:
' ABCDEFGHI'.
IN CHARACTER MODE
Effect
This is the default setting (see above), and the addition is therefore optional.
Note
Performance:
For performance reasons, you should avoid using SHIFT in WHILE loops.
The runtime required to shift a field with length 10 by one character to the right or left requires about 5 msn (standardized microseconds). A cyclical shift requires around 7 msn. The runtime for the ...
LEFT DELETING LEADING
... variant is around 3.5 msn, for ...
RIGHT DELETING TRAILING
... around 4.5 msn.
Reward all helpfull answers
Regards
Pavan

Significance of Interfaces in ABAP Objects

Hi Guys, here I have a query -
Why do we use Interfaces in ABAP Objects?, and what is the significance of Interfaces in ABAP Objects?
Please clarify the above with a suitable example.

Moderator message - Welcome to SCN.
But
Moderator message - But this isn't a training forum. Please ask a specific question - post locked

Exception 'error_message' in ABAP Objects

I've got a heterogeneous scenario with new program parts in ABAP objects and older parts in classical ABAP.
In the older parts some R/3 standard functions are called which dump dialog messages which are not allowed at that state of the program flow ('on commit').
The simple solution in classical ABAP was to use standard exception 'error_message' in the top level 'call function' statement thus catch all dialog messages in lower levels.
I am looking for an analog solution in object oriented ABAP. But exception 'error_message' is not allowed with 'call method'. It cannot be defined statically in the methods declaration. And the system exception caused by the dialog error message is not included in the set of catchable system errors.
I would be grateful for any hints concerning this problem.

Hi
Excuse me! But I didn't want to sent you my answer.
Anyway:
CLASS lcl_my_class DEFINITION.
PUBLIC SECTION.
    METHODS my_method
              EXPORTING
                EXCEPTION TYPE CHAR1
              EXCEPTIONS error_messages.
ENDCLASS.                    "LCL_MY_CLASS DEFINITION
CLASS lcl_my_class IMPLEMENTATION.
METHOD my_method.
    IF EXCEPTION = 'X'.
      MESSAGE e208(00) WITH 'Message error'
                  RAISING error_messages.
    ELSE.
      MESSAGE I208(00) WITH 'OK!'.
    ENDIF.
ENDMETHOD.                    "MY_METHOD
ENDCLASS.                    "LCL_MY_CLASS IMPLEMENTATION
So you did want to do a call like this:
CALL METHOD lcl_my_class=>my_method
   EXCEPTIONS
     error_messages = 1
     error_message = 2
     OTHERS         = 3.
No! you can't do it, but you try to insert your call in fm where you use ERROR_MESSAGE addition. I think you can do it if your methods are std.
Max
Message was edited by: max bianchi

Re : select-options in abap-objects program

Dear friends,
                  I want to give select-options in abap-objects program. How to give that.
                             Thanking You
with regards,
Mani

In the transaction SE24, enter your class name, click modify.
in the tab named "Types" you have to declare two types. By example, if you want to receive one select-options that in your program that uses this class is declared like:
" P_SAKNR FOR SKAT-SAKNR".
you've got to declare two types in the class:
a- TYPES: begin of E_S_SAKNR,
                      sign(1),
                      option(2),
                      low(10),
                      high(10),
                  end of E_S_SAKNR.
b - TYPES E_T_SAKNR type standard table of E_S_SAKNR.
so, in the class method that you want to receive P_SAKNR as importing parameter. You got to do this:
method TEST importing ET_SAKNR type E_T_SAKNR.
now, in the implementation of this method you should be able to use ET_SAKNR as the same way as you usually use a parameter or a select-option. You could use it in a select with the operator IN by example..

Re : select-options in abap objects

Dear friends,
I want to give select-options in abap-objects program. How to give that.
Thanking You
with regards,
Mani

HI Mani,
It's common mix ABAP Procedural with ABAP Objects in the same program.
You should use the same way used in ABAP procedural program as Marco Cerdelli sad.
But inside ABAP OBJECTS classes you can't use is these statement type.
Don't forget to close this thread and all yours previous when your question be answered ! In case of doubt read the [rules of engagement|https://forums.sdn.sap.com/].
Best Regards.
Marcelo Ramos

Java package concept in ABAP Objects

Hi, just a question on grouping of classes in ABAP Objects.
In Java, you can group classes by "package" to avoid
namespace collision, my question, in ABAP Objects, how
do you group classes to avoid namespace collision?
I know that there is package concept in SAP/ABAP but it
is different concept in Java.
Thanks in advanced for your reply.

Hello One and Lonley,
the package concept in ABAP and Java is quite different. In java the package name is part of the development object in ABAP not. So any class pool name is global unique. In combination with the restriction on 30 chars this leads often to somehow cryptic names.
The only way to escape this somehow is the excessive use of local classes. That mean classes defined within main programs. If you are on 7.00 you may check FuGr SAPLSAUNIT_TREE_CTRL_LISTENER for this technique.
Best Regards
klaus

Poll: Development in ABAP Objects / Webdynpro vs. classical Dynpro

Hey there ABAP developers,
I just want to ask if you can give me one or two minutes of your attention for two poll questions.
At the moment I´m writing my master thesis about the development of a monitoring tool in ABAP. One of my bigger chapters is about the decision, which programming paradigm should be used for new development projects in SAP. And another important one is about WebDynpro vs. classical Dynpros.
Because of the fact, that I can´t create any polls in here, I just started this discussion and hope for many replies .
It would be very nice if some of you could give me an answer to the following questions (only 2 ), so that I can maybe use the result of this poll in my master thesis, if there are enough responses.
1. What percentage of new development projects are you developing in ABAP Objects? (Not to be considered small reports that just runs for only one time)
     A. 0 %
     B. less than 25%
     C. 25% - 49%
     D. 50% - 75%
     E. more than 75%
2. Which GUI technology do you prefer?
     A. Classical Dynpro
     B. WebDynpro
     C. Business Server Pages (BSP)
     D. others (please mention)
I want to thank you in advance for answering the questions,
Best regards,
Christoph

Hi,
Present SAP Implementation projects are very rare, maximum projects are support and up gradations only .
If they want Implement the SAP newly , defiantly they should creating ABAP Objects.
Why Because ABAP Objects are Object Oriented Concepts, so, for future reference and re usability..etc .
Now Come to the First Quetion.
if it is implementation project   ABAP Objects are 25% - 49%.
if it is Support project ABAP Objects are 25%
Now Come to the Second Quetion.
Depend upon Reqmnt, but Most of the Applications are Webdynpro . i.e 70%.
Remaining 30% All ( BSP and GUI ....Etc..)
This is my opinion.
Sambaiah.Paidipelli.

Dynamic documents in ABAP Objects (weblog)

Hi SDNers,
Do you want to implement the following features in ABAP Screens?
1. Large font sizes and more colour options than traditional ABAP/4 (There are some limitations also)
2. ICONS and pictures in different sizes
3. Texts
4. Links
5. Pushbuttons
6. Input fields
7. Dropdown list boxes
8. Tables with row span and with column span
9. Tables with frames and without frames
10. Tables with buttons, icons, pictures, input elements and texts in it.
Then please read the below weblog to incorporate these features...
<a href="/people/venkata.ramisetti/blog/2005/12/20/dynamic-documents-in-abap-objects">Dynamic Documents in ABAP Objects</a>
Thanks,
Ramakrishna

one limitation which comes to my mind immediately is that you cannot create spool output of the dynamic document.
Regards
Raja

WD ABAP: Object expected

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