topic abap objects in Application Development and Automation Discussions

abap objects

Former Member — Thu, 16 Aug 2007 10:58:40 GMT

what is the advantage of deffered when defining class?

Re: abap objects

Former Member — Thu, 16 Aug 2007 11:25:57 GMT

It can be useful in making the friendhip with other classes.

using the friendhip u can access even the private components oi that class.

reward points if it is useful.

Regards,

Satish.

Re: abap objects

former_member480923 — Thu, 16 Aug 2007 11:39:59 GMT

Hi,

The Statement

class: lcl_locl type ref to lcl_local_class  DEFINITION DEFERRED.

In general, you define and use a class within the same context. A context is the common environment of a set of classes and interfaces, for example, the set of local classes in a program. However, you may need to refer to a class using the REF TO addition before it has been defined (for example, if two classes refer to each other). In this case, you can declare the class before you define it using the variant CLASS class DEFINITION DEFERRED.

Hope that Helps

Anirban M.

Re: abap objects

suredarreddy_pulimamidi — Thu, 16 Aug 2007 12:32:03 GMT

use of differed is you can use the class before you implemeted

Re: abap objects

Former Member — Thu, 16 Aug 2007 13:04:24 GMT

Actually it's simple.

In Plain English

If you code say this at the start of your program

CLASS LCL_HANDLE_EVENTS DEFINITION DEFERRED.

You can then in your DATA section code this before you have defined or loaded the CLASS LCL_HANDLE_EVENTS .

DATA: GR_EVENTS TYPE REF TO LCL_HANDLE_EVENTS,

Normally if the class hasn't yet been defined or loaded this statement would give you a syntax error.

You often need these type of variables referring to a class that you haven't defined or loaded yet.

Cheers

jimbo

Re: abap objects

marcelo_ramos1 — Thu, 16 Aug 2007 13:59:12 GMT

Hi,

Look at this links:

<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://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://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>

For more informations look at:

<a href="http://https://wiki.sdn.sap.com/wiki/display/ABAP/ABAPObjectsGetting+Started">ABAP Objects Getting Started</a>

<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/b6cae890-0201-0010-ef8b-f970a9c41d47">ABAP Code Sample to Learn Basic Concept of Object-Oriented Programming</a>

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

<a href="https://wiki.sdn.sap.com/wiki/display/ABAP/ABAP+Objects">ABAP Objects</a>

Regards.

Marcelo Ramos