chore: Extract FileResource assignment update [DHIS2-21378]

[enricocolasante]

Summary

Extracts the FileResource assignment update during tracker import out of the Hibernate persistence context and into a direct JDBC UPDATE. This avoids dirty-marking the entity and prevents PostUpdateAuditListener (and other Hibernate audit listeners) from firing for every file-resource assignment during a tracker import.

• Adds FileResourceStore.updateAssignment(uid, assigned, fileResourceOwner) backed by JdbcTemplate, setting isassigned, fileresourceowner, and lastupdated = now() in a single statement.
• Replaces entityManager.merge(fileResource) in AbstractTrackerPersister#assignFileResource with the new store method. The in-memory copy in the preheat is intentionally left as-is — nothing reads it back later in the import.
• Threads FileResourceStore through all concrete persisters: EnrollmentPersister, RelationshipPersister, SingleEventPersister, TrackedEntityPersister, TrackerEventPersister.

Performance

25726592602
25726590062
25726586827
25726584415

compare mode: 4 baseline run(s), 4 candidate run(s) on load profile

Median Response Time (p50) (ms)

Requests	baseline	req/s	candidate	req/s	Diff (ms)	Change
Login	119	0.37	108	0.36	-11	⬇️ -9.2%
MNCH import	1,046	1.84	1,050	1.80	+4	⬆️ +0.4%
Child Programme import	465	1.84	466	1.80	+0	⬆️ +0.1%
ANC import	362	1.84	364	1.80	+2	⬆️ +0.7%

95th Percentile Response Time (p95) (ms)

Requests	baseline	req/s	candidate	req/s	Diff (ms)	Change
Login	154	0.37	134	0.36	-20	⬇️ -13.0%
MNCH import	1,896	1.84	2,009	1.80	+114	⬆️ +6.0%
Child Programme import	508	1.84	510	1.80	+2	⬆️ +0.4%
ANC import	649	1.84	520	1.80	-129	⬇️ -19.9%

⬇️ = faster, ⬆️ = slower

Next steps

• Quick fix ✅ formatDate: SimpleDateFormat → static final DateTimeFormatter ─
• Phase 0 ✅ Remove EntityManager from TrackerPersister interface and all method parameters - feat: decouple ChangeLogAccumulator from Hibernate Session [DHIS2-21378] #23836
• Phase 1 ✅ Decouple ChangeLogAccumulator from Hibernate Session; obtain the
  transaction-bound Connection via DataSourceUtils instead of session.doWork()
• Phase 2 ✅ Extract FileResource assignment update out of AbstractTrackerPersister
  into FileResourceStore
• Phase 3 — Introduce EntityWriteBatch; accumulate and batch-flush TEAV writes
  (multi-row INSERT / unnest UPDATE / tuple DELETE)
• Phase 4 — Pre-allocate IDs from PostgreSQL sequences; stage top-level entity
  inserts and updates in EntityWriteBatch; remove all entityManager.flush() calls
• Phase 5 — Replace updateTrackedEntitiesLastUpdated named query with
  NamedParameterJdbcTemplate; remove last Hibernate dependency from
  DefaultTrackerBundleService
• Phase 6 — Implement JDBC flush methods one entity type at a time
  (TrackedEntity → Enrollment → TrackerEvent/SingleEvent → Relationship)

[teleivo]

why are these needed now?

[teleivo]

and if you clear before flush I think there is nothing to flush

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud