ABAP

ABAP. Advanced Business Application Programming is a high-level programming language created by the German software corporation SAP SE. It is the primary language for developing applications within the SAP NetWeaver platform and the entire ecosystem of SAP ERP systems. Originally designed for report generation, it has evolved into a comprehensive language for building enterprise-scale business applications, forming the core of solutions like SAP S/4HANA.

History and development

The language was initially developed in the 1980s by SAP SE, then known as Systemanalyse und Programmentwicklung, to build the company's flagship SAP R/2 system for mainframe computers. With the transition to the client-server architecture of SAP R/3 in 1992, it became the central tool for customizing and extending SAP software for global clients. A major evolutionary step occurred with the introduction of ABAP Objects in 1999, which added full object-oriented programming capabilities, aligning the language with modern software engineering practices. This evolution was closely tied to the development of the SAP NetWeaver application platform, which positioned ABAP as a key technology for enterprise service-oriented architecture.

Syntax and language features

The syntax is characterized by its English-like readability, drawing initial influence from COBOL and Pascal (programming language). It is a statically typed language with a rich set of native data types and complex structures like internal tables, which function as dynamic arrays. Key language constructs include explicit control statements for database access using Open SQL, and special statements for processing SAP GUI screens and logical databases. The introduction of ABAP Objects brought features such as inheritance (object-oriented programming), polymorphism (computer science), and encapsulation (computer programming), enabling the development of more modular and maintainable code within the SAP NetWeaver environment.

ABAP Workbench and development environment

Development is primarily conducted within the ABAP Workbench, an integrated set of tools accessible via the SAP GUI or the browser-based SAP Business Application Studio. The central repository for all development objects is the ABAP Dictionary, which defines data types, database tables, and views. Key tools include the ABAP Editor for writing code, the Screen Painter for designing dynpro screens, the Menu Painter for creating interfaces, and the Class Builder for object-oriented programming. The ABAP Debugger and Runtime Analysis tools are essential for testing and optimizing performance, often in conjunction with the SAP Solution Manager.

Integration with SAP systems

The language is deeply integrated into the fabric of SAP ERP and SAP S/4HANA, allowing developers to extend standard applications delivered by SAP SE. This is done through user exits, Business Add-Ins (BAdIs), and enhancement points. It provides native, optimized access to the underlying SAP HANA in-memory database via Open SQL extensions and Core Data Services (CDS) views. Furthermore, ABAP programs can expose and consume services as part of a service-oriented architecture, enabling integration with other systems like SAP SuccessFactors or external platforms through technologies like OData and SOAP.

Modern ABAP and evolution

The language continues to evolve, with a strong focus on aligning with cloud-native development principles for the SAP Business Technology Platform. Modern coding conventions, often referred to as "Clean ABAP," emphasize readability and testability. Key innovations include the adoption of a RESTful programming model with ABAP RESTful Application Programming Model (RAP), which simplifies the creation of OData services and Fiori apps. The language now also supports development entirely in the cloud with SAP BTP, ABAP environment, featuring git integration and continuous delivery pipelines, marking a significant shift from its traditional on-premises software roots. Category:Programming languages Category:SAP SE software Category:Procedural programming languages Category:Object-oriented programming languages