Conversion Between XML and Ballerina Collections - Part 1

This video is part of the advanced Ballerina training series on XML manipulation. It's designed to help you learn and apply Ballerina for integration scenarios.

Discover how to convert XML values to Ballerina collections like tables, maps, and arrays in today's video tutorial. Building on the previous tutorial's XML-to-JSON array conversion, the instructor focuses on converting XML into a Ballerina array. The function developed in the earlier tutorial is revisited, which extracts customer information from the XML response using query and navigation expressions.

To generate unique customers from the XML payload, the tutorial introduces the concept of Ballerina tables. By defining a key for the table, duplicate entries can be automatically removed. In this case, the email field is chosen as the key. The implementation is modified to convert the output type from an array to a table, utilizing the read-only attribute for the key field.

To generate XML output from the table, a new query expression is introduced. An XML template expression is used to iterate through the table and populate the customer details in the XML structure.

Running the service demonstrates the removal of duplicate customers, producing a list of unique customers in the XML response.

By following this tutorial, viewers gain insights into converting XML into Ballerina collections and vice versa. The tutorial showcases the use of tables for eliminating duplicates and highlights the seamless conversion between XML and Ballerina collections. Join the instructor in the next video for more exciting lessons.

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