Dialog Programming Tutorial: Module Pool in SAP ABAP - Shikshaglobe

Content Creator: Preet.Sharma

SAP-ABAP upholds two sorts of projects - Report Program and Dialog Program.

On the off chance that your ABAP program requests client input , Dialog writing computer programs is utilized.

In this instructional exercise you will learn:

A client exchange is any type of connection between the client and the program and could be any of the accompanying

Entering information

Picking a menu thing

Clicking a button

Clicking or double tapping a passage

Discourse program is additionally utilized when we really want to explore this way and that between screens

Exchange programs are made with type as 'M' - Module Pool. They can't be executed autonomously and should be appended to something like one exchange code in which you determine an underlying screen.

Distinction among Report and Dialog Programs

Report Program:

A report is a program that commonly peruses and dissects information in data set tables without changing the data set.

Discourse Program:

A discourse program permits you to work intuitively with the framework and to change the items in the data set tables. Every exchange program has a specific succession of screens that are handled by the framework consistently.

A Sample exchange handling in Dialog Programming

Parts of Dialog Program

Dissimilar to report which by and large involves the formation of one independent program which can be executed autonomously of different articles, discourse program advancement involves improvement of numerous articles none of which can be executed all alone. Rather all items are connected progressively to the principal program and are executed in a grouping directed by the Dialog Main Program.

The parts of a discourse program are:

The exchange code begins a screen succession.

You make exchange codes in the Repository Browser in the ABAP Workbench or utilizing Transaction SE93.

An exchange code is connected to an ABAP program and an underlying screen.

You can begin a screen grouping from any ABAP program utilizing the CALL SCREEN explanation.

Screens

Every exchange in a SAP framework is constrained by at least one screens.

You make screens involving the Screen Painter in the ABAP Workbench through exchange SE51

Each screen has a place with an ABAP program.

These screens comprise of a "screen cover" or "design" and its stream rationale. The screen has a design that decides the places of information/yield fields and other graphical components, for example, checkboxes and radio buttons. A stream rationale decides the consistent handling inside screen.

GUI status

Each screen has a GUI status(es) which are free parts of a program.

This controls the menu bars, standard toolbar, application toolbar , with which the client can pick capabilities in the application.

You make them in the ABAP Workbench utilizing the Menu Painter.

ABAP Program

Each screen and GUI status in the R/3 System has a place with one ABAP program.

The ABAP program contains the discourse modules that are called by the screen stream rationale, and furthermore process the client input from the GUI status.

ABAP programs that utilization screens are otherwise called discourse programs.In a module pool (type M program); the principal handling block to be called is consistently a discourse module. Nonetheless, you can likewise utilize separates other ABAP programs, like executable projects or capability modules. The principal handling block is then called in an unexpected way; for instance, by the runtime climate or a strategy call. The screen succession is then begun utilizing the CALL SCREEN articulation.

Screen Flow Logic

Screen Flow rationale is principally separated into four parts.

Process Before Output (PBO) occasion: which is handled before the screen is shown

Process After Input (PAI) occasion: which is handled after a client activity on the screen

Process on help demand (POH): which is handled when F1 is squeezed

Process on esteem demand (POV):which is handled when F4 is squeezed

Dynpro

A screen along with its Flow rationale is known as a Dynpro ("Dynamic Program" since the screen stream rationale impacts the program stream)Each dynpro controls precisely one stage of your Dialog Program.The screens having a place with a program are numbered. The screen stream grouping can be either direct or cyclic. From inside a screen chain, you might in fact call another screen chain and, subsequent to handling it, return to the first chain. You can likewise abrogate the statically-characterized next screen from inside the exchange modules of the ABAP program.

ABAP Module Pool

On a PBO or PAI occasion a Dynpro calls an ABAP discourse program. Assortment of such projects is known as the ABAP module pool.For instance modules called at the PAI occasion are utilized to check the client input and to set off fitting exchange stages, for example, the update task.All dynpros to be called from inside one exchange allude to a typical module pool.

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