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Undo in debugger layout

benjaminbutton

Although a substantial part of an ABAP programmer time is spent debugging code, most programmers I know don’t invest much in getting to know the ABAP debugger. Maybe because they spent too many years working with its previous version which was truly archaic and worthless. But the new one can do much more than you usually ask of it. And Abapinho intends to teach you how.

Today I’ll teach you just a simple key.

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Debugging with baby steps

stepsize_baby

When you debug you use F5 key to move to the next statement (or go inside a sub-routine). But imagine an IF with multiple conditions:


IF A = 1 AND B = 2 AND C = 3.
  WRITE 'I like the word glauc'.
ENDIF.

When you debug through that IF using F5 and one of the expressions is false you’ll step out of the IF without knowing which of the three was false.

But the new debugger has a new very neat functionality which can help you to better understand what happened there.

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SAP helps you translate to any language

buddha

Every once in a while I find yet another hidden SAP virtue. I just found out that there is a transaction which, for a given word in a given language, will help you translate it to another language by showing you which other translations already exist for that same word.

How cool is that? Ok, it’s not Google Translate, but it’s a nice help.

Oh, I almost forgot. The transaction is called STERM.

Thank you Sérgio Fraga for the tip.

Greetings from Abapinho.

Native SQL

watch_movement

Sometimes ABAP SQL doesn’t allow you to do something you’d be able to do using the database’s native SQL. It can still be done.


* Converte para maiúsculas e acrescenta wildcard 
  TRANSLATE l_name1 TO UPPER CASE.
  CONCATENATE l_name1 '%' INTO l_name1.

* Executa SQL nativo para fazer
* uma pesquisa "case insensitive" pelo nome 
  EXEC sql performing SAVE_ROW.
    SELECT kunnr
           INTO :l_kuune
           FROM kna1
           WHERE kna1.mandt        =    :sy-mandt
           AND   UPPER(kna1.name1) LIKE :l_name1
  ENDEXEC.

But pay attention because, unlike the generic ABAP SQL, this SQL will have to be specifically written for the existing database. As a consequence, the code will be less flexible and more complex. So make sure you use this only if you really have no alternativa.

Photo: Photodesaster via VisualHunt.com / CC BY-NC

Greetings from Abapinho.

GROUP BY in LOOPs on internal tables

loops

We’ve all sorted internal tables to use AT NEW on a LOOP.
But starting from 7.40, we can use GROUP BY on LOOPs.

The ability to group by values based on expressions or even methods is great.

The grouping is done on the first LOOP and can be processed afterwards. Try running the code below and I bet you’ll be as impressed as I was.

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Fix bug in SAP standard using an implicit enhancement

remendar

You just found a bug in a standard FORM (or FM or METHDO):


FORM EQUAL_VALUE CHANGING W_DATE TYPE SYDATUM.
  W_DATE = SY-DATUM - 1.
ENDFORM.

You report the error to SAP but you know it will take them several days, weeks or months to publish a correction. And you need it corrected right now.

You decide to act.

So you use the implicit enhancement at the start of the FORM to replace the standard code with your own (just until the correction arrives, of course):


FORM EQUAL_VALUE CHANGING W_DATE TYPE SYDATUM.
ENHANCEMENT...
* While the SAP standard says: W_DATE = SY-DATUM - 1.
  W_DATE = SY-DATUM - 2.
  EXIT. "salta fora
ENDENHANCEMENT
W_DATE = SY-DATUM - 1.
ENDFORM.

I know, it’s not elegant. But you just solved your urgent problem.

Thank you Pierre Ameye for the tip.

Thank you Sherri Lynn Wood for the photo.

Greetings from Abapinho.

Can you really do it right the first time?

cinderela

Checkpoints is a very powerful ABAP framework which almost nobody uses. Why? Probably for the same reason hardly anyone listens to Sun Ra and knows that Frank Zappa has 102 albums. Because, even though really good, it’s obscure and not commercial. Checkpoints são, indeed, really good and not commercial. But they should be more like Mozart and the Beach Boys which are both good and commercial.

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STA Ticket System improve SAP incident handling times

STA_654x885_t

Today we have a guest, Tamás Holics. He owns STA Consulting, a Hungarian company which has created 2 very interesting SAP products. In this article Tamás presents the STA Ticket System.

The problem

A lot of time is wasted in SAP software testing and maintenance processes due to incomplete or incorrect error reports from users and testers. Support people (analysts, developers) usually have to ask for more information about the error. This takes a lot of valuable working time from both the reporters of the error and support people. Solving the problem is often blocked until every information is available.

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The rot is noble after all

lateharvest

For many years I’ve been complaining about how backward ABAP development ecosystem is and how long it takes to evolve. Every time he heard me saying it a good friend of mine would wisely advise me to never bite the hand that feeds you.

But how can a man not speak out?

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Software design patterns in ABAP

burberry

We are constantly learning. But once in a while we learn something which is a leap forward forcing us to look in a new way to everything we do.

The last time this had happened was when I started using OO in ABAP. OO was not new to me as I had already used it extensively in Java, C#, C++, etc. But to finally be able to apply these precious concepts on my daily job was a relief and a big improvement in the quality, flexibility and speed of my work.

I feel now in the middle of a new leap forward. Because I’m finally learning how to use software design patterns. I’ve always heard about them but never gave them much though. For example, the ABAP site ZEVOLVING already talked about them a long time ago and I remember having read many of these articles. But somehow I still hadn’t found a text which not only explains them but also makes their advantages clear.

Now, thanks to Miguel Jorge, I have found one:: Head First Design Patterns. Besides being funny, it explains in a clear and simple way, the limitations of OO paradigms and how patterns can help overcome them.

This site has links to several interesting texts on this subject. It even has a link to a PDF version of the aforementioned book. And also to this page which lists them and even criticizes them.

From now on, whenever I’m designing software in OO I’ll always try to be aware of the available patterns and try to apply them whenever appropriate.

Thank you Miguel Jorge!

Greetings from Abapinho.

Disable value history for a single field

adam_eve

SapGUI usually keeps a history of the last values entered on each field. This is usually a good thing. But you may very well not want it to happen (in case you’re entering pornographic values in a specific field for example). You could always turn it off globally in the SapGUI settings.

But what if you just want to disable it in one particular field? Abapinho tells you how to do it.

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Add parameters to standard methods and functions

esquilo

We are all aware of SAP implicit enhancements which allow you to add code to the top or bottom of any block of standard code (methods, functions, etc). We’ve all used it to make a change to a BAPI or other standard piece of code.

But only recently did I find that you can also use these implicit enhancements to add parameters to standard methods and functions.

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ZTOAD – Editor de SQL

toad-world-logo

Toad is a very famous SQL tool which allows you to build and execute SQL queries in an easy and interactive way. And now, thanks to Mr. Sébastien HERMANN, SAP has a simplified version of this wonder tool.

I’ll let him explain.

Thank you Sérgio Fraga for spotting this.

Greetings from Abapinho.

Internal table secondary indexes

postits

This is how internal tables used to be declared:


DATA: itbl TYPE TABLE OF bkpf.

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Program the program programming

cerebro_fios

One of the few things that separates us humans from all the other animals is our ability to think about thoughts.

A sparrow may think “I’m scared, I’ll say chirp chirp chirp” and, as a direct consequence, whoever stands close to it will hear “chirp chirp chirp”.

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Use the “where used” tool in a program

Book Illustration Depicting Sherlock Holmes and Dr. Watson in a Train Cabin

The “where used” tool is very dear to any ABAP developer. Through it one can find out where a given object is used. Doesn’t look like much but we all know how important this is.

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Class CL_GUI_FRONTEND_SERVICES

nariz

Class CL_GUI_FRONTEND_SERVICES is commonly used to upload and download files from and to the user’s local computer. But it can do many more good things. For example:

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SAP can take selfies!

selfiestick

I just found out that SAP can take selfies. I still don’t see why one would need it. But that’s understandable because I never really understood the need for selfies anyway.

Here’s how SAP can take a selfie:

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Do you know the ASCII code for CR_LF and its buddies?

carriage_return

I don’t.

And I don’t want to. Why waste memory on stuff like that?

And I don’t need to because ABAP has a class just for that.

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SELECT from a set of known values

banner-minions

Someone asks you to select records based on a criteria for which you’ll have a small set of known values which you’re told will never change. Did you know you can do it directly in the SELECT?


SELECT * INTO T_T005T
FROM T005T
WHERE LAND1 = I_LAND1 AND
           SPRAS IN ( 'PT', EN' ).

I need to remind you that hard coding values in programs is not the best idea so make sure you know what you’re doing when you choose to apply this approach.

Thank you Sérgio Fraga for the tip.

Greetings from Abapinho.


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