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Object Oriented ABAP - Local and

Global classes

SDN Community Contribution

(This is not an official SAP document.)

Disclaimer & Liability Notice

This document may discuss sample coding or other information that does not include SAP official interfaces

and therefore is not supported by SAP. Changes made based on this information are not supported and can

be overwritten during an upgrade.

SAP will not be held liable for any damages caused by using or misusing the information, code or methods

suggested in this document, and anyone using these methods does so at his/her own risk.

SAP offers no guarantees and assumes no responsibility or liability of any type with respect to the content of

this technical article or code sample, including any liability resulting from incompatibility between the content

within this document and the materials and services offered by SAP. You agree that you will not hold, or seek

to hold, SAP responsible or liable with respect to the content of this document.

Object Oriented ABAP - Local and

Global classes

Applies To:

SAP Web AS, SAP R/3 4.0 and above

Summary

The use of Object-Oriented (OO) ABAP is ever-increasing. The classical ABAP programming paradigm is

giving way to the Object Orientation. One important aspect of Object-Oriented ABAP is the portability. This

two-part document explains how the Classes and their components can be imported and exported in ABAP.

This also lists the limitations of the tool provided by SAP.

This document, Part I, explains how the Local Classes are imported into the Global Classes visible in the

ABAP Class Builder (Transaction SE24). It gives the details of the relationships between the local and global

class components, and the limitations of the import step. Part II will explain the other way around, that is,

exporting the Global Classes into the Local Classes.

By: Bhanumurthy Thirumala

Company: Intelligroup, Inc.

Date: 05 January 2006

Table of Contents

Applies To:........................................................................................................................................2

Summary ..........................................................................................................................................2

Table of Contents.............................................................................................................................2

Introduction.......................................................................................................................................5

Requirements: ..................................................................................................................................5

The Local Class................................................................................................................................5

The IMPORT Step............................................................................................................................5

Import results and Limitations ..........................................................................................................7

Class Properties in ‘Properties’ Tab .............................................................................................7

Description ................................................................................................................................8

Instantiation...............................................................................................................................8

Final / Super Class....................................................................................................................8

Modeled only.............................................................................................................................8

Object Oriented ABAP - Local and

Global classes

Message Class..........................................................................................................................8

Program Status .........................................................................................................................8

Category....................................................................................................................................8

Type Groups / Objects ..............................................................................................................9

Inheritance – example (Z_LOCAL_CLASS1) ...........................................................................9

‘Interfaces’ Tab .............................................................................................................................9

Abstract...................................................................................................................................10

Final.........................................................................................................................................10

‘Friends’ Tab ...............................................................................................................................10

‘Attributes’ Tab............................................................................................................................10

Level........................................................................................................................................11

Visibility ...................................................................................................................................11

Modeled...................................................................................................................................11

Typing......................................................................................................................................11

Associated Type......................................................................................................................11

Description ..............................................................................................................................12

Initial value ..............................................................................................................................12

‘Methods’ Tab .............................................................................................................................12

Level........................................................................................................................................12

Visibility ...................................................................................................................................12

Modeled...................................................................................................................................13

Description ..............................................................................................................................13

Method properties accessed from the ‘Details’ Icon:..............................................................13

Abstract...................................................................................................................................13

Final.........................................................................................................................................13

Event Handler .........................................................................................................................13

Editor Lock ..............................................................................................................................14

‘Events’ Tab ................................................................................................................................14

Object Oriented ABAP - Local and

Global classes

Type ........................................................................................................................................14

Visibility ...................................................................................................................................14

Modeled...................................................................................................................................14

Description ..............................................................................................................................14

‘Internal Types’ Tab ....................................................................................................................14

Visibility ...................................................................................................................................15

Modeled...................................................................................................................................15

Typing......................................................................................................................................15

Associated Type......................................................................................................................15

Description ..............................................................................................................................15

Aliases ........................................................................................................................................16

Alias Name..............................................................................................................................16

Visibility ...................................................................................................................................16

Other Class properties affected..................................................................................................16

Conclusion:.....................................................................................................................................16

Code of the sample Local Class.....................................................................................................16

Author Bio.......................................................................................................................................19

剩余18页未读，继续阅读

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yangbing654321

2012-10-31

书本描述详细，通俗易懂，好书。
keyuming

2015-04-30

非常好的资源，可以根据讲解一步一步的创建类

jackzheng33

粉丝: 3
资源: 8

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