Chapter 02_Enhancement Framework

8/10/2019 Chapter 02_Enhancement Framework

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IBM Global Business Services

IBM Corporation 2013July 2009

SAP Enhancement Framework A Great Way ofEnhancing the SAP Code


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IBM Corporation 20132 Enhancement Framework July 2009

Learning Objectives

Understand the fundamental idea of the Enhancement Framework and SwitchFramework (available in SAP NetWeaver 2004s)

Reduce TCO by using enhancement technologies instead of modifications

Enhance SAP standard objects and understand how Enhancement definitionsare created


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Enhancement Framework in SAP NetWeaver


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Adapting SAP

One of the advantages of SAP software is the possibility to adapt the software of own requirements and

the possibility of keeping the adaptations during upgrade.

Ways of adaptations:

1. CustomizingConfigurations done in SAP (T Code SPRO)

2. EnhancementAdditional Customer Requirements typical for a client and which is not available

in Standard SAP

3. ModificationsChanging the Standard SAP Code to enhance the code to add new

functionalities.


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Modification vs. Enhancement - Motivation

Disadvantages of Modifications No support for multiple users or projects

No support for parallel developments

Will appear much more often in adjustment tools

Higher adjustment effort (during upgrade & SP import)

Advantage of Enhancements

Enhancing objects instead of modifying them reduces the effort of adjustment

during Service Pack import or upgrade.

In ECC 6.0 Enhancement Functionality becomes more flexible and easier. ECC

6.0 introduces a new facility on enhancement called Enhancement Point.


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Evolution of SAP Enhancement Technology


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Source Code Plug-in

Implicit

Enhancement

Explicit

Enhancement

Source Code Plug-in


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Implicit Enhancement vs. Explicit Enhancement

Implicit Enhancement Option

At common enhancement places, implicit Enhancement options are

available.

Examples:

End of Executable Program, Include, Function group, Dialog module

Begin/End of Form routine / Function module / Method

End of a structure

End of Private/Protected/Public Section of a local class

Explicit Enhancement Option

Predefined enhancement options can be defined in source code.

They are additionally stored inside Enhancement Spots.


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Enhancement - Relations


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IBM Corporation 2013July 2009

Implicit Enhancements


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Step 1 - Activate the enhancement functionality

Using SE80 open the program/include you want to enhance and click on the enhancement button or

press or go to Program > Enhance


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Step 2 - Enhancement functionality activated

The SE80 screen will now look something like below. Menu add new buttons for Enhancement.


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Step 3 - Show implicit enhancement points

Go to menu Edit->Enhancement Operations->Show Implicit Enhancement Optionsto display implicit

enhancement points within the ABAP code


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Step 4 - Enhancement points with the code

Once you have done this, you will be able to see all the implicit enhancement points available within your

code, these are denoted by the line of quotation marksand the black arrow at the start.


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Step 5 - Create an implicit enhancement point

In order to implement an implicit enhancement point simply right click on the required enhancement point

and select Enhancement Implementation> create.


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Step 6 - Enhancement point type

Next click on the Codebutton to create a code implementation.


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Step 7 - Name and description

Next give the enhancement point a name and description. Click the green tick.


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Step 8Package information

Once you click the green button, it will ask for Package. Enter the package name and click to Save button.


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Step 9 - Change request

Next assign the Transport number.


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IBM Gl b l B i S i


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Summary

Implicit Enhancement is present in SAP standard program mostly in belowmentioned places.

End of Executable Program, Include, Function group, Dialog module

Begin/End of Form routine / Function module / Method

End of a structure End of Private/Protected/Public Section of a local class

IBM Gl b l B i S i


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Enhancement Spot

Implementation of Enhancement

IBM Gl b l B i S i


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Enhancement Spots

The enhancement spots are used to manage explicit enhancement options.Enhancement spots carry information about the positions at which enhancement

options were created.

One enhancement spot can manage several enhancement options of a

Repository object.

Conversely, several enhancement spots can be assigned to one enhancementoption.



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How to Find an Enhancement Spot


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Double click to display the enhancement object

The Enh Spot by the name ES_LV61A501 is present.



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Create Enhancement

Click on Enhance Icon (Spiral)

Click on the Ehnancement Spot ES_SAPLEINK and in Enhancement

Implementation Click on Create



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Create Enhancement (Cont.)



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Create Enhancement Implementation



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Enhancement is created in SAP



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Code Logic

Write your code, save and activate. An active version of the Enhancement iscreated



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Exercise

Create an Explicit Enhancement Spot Implementation Save and activate

Check if the Enhancement is created or not



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Function Group Enhancement - Technology

Function Group Enhancements allows adding new optional parameters to existingfunction modules

Transaction SE37



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Create Enhancement

Go to SE37 and select a Function Module Click on the Function Module Menu

Click on Enhance Interface



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Create Implementation and Add New Parameter

Create Enhancement Pop Up box comes, click on Create Icon



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Run Function Module and check new parameter

Save and Activate Test the changes



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Exercise

Go To SE37 Enhance a Function Module Interface

Save and activate

Execute to Test



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Class/Interface Enhancements

Class/Interface Enhancements allow addition of: optional parameters to existing methods

methods

events and event handlers

references to interfaces

Exits to existing methods Pre-ExitCalled at the beginning of a method

Post-ExitCalled at the End of a method

Overwrite-ExitReplaces the original method



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Add new method and parameters



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Kernel BAdi Technology

What are BAdIs? Business Add-Ins

is an anticipated point of extensionthese points act like

sockets and exist in the original coding

has a well-defined interface in contrast to source code plug-ins

and is therefore more stable to changes in the original codingKernel BAdIs - New Features

Are integrated directly in the ABAP Language/Runtime

Improved filter support allows non-character filter types

(packed, numeric, string) and complex filter conditions

Enable reusable implementation instances (Stateful BAdI) Control of the lifetime of implementations (BAdI-context)

Allow for inheritance of implementations

Can be switched by the Switch Framework



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Comparison: Usage of Old BAdIs vs. new BAdIs

Classic and new BAdIs differ in a number of features that are important formigration:

BAdI object

With classic BAdIs, a BAdI object is created by calling a factory method, and

referenced via a reference variable of the type of the BAdI interface.

With new BAdIs, a BAdI object is created via the ABAP statement GET BADIas ahandle for the calls of BAdI methods, and referenced via a reference variable of

the type of the BAdI. A BAdI object is an instance of an internal BAdI class, which

otherwise is invisible to the outside.



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Passing comparison values for the filter

With the classical BAdIs, the filter values are stored in a structure and passedwith the call of the BAdI methods.

With the new BAdIs, the comparison values for the filters used to search for

implementations are passed when the BAdI object is created with the GET BADI

statement.



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Calling BADI Methods

Passing comparison values for the filterA classic BAdI can be called only once and the call positions are registered

centrally.

With new BAdIs, multiple calls are possible and the call positions are not

registered centrally.

For the above reasons, an automatic call migration is not possible.



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Transaction SE18

Go to SE18 There are two options available in the BAdi Builder

Enhancement Spot

BAdi Name

Give a BAdi name and click the button Display



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BADI Definition

Display the BAdi Check the Enhancement

spot to which the BAdi

is migrated



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Create a BAdi Enhancement

Give the BAdi Name and from the menu select Enhancement Implementation Create



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Implementation



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Save and Activate the BAdi



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Sample Code in method PROCESS_ITEM


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Check Enhancement via SE18

Go Back to SE18 and give the BAdi Name in the Enhancement Spot RadioButton

Click Display Button

Expand the BAdi Definition, you can see the implemented Enhancement



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Exercise

Create a BADI Enhancement Implementation in SE18 Create a method

Activate the Implementation

Check it in SE18

Reconfirm the Implementation in Enhancement Spot Display in SE18



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Custom BAdi Migration

Automatic migration from BAdI Builder (SE18)

SE18Utilities Migrate Classical BAdi (Cntrl+F3)

Specify Enhancement Spot for BAdI Definition

Specify Enhancement Implementation for BAdI Implementation

Benefits

No special knowledge necessary

Effort: approximately 5 minutes per BAdI.



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Overview



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Switch Framework

Goal of Switch Framework: Control visibility of repository objects at runtime through

switches

The Switch Framework can be used to

Switch on industry solutions / Enterprise Add-ons

Develop new functions without affecting existing ones

Enhance delivered systems at partner and customer site in the

context of the enhancement framework with own functions


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Switchable Objects

By package assignment Appends, SI-, CI-includes for structures in DDIC

Fixed value appends to domains

Secondary Indexes

Append Search Helps

Enhancement Implementations

Switch Business Configuration Sets ( Switch BC-Sets)



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Switchable Objects

By direct assignment Screen elements & Flow logic

Menu entries & functions

IMG nodes

Customizing



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SFW1



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SFW2



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SFW3



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SFW5

Industry Solutions Tcode -SFW5

Select a function and activate it



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Switch Framework: Architecture



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Links

Please visit the following web links for more detailshttp://help.sap.com

http://sdn.sap.com
http://help.sap.com/http://sdn.sap.com/http://sdn.sap.com/http://help.sap.com/

Chapter 02_Enhancement Framework

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