HelixFlo Tutorial #2 — Conditionals | If/Else & Switch/Case | Build Your API with HelixFlo DSL
Welcome to HelixFlo Tutorial Series! 🚀
In this tutorial, we’ll learn how to use conditional logic in HelixFlo to build smarter and more dynamic API flows.
In this episode, we create a practical API that determines a customer’s discount based on their membership tier.
🔥 What You'll Learn
✅ How to use If / Else conditions in HelixFlo
✅ Using GraalVM JavaScript expressions for conditions
✅ How to create and use variables
✅ How to use Switch / Case for multiple conditions
✅ Using a Default case for unexpected values
✅ Logging messages based on conditions
✅ Returning dynamic JSON responses
✅ Testing APIs with different query parameters
🧩 Example
Try the API with different tiers:
GET /tutorial/conditionals?tier=gold
GET /tutorial/conditionals?tier=silver
GET /tutorial/conditionals?tier=bronze
GET /tutorial/conditionals?tier=nonsense
For example, a Gold customer receives a 20% VIP discount, while other tiers receive no VIP discount.
📋 HelixFlo
HelixFlo is a DSL-based integration and API framework powered by Java 17, designed to make API development, integrations, workflows, validations, database operations, and custom connectors simpler and faster.
Learn more and explore the documentation:
HelixFlo Documentation
📺 Tutorial Series
This tutorial is part of the HelixFlo Tutorial Series, where we build APIs and integrations step-by-step using the HelixFlo DSL.
Previous Tutorial:
Tutorial #1 — Variables & Logging - • HelixFlo Tutorial #1 | Variables & Logging...
Next Tutorial:
Coming soon 🚀
🔗 Useful Links
📚 Documentation: docs.helixflo.in
🏷️ Tags
#HelixFlo #Java #Java17 #API #Integration #APIDevelopment #LowCode #DSL #BackendDevelopment #SoftwareDevelopment #Microservices #GraalVM #Tutorial #Programming