ABAP Inventory Management System

A simple, console-based Inventory Management System implemented using modern ABAP Object-Oriented programming.
The project is ABAP Cloud compatible and focuses on core ABAP language concepts rather than enterprise frameworks.

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Overview

This project demonstrates how to design and execute a small but complete ABAP application using object-oriented principles.
The inventory is managed in memory using internal tables and is executed via a runnable ABAP Cloud class.

The goal of this project is learning and showcasing clean ABAP logic

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Features

• Add inventory items with input validation
• Search items by ID
• Update item quantity
• Delete items from inventory
• Compute total number of items
• Compute total stock quantity
• Runnable using IF_OO_ADT_CLASSRUN (ABAP Cloud execution model)

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Technologies & Concepts Used

• Modern ABAP Object-Oriented programming
• Class-based design and encapsulation
• Internal tables for data storage
• CRUD operations (Create, Read, Update, Delete)
• sy-subrc handling for existence checks
• Assertions for input validation
• String templates for formatted console output
• Runnable ABAP Cloud classes (IF_OO_ADT_CLASSRUN)

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How to Run

1. Open the project in Eclipse with ADT
2. Activate the classes
3. Right-click on class ZCL_INVENTORY_DEMO
4. Select
   Run As → ABAP Application (Console)
5. View the output in the ADT console

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Design Notes

• The inventory data is stored in an internal table (no database).
• Validation is performed using ASSERT to keep the logic simple and explicit.
• Errors such as operating on non-existing items are treated as logical errors.
• The project intentionally avoids RAP, CDS, and database persistence to focus on mastering ABAP fundamentals first.

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Learning Focus

This project was built to strengthen understanding of:

• ABAP execution flow in ABAP Cloud
• Method visibility and class interfaces
• Internal table operations
• Defensive programming
• Readable and explainable ABAP code

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Future Enhancements

• ABAP Unit tests
• Persistence using database tables
• RAP and CDS-based implementation
• Fiori or service-based exposure

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Disclaimer

This is a learning and portfolio project intended to demonstrate ABAP programming skills. It is not intended for productive use without further enhancements.