feat(journeyitem): V74 — partial unique index + note-length CHECK as atomic backstops

The append dedup guard was check-then-insert: two concurrent appends of the
same document both pass exists() and both insert. The partial unique index
on (geschichte_id, document_id) WHERE document_id IS NOT NULL closes the
race; append saveAndFlush-es and maps the DataIntegrityViolationException to
the same 409 JOURNEY_DOCUMENT_ALREADY_ADDED as the friendly pre-check. The
CHECK on note length pins the 2000-char contract in the schema, mirroring
chk_text_length on transcription_blocks.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Marcel
2026-06-10 07:21:41 +02:00
parent 02efe738a0
commit b3d54a12c4
7 changed files with 122 additions and 9 deletions

View File

@@ -131,5 +131,6 @@ geschichten_persons }o--|| geschichten : geschichte_id
geschichten_persons }o--|| persons : person_id
journey_items }o--|| geschichten : geschichte_id (ON DELETE CASCADE)
journey_items }o--o| documents : document_id (ON DELETE SET NULL)
note right of journey_items : partial UNIQUE (geschichte_id, document_id)\nWHERE document_id IS NOT NULL (V74)
@enduml