.planning/phases/02-transaction-search-diagrams/deferred-items.md

# Deferred Items - Phase 02

## Pre-existing Issues

### ElkDiagramRendererTest breaks Spring context when run in full suite
- **Found during:** 02-01, Task 2
- **Issue:** When `ElkDiagramRendererTest` runs before Spring Boot integration tests in the same Surefire JVM, ELK's static initialization fails with `NoClassDefFoundError: org/eclipse/xtext/xbase/lib/CollectionLiterals`, which then prevents the Spring context from creating the `diagramRenderer` bean for all subsequent integration tests.
- **Impact:** Full `mvn test` for the app module shows 30 errors (all integration tests fail after ElkDiagramRendererTest runs)
- **Tests pass individually and in any grouping that excludes ElkDiagramRendererTest**
- **Root cause:** ELK 0.11.0's service loader initializes `LayeredMetaDataProvider` which uses xtext's `CollectionLiterals` in a static initializer. The class is present on the classpath (dependency resolves correctly) but fails in the Surefire fork's classloading order when combined with Spring Boot's fat classloader.
- **Suggested fix:** Configure Surefire to fork per test class, or defer ElkDiagramRendererTest to its own module/phase.
feat(02-01): extend ingestion to populate Phase 2 columns with integration tests - Refactored flattenProcessors to flattenWithMetadata (FlatProcessor record with depth/parentIndex) - INSERT now populates 12 new columns: exchange_bodies, exchange_headers, processor_depths, processor_parent_indexes, processor_error_messages, processor_error_stacktraces, processor_input_bodies, processor_output_bodies, processor_input_headers, processor_output_headers, processor_diagram_node_ids, diagram_content_hash - Exchange bodies/headers concatenated from all processor snapshots + route-level snapshots - Null ExchangeSnapshot handled gracefully (empty string defaults) - Headers serialized to JSON via Jackson ObjectMapper - IngestionSchemaIT verifies 3-level tree metadata, body concatenation, null snapshot handling - DiagramRenderer/DiagramLayout stubs created to fix pre-existing compilation error (Rule 3) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> 2026-03-11 16:15:41 +01:00			`# Deferred Items - Phase 02`

			`## Pre-existing Issues`

			`### ElkDiagramRendererTest breaks Spring context when run in full suite`
			`- Found during: 02-01, Task 2`
			- Issue: When `ElkDiagramRendererTest` runs before Spring Boot integration tests in the same Surefire JVM, ELK's static initialization fails with `NoClassDefFoundError: org/eclipse/xtext/xbase/lib/CollectionLiterals`, which then prevents the Spring context from creating the `diagramRenderer` bean for all subsequent integration tests.
			- Impact: Full `mvn test` for the app module shows 30 errors (all integration tests fail after ElkDiagramRendererTest runs)
			`- Tests pass individually and in any grouping that excludes ElkDiagramRendererTest`
			- Root cause: ELK 0.11.0's service loader initializes `LayeredMetaDataProvider` which uses xtext's `CollectionLiterals` in a static initializer. The class is present on the classpath (dependency resolves correctly) but fails in the Surefire fork's classloading order when combined with Spring Boot's fat classloader.
			`- Suggested fix: Configure Surefire to fork per test class, or defer ElkDiagramRendererTest to its own module/phase.`