topic Re: Difference between ABAP & OOABAP in Application Development and Automation Discussions

Difference between ABAP & OOABAP

Former Member — Sat, 28 Jul 2007 04:00:24 GMT

Hi ,

What is the exact difference between ABAP and ABAP Objects?

Re: Difference between ABAP & OOABAP

alejandro_bindi — Sat, 28 Jul 2007 04:07:55 GMT

OO ABAP (ABAP Objects) is a superset of normal ABAP.

ABAP Objects supports most normal ABAP statements (it's almost downward compatible) and also ads all object orientation language elements, providing for example class definitions, object instantiation, inheritance.

What ABAP objects doesn't support is obsolete ABAP elements like using internal table header lines.

Check <a href="http://www.intelligententerprise.com/channels/applications/feature/archive/heymann.jhtml;jsessionid=N1ZZC0RLNUPO2QSNDLRSKH0CJUNN2JVN?_requestid=1607699">this link</a> for further info.

Please reward points if this helps.

Re: Difference between ABAP & OOABAP

uwe_schieferstein — Mon, 30 Jul 2007 04:05:42 GMT

Hello

In the following Wiki posting

<a href="https://wiki.sdn.sap.com/wiki/display/profile/2007/07/09/UnderstandingABAPObjects">Understanding ABAP Objects</a>

I give an example of the difference between classical programming and ABAP-OO.

The example shows the principal difference between the two approaches. However, it also demonstrates that it is quite important to gather object-oriented programming skills as soon as possible. Why?

Assuming your company (or customers) use(s) RE-Classic for facility management you may feel quite comfortable with your classical programming skills. Yet if your company switches to RE-FX (Flexible Facility Management) you are definitely lost having only your classical programming skills as the Wiki example clearly shows.

Regards

Uwe

Re: Difference between ABAP & OOABAP

Former Member — Mon, 30 Jul 2007 04:25:22 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

dinesh

Re: Difference between ABAP & OOABAP

marcelo_ramos1 — Sat, 04 Aug 2007 02:25:07 GMT

Hi,

Look at:

<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1591ec90-0201-0010-3ba8-cdcd500b17cf">ABAP Code Sample for Objects</a>

<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/2503f09c-0801-0010-dc89-80bab376e4b8">Object Oriented ABAP - Local and Global classes</a>

<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/b6cae890-0201-0010-ef8b-f970a9c41d47">ABAP Code Sample to Learn Basic Concept of Object-Oriented Programming</a>

<a href="https://sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/37c5db90-0201-0010-3a9b-d0a5288f3c15">Eight Reasons Why Every ABAP Developer Should Give ABAP Objects a Second Look</a>

<a href="https://sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/3e59b790-0201-0010-88aa-bc8a7f95f6fb">Why use ABAP Objects</a>

<a href="https://media.sdn.sap.com/public/eclasses/teched04/ABAP151_files/Default.htm#nopreload=1">ABAP Objects for Java Developers</a>

Regards.

Marcelo Ramos