Validator – TransactionValidator performs:
• Required‑field checks
• Numeric format validation (amount, tax)
• Business rules (e.g., transaction date cannot be in the future, currency code must be ISO‑4217).
Invalid rows are collected with line numbers and error messages.
The change introduces a substantial new capability that will be heavily used by downstream reporting tools, so correctness, performance, and observability are critical. FSDSS-536
Title: FSDSS-536: A Study in Tension and Breakthrough Performance from [Actress Name] Title: FSDSS-536: A Study in Tension and Breakthrough
| Aspect | Findings | Rating (1‑5) |
|--------|----------|--------------|
| Readability | Method and class names are expressive. Javadoc is present on all public members. The controller method is concise (delegates to services). | 5 |
| Modularity | Clear separation of concerns: parsing, validation, persistence, and reporting are each isolated. No massive monolithic class. | 5 |
| Error Handling | All checked exceptions from the parser are wrapped in ImportProcessingException with a user‑friendly message. The controller maps this to HTTP 422 with the ImportReportDto. | 4 |
| Logging | Added INFO log on import start/end, DEBUG on each batch persist, WARN on validation failures. Consider adding a TRACE level for per‑row parsing if debugging is needed. | 4 |
| Naming Conventions | Consistent with the existing code base (camelCase, *Dto, *Service). | 5 |
| Duplication | No obvious duplication; reuse of TransactionValidator from the single‑record flow. | 5 |
| Technical Debt | The batch size is hard‑coded in TransactionBulkService. It should be externalised to application.yml (already referenced in the comment, but not wired). | 3 | | 5 | | Modularity | Clear separation
Recommendations