Per RFC-WS-6 §Q3 v1.3 addition 2 (binding hierarchy) + §Q2 (invariant exception).
- Refactored FormBindingApplicatorException from concrete final to abstract
base. Constructor (submissionId, message, previous?) preserves submissionId
as a public readonly property so D2's outer-transaction handler can write
it structurally to form_submission_action_failures.context JSON without
regex-parsing the message. Replaced public-readonly reasonCode property
with abstract reasonCode(): string method.
- Added 3 reason-coded subclasses:
- FormBindingSchemaConfigException -> 'schema_config_error' (422)
- FormBindingInfraException -> 'temporary_error' (503, NOT final because
Timeout extends it)
- FormBindingDataIntegrityException -> 'data_integrity_error' (422)
- Added FormBindingApplicatorTimeoutException extending FormBindingInfraException
(timeout = temporary infra issue from user perspective; reasonCode inherited).
- Added IdentityMatchInvariantViolation as a sibling DomainException — NOT
in the FormBindingApplicatorException hierarchy because it's thrown
outside the binding-applicator pipeline.
- Migrated 3 existing throw sites in FormBindingApplicator::apply():
- 'no_transaction' -> FormBindingInfraException (developer-error wants
infra-triage workflow: GlitchTip alert + retry-after)
- 'no_schema' -> FormBindingSchemaConfigException
- 'unknown_purpose' -> FormBindingSchemaConfigException
- Updated FormBindingApplicatorIntegrationTest::test_no_transaction_guard_present
to assert against the new throw shape (FormBindingInfraException + new
message string) while preserving the test's intent (guard exists in source).
Wiring (deadline wrapper, classifier integration in listener catch +
retry-service recordFailure) lands in D2.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Orchestrates per-purpose subject resolution + binding conflict
resolution + per-binding writes per RFC Q4/Q7/Q9. Per-binding failures
captured in BindingPassResult, not thrown — partial failures are
expected and recoverable. Catastrophic failures (no transaction,
unknown purpose, missing schema) throw FormBindingApplicatorException
and bubble.
Per-strategy null-winner matrix implemented via a NO_OP sentinel:
overwrite=write null, append=noop, replace=conditional, first_write_wins=
write only into null target. Append is collection-only with set-merge
semantics (deduplicated array_merge).
Identity-key bindings are skipped during apply — the subject resolver
already used them for lookup/provisioning; re-writing is a no-op or a
clobber.
Activity log hierarchical: one bindings_pass_completed parent +
N binding_applied children with parent_activity_id linkage (RFC Q12).
Failed bindings get error_class/error_message in their activity entry
in addition to their FormSubmissionActionFailure row (deliberate
dual source of truth).
Refs: RFC-WS-6.md §3 (Q4, Q7, Q9, Q12)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
