Analyzing Classical Report Events in SAP ABAP: Understanding their Impact and Best Practices

Events in Classical Report in SAP ABAP: Initialization (INIT):

– Initialization (INIT):

– At Selection-Screen (AT SELECTION-SCREEN):

– At Selection-Screen (AT SELECTION-SCREEN):

– Start-of-Selection (START-OF-SELECTION):

– Start-of-Selection (START-OF-SELECTION):

– Top-of-Page (TOP-OF-PAGE):

– Top-of-Page (TOP-OF-PAGE): More items

– •

Classical Reporting Events in SAP ABAP

The initial event in ABAP report is activated first, enabling users to set and preserve default values on the selection-screen.

2) AT SELECTION-SCREEN

This event is effective when a selection-screen has been included in your program. It activates as soon as the selection-screen appears and is utilized to validate the predefined values on the screen.

Understanding the Classic Report Functionality in SAP

A classic report is a type of program that creates a single list. This list must include all the necessary detailed information. When using this method, it is possible to end up with long lists from which the user needs to manually select the relevant data. This can be time-consuming and overwhelming for users who have to sift through extensive amounts of information.

In some cases, generating extensive lists may be unavoidable when using classic reports. For background processing tasks where automation is required without any user interaction or input, this method becomes essential. Background processing refers to tasks that run in the background without interrupting or requiring direct involvement from users.

For instance, imagine an inventory management system in a retail store where stock levels are automatically updated every night based on sales made during the day. A classic report program could generate a complete list of all products sold throughout the day along with their corresponding quantities and prices. This automated process ensures accurate inventory tracking without relying on manual updates by store employees.

– Classic reports generate single lists containing all required detail information.

– Users may need to manually search through these lengthy lists for relevant data.

– Classic reports are suitable for background processing tasks where automation is necessary.

– Consider modern reporting tools with filtering options and interactive features when dealing with large datasets or prioritizing user convenience.

3) START-OF-SELECTION

The classical report event is automatically present in every ABAP program by default. However, if you have utilized INITIALIZATION and AT SELECTION-SCREEN events in your program, you will need to declare this event manually. It plays a crucial role in extracting data from the database, making it an essential event for programming purposes.

Difference between classical report and interactive report in ABAP

In Classical reports, all the information is presented in a single list. Interactive reports provide summarized information in the basic list and detailed information in the next list. ALV reports are utilized to display output with pre-defined functionalities.

4) END-OF-SELECTION

This event is activated once the data extraction process is completed and subsequently, when the initial entry in the output list is shown.

What is the standard event for report programming in SAP?

In SAP ABAP, the REPORT statement is used to define a program. It tells the system that this is the start of a new report and it should execute certain events or sections of code. One important event that is always executed implicitly (automatically) when using the REPORT statement is called START-OF-SELECTION.

ABAP programs are designed to be event-driven, meaning they respond to specific triggers or events. These events can be user actions, system messages, or predefined events like START-OF-SELECTION. When an event occurs, the corresponding section of code associated with that event will be executed.

However, if no specific events are written in the program, everything falls under the default event called START-OF-SELECTION. This means that any code written after the REPORT statement will automatically be executed when running the program.

5) TOP-OF-PAGE

To understand more about classical report let’s take a requirement and display the output.

NEED: Show the LIFNR, NAME1, ORT01, and PSTLZ fields from the LFA1 table.

In SAP ABAP, each program begins with the REPORT keyword. In this case, YCLASSICAL_LFA1 is the designated name for the program.

Specify the table or tables you desire to include in the program.

The Select-Options statement is utilized to specify a range, with L_LIFNR serving as the variable responsible for storing this range.

SELECTION-SCREEN: START OF BLOCK B1 WITH FRAME TITLE TEXT-000. SELECT-OPTIONS: L_LIFNR FOR LFA1-LIFNR. SELECTION-SCREEN: END OF BLOCK B1..

Generating a structure named TY_STR for the LFA1 table.

Define a structure called TY_STR, which consists of fields such as LIFNR for vendor number, NAME1 for vendor name, ORT01 for city name, and PSTLZ for postal code.

Creating Internal Table with name “IT” and Work Area with “WA”.

INITIALIZATION. L_LIFNR-SIGN = ‘I’. L_LIFNR-OPTION = ‘BT’. L_LIFNR-LOW = ‘1000′. L_LIFNR-HIGH = ‘3000′. APPEND L_LIFNR.

AT SELECTION-SCREEN ON L_LIFNR. IF L_LIFNR-LOW = ‘ ‘ OR L_LIFNR-HIGH = ‘ ‘. MESSAGE TEXT-111 TYPE ‘E’. ENDIF.

Retrieve the fields LIFNR, NAME1, ORT01, and PSTLZ from table LFA1 into internal table IT where the field LIFNR is contained in the list of values stored in variable L_LIFNR.

WRITE:/ ‘LIFNR’ COLOR 5, 10 ‘NAME1′ COLOR 5, 40 ‘ORT01′ COLOR 5, 60 ‘PSTLZ’ COLOR 5. ULINE.

Iterate through the internal table “IT” and assign each row to the work area “WA”. Display the values of fields “LIFNR”, “NAME1”, “ORT01”, and “PSTLZ” with specific column widths. Once all rows have been processed, end the loop.

At the top of the page, write a line that says “CLASSICAL REPORT – LFA1 TABLE” in color 4. Add an underline below it. At the end of the page, there should be no more content to display.

SELECTION-SCREEN: START OF BLOCK B1 WITH FRAME TITLE TEXT-000. SELECT-OPTIONS: L_LIFNR FOR LFA1-LIFNR. SELECTION-SCREEN: END OF BLOCK B1..

Define a data type called TY_STR, which consists of fields such as LIFNR (vendor number), NAME1 (vendor name), ORT01 (city), and PSTLZ (postal code).

At the beginning of the process, a set of values is assigned to a variable called L_LIFNR. The assigned values indicate that the variable should be used to search for a range of numbers between 1000 and 3000. This information is then added to the existing data in L_LIFNR.

AT SELECTION-SCREEN ON L_LIFNR. IF L_LIFNR-LOW = ‘ ‘ OR L_LIFNR-HIGH = ‘ ‘. MESSAGE TEXT-111 TYPE ‘E’. ENDIF.

At the beginning of the selection process, retrieve the vendor number, name, address and postal code from table LFA1 into an internal table IT based on a list of specified vendor numbers. Once the selection is complete, end the process.

WRITE:/ ‘LIFNR’ COLOR 5, 10 ‘NAME1′ COLOR 5, 40 ‘ORT01′ COLOR 5, 60 ‘PSTLZ’ COLOR 5. ULINE.

Output the values of WA-LIFNR, WA-NAME1, WA-ORT01, and WA-PSTLZ with specified column widths.

Output a line of text with the message “CLASSICAL REPORT – LFA1 TABLE” in color 4 and underlined.

What are the classical report events?

Load-of-program is an event in SAP ABAP that is triggered when a program is loaded into memory. It allows for the initialization of variables and other necessary preparations before the program execution begins.

Initialization, another event in SAP ABAP, occurs after Load-of-program and provides an opportunity to set default values for input fields on the selection screen. This event ensures that all required data elements are properly initialized before user interaction.

At Selection-Screen on field is an event triggered when a specific field on the selection screen receives focus or input from the user. This allows for dynamic validations or modifications based on user actions within individual fields.

At Selection-Screen on value request occurs when a value help icon next to a field is clicked by the user. This event provides an opportunity to dynamically generate and display possible values for that particular field, assisting users with their selections.

At Selection-Screen on help request triggers when a help icon next to a field is clicked by the user. It allows developers to provide context-sensitive help documentation or guide users through complex processes related to that specific field.

Start-of-Selection marks the beginning of actual processing logic within an SAP ABAP program after all necessary initializations have been completed successfully. Here, developers can retrieve data from databases, perform calculations, execute business logic, and generate reports as per requirements.

What do SAP reports entail?

A report in SAP ABAP is a program that presents data in an organized manner. It is commonly used when there is a need to display a large amount of data in a systematic way. Before starting with reports in SAP ABAP, it is important to understand some key points.

Firstly, reports are executable programs categorized as Type 1 or Type E. Type 1 reports are interactive and allow user input during runtime, while Type E reports are non-interactive and do not require any user input.

Secondly, reports can be created using various techniques such as classical reporting or ALV (ABAP List Viewer). Classical reporting involves writing code manually to retrieve and display the required data. On the other hand, ALV provides pre-defined functions for displaying data in tabular format with additional features like sorting and filtering.

Katy