Case Study: OOABAP-Global Class.

Business Requirement:

To create a global class and display the customer details using global class.

To have a very simple scenario on this, Lets enter customer numbers on selection screen.

Based on the input ,The customer details will be displayed.

Solution:

Go to se24 Tcode

Provide the global class name as ZCL_GLOBAL_CLASS.

Click on the Create Button.

Provide the Description.

Press Save button .Then we can view the scree like this

Provide method name as GET_DATA.

Goto Attributes and provide the values.

In Above screen ZSTR_KNA1 is structure

and ZTT_KNA1 is table type.

Go to methods tab and double click on the method GET_DATA and provide the bellow logic.

method GET_DATA .

SELECT KUNNR

LAND1

NAME1

ORT01

FROM KNA1 INTO TABLE IT_KNA1

WHERE KUNNR BETWEEN S_KUNNR_LOW AND S_KUNNR_HIGH.

endmethod.

Save Check and Activate .

Provide another method as DISPLAY_DATA.

Double click on the DISPLAY_DATA and provide the bellow logic.

method DISPLAY_DATA .

LOOP AT IT_KNA1 INTO WA_KNA1.

WRITE:/ WA_KNA1-KUNNR,

WA_KNA1-LAND1,

WA_KNA1-NAME1,

WA_KNA1-ORT01.

ENDLOOP.

endmethod.

Save Check and Activate .

Go to SE38 and create program with name ZGLOBAL_CLASS.

Provide the description.

Provide the bellow logic.

DATA:KNA1 TYPE KNA1.

*Select Options

SELECT-OPTIONS:S_KUNNR FOR KNA1-KUNNR.

*Declaration of object reference variable

DATA:OBJ TYPE REF TO ZCL_GLOBAL_CLASS.

START-OF-SELECTION.

*Create Object

CREATE OBJECT OBJ.

*Provide attribute values

OBJ->S_KUNNR_LOW = S_KUNNR-LOW.

OBJ->S_KUNNR_HIGH = S_KUNNR-HIGH.

*Calling the method to get data.

CALL METHOD OBJ->GET_DATA.

*Calling the method to display data.

CALL METHOD OBJ->DISPLAY_DATA.

Save Check and Activate .

Execute the program.

Provide the customer numbers in selection screen.

Execute it.

Output:

Author: NageswarPage 1101/30/2011