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Copyright 2006 Deloitte Development LLC. All rights reserved.

BADIs

U V S Varma


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Lesson Objectives

After completing this lesson you will be able to :

Understand what Business Add Ins (BAdIs) are

Define BAdIs

Implement BAdIs

Use BAdIs

Create an implementation for an existing SAP BAdI

Create Multiple Use BAdIs

Create Filter Dependent BAdI

Create Menu Enhancement with BAdI


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Introduction

Traditional way of doing code modifications Exits

3 Tier Architecture

PRESENTATION :

Function Exits

Screen Exits

Menu Exits

APPLICATION:

Programs -> Program exits -> call customer function -> Include

DATABASE

Table -> SE11 -> Goto -> Append Structure

With BAdIs you can make changes only at the ApplicationLayer.


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BAdIs

Business Add-Ins are a new SAP enhancement technique based onABAP Objects

They can be inserted into the SAP system based on specific userrequirements

Business Add-Ins should be considered generalized Business

Transaction Events that can be used to bundle program, menu andscreen enhancements into a single add-in.

Each Business Add-In has :

at least one Business Add-In definition

a Business Add-In interfacea Business Add-In class that implements the

interface


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BAdI Enhancement options

In Business Add-Ins, all the components of an enhancementoption are grouped together

Program Enhancements: Functional enhancement of theprogram are defined in the form of interface methods and

can be used with or without Menu Enhancements orScreen Enhancements

Menu Enhancements: Function codes can be entered for aBAdI for the corresponding menu entries in the userinterface definition.

Screen Enhancements: Subscreen areas can be enteredfor a Business Add-In. Screen enhancements can beimplemented for these in the form of subscreen screens.


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BAdIs SAP Delivered vs. CustomDeveloped SAP has already created BAdI definitions (created with SE18)

and placed references to these throughout the application code.

SAP developers create implementations(created with SE19) ofthese existing BAdIs, entering custom code into the implementedmethods

It is also possible for developers to create new BAdI definitions,and reference them in their own custom code. You would do thisif you wanted to give future users of your application the ability toexpand on functionality in a custom development. You would NOTdefine a new BAdI to place in SAP code!

Overview of steps to complete a BAdI.

1. Create BAdI definition with SE18 2. Code a reference to the BAdI in application code where

functionality is to be expanded

3. Create an implementation of the BAdI that actually doessomething.


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Defining BAdIs

Enter BADI name

Click on CREATE

SE18


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Defining BAdIs Attributes

Enter short text

BADI class is automatically created


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BADI Definition - Save

Enter Package name


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Defining BAdIs

Package name populated

BAdI class created


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Defining BAdIs - Interface

BADI Interface is

created automaticallyTo edit double click

on the interface


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Defining BAdIs Interfacemethods

Method name

Method type


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Defining BAdIs Interfacemethods - parameters

Import and

Export parameters


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Defining BAdIs Exceptions

Exceptions


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BADI Implementation

SE19

Enter Implementation name

Click on create

Enter the BAdIDefinition name


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BAdI Implementation

Double click on

the method to modify

method code


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Implementing BAdIs: Methodimplementation

Modify the methodcode within the

METHOD/ENDMETHOD

statements and activate


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Using a BAdI


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Create an Implementation for anSAP provided BAdI

Find the corresponding BAdI for the SAPtransaction

Create a custom Implementation for the BAdI

From the methods available in the BAdI and selectthe appropriate method

Enter custom code in the method and activate

Execute SAP transaction and test if method with

custom code is being invoked


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Finding a BAdI Transaction VD02

Select System->S

from the drop dow


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Finding a BAdI Transaction VD02

Double click on the

program name


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Finding a BAdI Source program

Do a search on

CL_EXITHAND

GET_INSTANC


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Finding a BAdI Search results

Three BAdIs usein this program.

Double click requ

BAdI to see the

source code


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Finding a BAdI Call to a BAdI inthe source code

BAdI being used

Interface referencVariable for the BA


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Finding a BAdI Interfacereference to the BAdI

Interface refere

Variable defined


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Using an SAP BAdI Create aCustom Implementation

Enter the name

of the BAdI

SE19

Enter the

implementation

name

Click on CREAT


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BAdI Implementation Attributes

Enter description


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BAdI Implementation Interfacemethods

Click on the inter

tab to view the a

methods

Double click on m

SAVE_DATA to m


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BAdI Implementation Classbuilder

Enter custom code


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BAdIs Execute the Changecustomer transaction

Change name of Cust

Click on SAVE button

VD02


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BAdI Implementation Invokedby VD02

Custom code for method

invoked via BAdI

CUSTOMER_ADD_DATA


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Multiple Use BAdIs

Single Use Business Add-Ins

Do NOT select the Multiple usecheckbox from the Administrationtab when defining a Single Use BAdI

BAdI has a single Implementation

Similar to procedures

Return values can be expected Can use importing, changing and

returning parameters

N/A

A single implementation will betriggered by the applicationprogram

Multiple Use Business Add-Ins

Select the Multiple use checkboxfrom the Administration tab whencreating the BAdI definition

BAdI has multiple implementations

Similar to event calls

Cannot expect return values Can use importing and changing

parameters

For multiple implementations thereis no sequence control because atthe time of BAdI definition it doesnot know which implementation will

be active All active implementations will be

triggered by the applicationprogram using the BAdI


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Multi Use BAdIs CUSTOMER_ADD_DATA Definition

Multiple use

Button checked

SAP defined BAdI

CUSTOMER_ADD_DATA


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Multi Use BAdIs CustomImplementation for BAdI

CUSTOMER_ADD_DATA

Create a second implement

for BAdI CUSTOMER_ADD

Specify BAdI name

Click on CREATE


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Multi Use BAdIs Interfacemethod SAVE_DATA

Double click on metho

SAVE_DATA


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Multi Use BAdIs Modify methodSAVE_DATA

Enter custom code formethod SAVE_DATA


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Multi Use BAdIs Viewimplementations for BAdI

SE18

Displays list of

Implementation

Select to display li

Implementations f

CUSTOMER_AD


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Filter Dependent BAdIs

Business Add-Ins can be implementedbased on a specific filter value

If you want to call the implementation of a

Business Add-In depending not only onone filter value but on various values, youcan enter the name of a structure into theFilter type field. The structure can consist

of several data elements that fulfill theabove conditions for data elements


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Filter Dependent BAdIs BAdIDefinition

SE18

Click checkbox for

Filter Dependent BAdIs

Enter Filter type


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Filter Dependent BAdIs BAdIDefinition

Double click on

the Interface toadd parameters

and methods

Enter text


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Filter Dependent BAdIs Interface- Method Definition


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Filter Dependent BAdIs Interface Parameter Definition

_VAL parameter

reset for method

eate parameter to

export tax rate


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Filter Dependent BAdIs Implementation

Create BAdI Impleme

Enter name of BAdI

Select CREATE butto


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Filter Dependent BAdIs BAdIImplementation

SE19

Select a value from

the search help or

enter a valid value

Click on button to

create an entryfor filter value


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Filter Dependent BAdIs BAdIImplementation

Double click on

the Method to

enter source code

Select the

Interface tab


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Filter Dependent BAdIs Methodcode

Enter code for the

Method to calculatethe tax rate based on

the company code in

Parameter FLT_VAL

Save and activate


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Filter Dependent BAdIs Sourcecode to Invoke BAdI

Call BADI from

within the program

Selection screen

parameter forCompany code

Call methodget_bukrs passing

the company code

The Tax rate is

returned


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Menu Enhancement BAdIs Creating a menu enhancement

Fcodes tab is only

available when

multiple use box is

not checked

SE18 Create

BADI definition

Menuenhancements

are for Single

Use BAdIs

only


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Menu Enhancement BAdIs Definition via SE18 FCode Tab

Enter related

program andfunction code

information.

Double clicking on

the new line will

take you to dialog

for defining an iconand function texts


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Menu Enhancement BAdIs Function Code Attributes

Function texts

screen shows allcodes for

associated

programFunction attributes

popup allows

definition of code

type and static

texts


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Menu Enhancement BAdIs Define the Interface (SE18)

Add method

to interfacethat will be

implemented

by the menu

exit

h d


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Menu Enhancement BAdIs Implement BAdI in SE19

Double click

on method toadd in

custom code

for the

implementati

on

Dont forget to activate during all steps in this

process!

h d


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Menu Enhancement BAdIs EnterFcode in GUI status

Dont forget to activate during all steps in this

process!

M E h BAdI C ll


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Menu Enhancement BAdIs Callthe BADI in Application

Dont forget to create a reference to the BADI instance in GLOBAL memory of the

application as follows:

DATA o_exit TYPE REF TO zif_ex__menu_exit_badi_1. "BADI interface

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