An enterprise-grade cloud application developed during my internship at Infocus Technologies, Kolkata. This project leverages the SAP Business Technology Platform (BTP) to streamline employee leave workflows, manage balances, and handle administrative approvals. It marks my first hands-on experience building full-stack cloud applications within the SAP ecosystem, utilizing modern development paradigms like the SAP Cloud Application Programming (CAP) Model.
The Leave Management System is designed to bridge the gap between administrative oversight and employee requests. It provides a robust platform for tracking time-off, viewing remaining leave balances, and automating approval pipelines.
- Role-Based Access Control (RBAC): Distinct interfaces and permissions for standard Employees and Administrators.
- Leave Lifecycle Management: Seamless creation, cancellation, and tracking of various leave types.
- Admin Approval Portal: Centralized dashboard for managers to review, approve, or reject requests with real-time balance validation.
- Fiori Elements & UI5 User Experience: Intuitive, responsive enterprise interfaces built using modern SAP frontend libraries.
The application is built on a modern, decoupled cloud architecture:
- Cloud Platform: SAP Business Technology Platform (BTP)
- Backend Framework: SAP Cloud Application Programming (CAP) Model (Node.js/JavaScript)
- Data Modeling & Services: Core Data Services (CDS)
- Database: SAP HANA Cloud / SQLite (for local development)
- Frontend Framework: SAPUI5 & SAP Fiori Elements
The employee view focuses on simplicity, allowing users to check their available leave balances, view past request statuses, and submit new leave requests.
🖼️ Employee Page:
`
The administrative interface provides a bird's-eye view of all system data, allowing managers to view robust data grids, process pending requests, and manage employee allocations.
🖼️ Admin Page:
`
As this was my first time working in the SAP environment, the project presented an intense but highly rewarding learning curve.
Learning Core Data Services (CDS) was a fascinating paradigm shift. Defining data models and services declaratively using .cds files made backend creation incredibly fast. Understanding how CAP automatically spins up robust CRUD OData V4 services from text definitions was a massive highlight of this project.
- The Problem: One of the most significant challenges occurred during UI5 component initialization. I encountered frustrating console runtime crashes such as:
TypeError: Cannot read properties of undefined (reading 'binding') at c.updateAggregation. - The Resolution: This forced me to dig deep into the
manifest.jsonconfiguration and learn the intricate mechanics of SAP Fiori Elements andsap.fe.core.AppComponent. I discovered that Fiori Elements automatically handles bindings under the hood, meaning any slight case-sensitivity mismatch or missing entity set definition inside therouting.targetslayout options would break the core rendering aggregation. Resolving this required strict alignment between the OData service metadata and the manifest configurations.
- The Problem: Transitioning from local mock data to real database deployment caused initialization and entity schema mismatches, particularly when attempting to update bound aggregations live.
- The Resolution: I mastered the usage of
cds deploy, writing correct structural mappings, and managing persistent database states. Troubleshooting these database layer issues taught me how SAP UI layers tightly couple with OData entity sets.
To run this project locally, follow these steps:
- Node.js (v18 or higher recommended)
- SAP CAP Tools installed globally:
npm i -g @sap/cds-dk
- Clone the repository:
git clone [https://github.com/your-username/channel-manager.git](https://github.com/your-username/channel-manager.git)
cd channel-manager
```
2. **Install dependencies:**
```bash
npm install
```
3. **Deploy the database schema (SQLite locally):**
```bash
cds deploy
```
4. **Start the CAP server:**
```bash
cds watch
```
5. **Access the App:** Open `http://localhost:4004` in your browser to view the CAP launchpad and launch your UI5 applications.
---I would like to express my sincere gratitude to my mentors at Infocus Technologies, Kolkata for their guidance, architectural feedback, and support throughout this internship. This project transformed my understanding of enterprise cloud computing and ignited a strong interest in building scalable applications with SAP technologies.
To verify the authenticity of this project and my tenure at Infocus Technologies, Kolkata, you can view my official internship completion certificate below:
