Refactor Spring Boot Components | Dataford Interview Questions

Refactor sections of the provided Spring Boot project: identify the issues introduced across the entity, service, controller and exception-handler layers and explain your approach while thinking out loud. Asked in the Live coding stage. This was the second task in the same session; the candidate only had time to suggest moving logic to the repository.

For grading, represent each finding as a dictionary with layer, issue, and severity, then return findings grouped by layer in the order entity, service, controller, exception-handler, preserving input order within each group.

Input and Output

refactor_findings(findings) receives a list of dictionaries and returns a dictionary mapping each supported layer to its findings.

Constraints

0 <= len(findings) <= 10^4
Each finding contains layer, issue, and severity keys
Supported layers are entity, service, controller, and exception-handler
Input order must be preserved within each layer

Function Signature

def refactor_findings(findings):

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