Day 2 Learn DataWeave Step by Step: Accessing Nested Data in XML & JSON | DataWeave for Beginners | MuleSoft
Welcome to Day 2 of the 30 Days of DataWeave Challenge!
Today’s lesson focuses on one of the most important skills in DataWeave:
👉 how to navigate nested XML and JSON structures using operators.
Whether you’re working with APIs, legacy systems, or enterprise integrations, mastering these operators will save you from countless errors and help you build clean, reliable transformations.
🔍 What You’ll Learn Today
✔ Dot notation (.) for accessing nested fields
✔ Selector notation ([]) for arrays & special keys
✔ Safe Navigation (?.) to avoid null errors
✔ Default values (default)
✔ Accessing XML attributes using @
✔ Handling repeated XML elements as arrays
✔ Practical examples for both XML and JSON
✔ Common mistakes and best practices
➡️ Next Up (Day 3): DataWeave Arrays — map(), filter(), reduce()
If you're following along, drop a "Day 2 done!" in the comments.
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