topic Re: hi all in Application Development and Automation Discussions

hi all

Former Member — Mon, 13 Aug 2007 10:14:09 GMT

hi all

is it possible to write interective report using oops concept??

also, i would like to know where (for which type of programming) oops method i.e. class, method, and objects are used???

where oops type of coding is done???

urgent pl.

thanx

rocky

Re: hi all

marcelo_ramos1 — Mon, 13 Aug 2007 11:37:44 GMT

Hi,

Look this Wiki page:

<a href="https://wiki.sdn.sap.com/wiki/display/Snippets/ABAPObjects-CreatingyourFirstLocal+Class">ABAP Objects - Creating your First Local Class</a>

Regards.

Marcelo Ramos

Re: hi all

Former Member — Tue, 14 Aug 2007 04:18:51 GMT

Object Oriented prg

A programming technique in which solutions reflect real world objects

What are objects ?

An object is an instantiation of a class. E.g. If “Animal” is a class, A cat

can be an object of that class .

With respect to code, Object refers to a set of services ( methods /

attributes ) and can contain data

What are classes ?

A class defines the properties of an object. A class can be instantiated

as many number of times

Advantages of Object Orientated approach

Easier to understand when the system is complex

Easy to make changes

Encapsulation - Can restrict the visibility of the data ( Restrict the access to the data )

Polymorphism - Identically named methods behave differently in different classes

Inheritance - You can use an existing class to define a new class

Polymorphism and inheritance lead to code reuse

Have a look at these good links for OO ABAP-

http://www.sapgenie.com/abap/OO/

http://www.sapgenie.com/abap/OO/index.htm

http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm

http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt

http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf

http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt

http://www.allsaplinks.com/

http://www.sap-img.com/

http://www.sapgenie.com/

http://help.sap.com

http://www.sapgenie.com/abap/OO/

http://www.sapgenie.com.

http://www.sapgenie.com/abap/OO/index.htm

http://www.sapgenie.com/abap/controls/index.htm

http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf

http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf

http://www.sapgenie.com/abap/OO/index.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm

http://www.sapgenie.com/abap/OO/

Hope this helps

if it helped, you can acknowledge the same by rewarding

regards

swati

Re: hi all

GrahamRobbo — Tue, 14 Aug 2007 05:34:03 GMT

Hi Rocky,

take a look at some of the examples in transaction DWDM.

Cheers

Graham

Re: hi all

tushar_shukla — Sat, 18 Aug 2007 14:29:34 GMT

Now SAP is shifting towards object oriented paradigm.(u will find ALV is now being implemented using class based concepts)

u can create local create as well as global class .

global classes are created in CLASS BUILDER.

for local class first u need to define and and then implement the class in your report .

GLOBAL CLASSES are visible everywhere.

a class is composed of attriburts and methods.

attributes and methds are two types

instance and static(class).

static(class ) attributes are shared by all of the objects of the class.

static method can be called without instanciating the class i.e. without creating objects of class.

for calling instance methods first create instance of that class.

in ABAP objects you can not use internal tables with header line .