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Month: December 2012

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ABAP – Screen Elements Naming Convention

It’s been a while since I put a post out about code, and since I’ve been spending a lot of time creating screens lately, I thought I’d drop a quick tidbit out there for any of you programmers out there.  Lately, I’ve been creating screens to work as a configuration screen for one of our applications.  What this means is that there are lots of screen elements, radial buttons, etc in order to make it look good.  I have a table behind the scenes to hold all the information, but like normal screen design, you don’t make a table that goes 1 to 1 with the screen, it’s too inefficient.

Why do you care about any of this? Well, by following a standard naming convention, you can make life really easy on yourself.  Let me give you an example.  I have a screen with about 100 radial buttons (30 rows, some with 2 options, some with 3, some with 4).  Well, by following a naming convention with a standard prefix, putting the field name in the same spot, and adding the occasional suffix, you can dynamically read the field name and make it work for everything you put on the screen without having to read every line.

In your PBO, you can do something like this:
LOOP AT SCREEN.
CLEAR: FIELD, VIS, I, Z_CONFIG_WA.
if screen-input = 0.
continue.
endif.
CASE SCREEN-NAME+0(3).
WHEN ‘CH_’.
FIELD = SCREEN-NAME+3(4).
READ TABLE Z_CONFIG INTO Z_CONFIG_WA WITH KEY FIELD = FIELD GRPNAM = GRP.
IF SY-SUBRC <> 0.
READ TABLE Z_CONFIG INTO Z_CONFIG_WA WITH KEY FIELD = FIELD.
ENDIF.
IF Z_CONFIG_WA-FIELD IS NOT INITIAL.
ASSIGN (SCREEN-NAME) TO <FIELD>.
CASE Z_CONFIG_WA-VISIBLE.
WHEN ‘3’.
<FIELD> = ‘X’.
WHEN ‘4’.
<FIELD> = ”.
ENDCASE.
ENDIF.
…
ENDCASE.
ENDLOOP.

Now, some of the key things to notice, one is that the loop continues if you can’t input anything.  this is purely to speed things up.  Next, by using the position, you can check for the prefix.  In this example, it’s CH_

Next, it finds the key field name to plug into the configuration table.  Next up, it checks to make sure that the table entry exists in the custom configuration table.  As long as it finds an entry, we use a field symbol to assign the value to the screen field.

The awesome part of this is that as long as you maintain a consistent naming scheme, you can set the values for multiple screens and reuse the code.

anyway, I hope this is useful for you.

If there’s anything we can do to help you out, please use the Contact Us Button above and let us know what we can do for you .

Thanks for reading,

Mike

Big Development Projects – Don’t Get Discouraged

I’ve been working on the latest piece of software for JaveLLin Solutions, and recently hit that frustrated/burned out point on it.  This piece is called Proximity, and the basics have already been designed for the transactions.  However, we are doing a major overhaul, adding some additional functionality and adding a configuration screen to give the user flexibility.  Now, I’ve been working on the redesign for the past few weeks.  Yesterday, I thought I had it wrapped up except for minor tweaks.  I handed it off to my partner (he’s done the specifications for this one), and he came back with a rather extensive list of things to add/update.  While is great, we are getting a better product, more robust solution, and just an overall system that should be easy to sell…  so how could this possibly be a problem???

The problem comes in purely from the amount of time I’ve spent, and of course, the disappoint of not being complete with something I thought was finally completed.  So, how do you avoid this letdown?  Let’s start with a few simple things you can do to get refreshed…

1.  Take some time away from this project.  While normally I recommend single tasking everything, sometimes when you’ve been working on the same initiative for weeks, you need to recharge the batteries.  Take me for example.  After I got the news, I almost picked up the keyboard again and angrily started hacking out the updates.  While this could work, my head isn’t in the game.  This would lead to not doing my best work.  So I’m taking the day off and doing some marketing stuff.  In fact, that’s why I’m blogging right now 🙂

2.  Try not to get too invested in your work.  For me, this is nearly impossible, but I’m trying really hard.  After spending weeks doing some great work and fun new enhancements, so suddenly get broadsided with a big new list of things to work on, can hit you personally.  Go back to number point 1…  and then review the changes.  Remember that this isn’t personal, it’s all about making the best product possible.

3.  Review the changes and determine what needs to happen right now, compared to what can wait.  Often things are nice to have, compared to required.  it’s important as a small shop to properly prioritize what needs to happen.  This means looking at what is currently being used by a customer (something you’ve already sold), what has “legitimate” leads for purchase (actual customer interest in the product, have looked at the product so far and decided they will purchase given some additional cleanup/functionality), then what is just something you “believe” customers will want.  Now I am very guilty of doing everything in that third bucket.  While this belief that customers will want it is important to brainstorm new ideas, the important thing is what customers REALLY want.  Of course, this becomes more challenging if you don’t have any actual customers yet.  Regardless, prioritize…  development time is a vital resource, be sure to use it wisely…

4.  Finally, find a way to re-energize yourself about the project.  Get excited about you’ve done, and how these little tweaks will make it even better.  Convince yourself, in any way that it takes, that this is the best use of your time =)

5.  Make the changes, and finish the project =)

I’m certainly open to additional methods you have any.  I’d love to hear from you.

Mike

Variant Configuration – Exploding Variant Configuration BOM Completely

Recently, I learned a new trick from my friends at Elogic, and I since I didn’t want to forget it, the easiest way is to share it with all of you 🙂  I had a request from the business to know every components, exploded all the way down to the lowest level, so they knew what materials would need to be created in the new test system.  Initially, I couldn’t think of a good way aside from looking at the planned/production orders.  Then Lawrence showed me this trick for exploding variant configuration BOM completely…

  1. Ensure that your configuration profile does not explode only configurable assemblies.
  2. Go to  transaction CAVC_TEST transaction and click on the CAVC_O_ORDER_BOM_INIT button.  Fill in the sales order and item.  Click Execute.
  3. Click on the highlighted button below, then click the Execute button.
  4. Click on the highlighted button below:
  5. Press Shift-F8 when the List screen (below) appears.
  6. Save the Component list wherever you want.

 

Well, hope you find this useful.  this is brand new transaction to me, so I’ll have to continue playing with it.

In the meantime, if you need more in depth help, press the contact us button above and let us know what we can do to help you.

thanks for reading,

Mike

 

Variant Configuration Performance Tuning

This lesson is timely because I’m dealing with this issue right now at my current client.  Their model uses class nodes in the bill of material VERY heavily, so we’ve been noticing awful performance in CU50.  SAP does provide some solutions for variant configuration performance, take a look at the following note to get some additional ideas:

Note 917987 – General performance in variant configuration

Now, we have done a few things in an attempt to improve the performance.  First, we were using class type 200 with a reference characteristic.  I learned, for class nodes this is actually a no no, unless you check a box in configuration to redundantly store the characteristic value.  Here’s what SAP’s help says about it:

Class Maintenance

Using Reference Characteristics Only

This constellation cannot access the database directly to read the assignment records. All classified objects are processed sequentially.

In order to change it, you must check that little box up top for redundant storage.  Now the drawback of this approach is twice as many table entries.  For that reason, we chose to move the characteristic to be NOT a reference cstic.  The only issue this causes is that value for material number (in our case) will not be populated automatically.  Not a huge deal.

Now, we changed all of that stuff, and still no change.  this was disappointing.  After some debugging, we (using transaction SE30 for performance tuning) we found that the issue was with table KSSK.  Surprise, Surprise, it holds the class connections.  So we handed it off to basis.  They began by running statistics on all of the tables listed in the above OSS note.  Still no help…  finally, we needed basis to reorganize the tables and indexes for KSSK & INOB.  This may sound like a lot of mumbo jumbo, but if you ask your basis person it will make sense to them =)

Short story is that sometimes you can get performance without changing your model.  Now I don’t regret the changes we did, they will still be beneficial, but don’t forget about the technical aspects.

As always, if you need further help in variant configuration, please press the contact us button above and let us know how we can help,

thanks for reading,

Mike

Variant Configuration – Delete Class Assignment

After yesterday’s post, I thought I’d throw this one in there too.  In your Development environment you may find that you need to delete class assignment of a class or another material inside of CL24N or CU42.  It could be you need a smaller class, or just accidentally linked a material that shouldn’t have been connected.  Why isn’t the issue.  You got yourself in a pickle, it’s dev, so you’re willing to live with the potential inconsistencies in order to get your model right.  After all, like we discussed yesterday, you absolutely, positively do NOT do this in production.  Then you use ECM or make a new material and replace it like any other engineering type change.  Ok… now that I have that out of the way, let’s get to the good stuff =)  You can use SE38 to put the breakpoint here straightway (it’s by far the fastest way).

Program: LCLFMF2D

Form: LOESCHEN

          if sy–subrc is initial.
call function l_check_function
exporting
cucp_var_class_type       = allkssk–klart
cucp_root_object_key      = allkssk–objek
cucp_root_object_table    = sobtab
cucp_datuv                = rmclf–datuv1
cucp_aennr                = rmclf–aennr1
exceptions
deletion_allowed          = 1
deletion_allowed_with_ecm = 2
others                    = 3.
case sy–subrc.

 

Set sy-subrc = 1

Then execute the remainder of the code (F8).  That’s all there is to it 🙂

it’s scary that it could be that easy to delete class assignment, even though SAP transactions won’t let you do it =).

If you ever need more help in VC or SM, please use the contact us button above and let us know what we can do to help.

thanks for reading,

Mike

Variant Configuration – Deleting Class with Assignments

Just recently run into a fun little challenge, and my newest VC mentor pointed me in the right direction.  (Thanks Lawrence =) ).  In the dev system, you will often create models, do some testing, and then realize you did the wrong thing (sometimes a simple change, sometimes an epic failure.  ha ha ha).  If you reach the epic failure and need to perform deleting class that is assigned to some orders or materials, you can override the system.  This the little tidbit can help you get rid of stuff in your model that should no longer be there.

DISCLAIMER.  Do not do this in production.  This is an ugly way to make this happen, so it should only be done in development.  It will likely leave sales order line items/production orders in an inconsistent state.  So please use this technique as a last resort.

Go to transaction CL6M (delete class with assignment).

enter in the data you want to delete, but before pressing execute, go to the transaction box and enter /H then hit enter.  This will drop you into debug.  As an alternative, you can place these breakpoints using SE38.

Program: RMCLKDEL
Form: CLASS_ALLOCATION

find the line:
IF NOT VERWKZ IS INITIAL.

You will need to change the variable: verwkz =to initial.

NEXT:

Find the following code in the listed form:

Form: VERWENDUNG_KLASSE_KONF

* Verwendung in Konfiguration
CALL FUNCTION ‘CUCP_CONFIGURATIONS_EXIST’                 “051516
EXPORTING  CUCP_VAR_CLASS_TYPE   = KLART     “051516
CUCP_CLASS            = KLAH-CLASS”051516
CUCP_DATE             = DATUV     “051516
EXCEPTIONS USED_IN_CONFIGURATION = 1.        “051516
IF SY-SUBRC GT 0.                                         “051516

You will need to change the variable sy-subrc to 0 or initial

* ÄNDERUNG AUF DIREKZUGRIFF AUF ANWEISUNG DURCH DIE STÜCKLISTEN  3.1H
* Grund: tote Positionen
CALL FUNCTION ‘CLEX_BOM_CHECK_USAGE_CLASS_DIR’
EXPORTING
CLASS_NAME = KLAH-CLASS
CLASS_TYPE = KLART
EXCEPTIONS
NOT_USED   = 1
OTHERS     = 2.

*… Fehlernachricht ausgeben, falls Klasse verwendet wird.
CHECK SY-SUBRC NE 1.

Finally, change the variable sy-subrc = 1.

now you can execute (F8) the remainder of the program and your class will be deleted.  If you have open sales orders you wish to continue using/testing with, you should go in change mode and visit the configuration.  You may show an inconsistency depending on the class and it’s location in the structure.  Be sure to delete any inconsistencies and validate the cstics and values you still need in the configuration.

Once again, if you need any VC help, please use the contact form above and let us know how we can help,

Thanks for reading,

Mike