feat: verb subtype + updateRelation + requireSubtype enforcement
Brings verbs to first-class parity with nouns. The 7.29.0 subtype primitive
shipped for entities only; this release ships the symmetric verb mirror plus
the enforcement layer for ensuring every entity AND every relationship has
both type AND subtype.
Layer V1 — verb subtype mirror
- HNSWVerbWithMetadata.subtype + STANDARD_VERB_FIELDS set + resolveVerbField()
- Relation<T>.subtype, RelateParams<T>.subtype, UpdateRelationParams<T> extended,
GetRelationsParams.subtype, GraphConstraints.subtype (for find connected)
- relate() persists subtype on verbMetadata + GraphVerb + transaction ops
- getRelations({ type, subtype }) fast-path filter with set membership
- find({ connected: { via, subtype, depth } }) traversal filter (depth-1 on
the JS path; explicit error on depth > 1 pointing at Cortex native)
- verbsToRelations + storage destructure sites surface subtype to top-level
- All three graph-index fast-path queries (getVerbsBySource/ByTarget) enrich
with subtype from metadata
Layer V2 — updateRelation() closes a pre-7.30 gap
- New first-class verb update method (parallel to update() for nouns)
- Changes subtype/type/weight/confidence/data/metadata in place
- Re-indexes in graph adjacency when verb type changes; id preserved
- validateUpdateRelationParams enforces id + at-least-one-field-to-update
Layer V3 — verb subtype storage rollup
- verbSubtypeCountsByType: Map<number, Map<string, number>> on BaseStorage
- verbSubtypeByIdCache for self-heal during update/delete
- incrementVerbSubtypeCount + decrementVerbSubtypeCount maintain state
- loadVerbSubtypeStatistics + saveVerbSubtypeStatistics persist to
_system/verb-subtype-statistics.json (mirrors noun-side shape)
- rebuildVerbSubtypeCounts for poison recovery / explicit repair
- getVerbSubtypeCountsByType accessor for the public counts API
- Wired into init() / flushCounts() / saveVerbMetadata / deleteVerbMetadata
Layer V4 — verb counts API + relationshipSubtypesOf
- brain.counts.byRelationshipSubtype(verb, subtype?) — O(1) breakdown or point
- brain.counts.topRelationshipSubtypes(verb, n) — top N by count
- brain.relationshipSubtypesOf(verb) — sorted distinct subtypes
Layer V5 — migrateField extended to verbs
- New entityKind?: 'noun' | 'verb' | 'both' option (default 'noun')
- Mirror verb iteration via storage.getVerbs() with same path semantics
- verbToRelationLike + buildRelationMigrationUpdate helpers project the
storage verb shape onto the Entity<T>-shaped surface readPath understands
- Routes through new updateRelation() for the verb-side rewrite
Enforcement (opt-in in 7.30, default in 8.0)
- brain.requireSubtype(type, options) — unified API for NounType OR VerbType.
Registers per-type rules with optional values whitelist; composes with the
brain-wide flag.
- new Brainy({ requireSubtype: true }) — brain-wide strict mode. Every public
write path validates the pairing guarantee.
- { except: [NounType.Thing, ...] } form for catch-all type exemptions
- Atomic-fail semantics on addMany / relateMany — pre-validate every item
before any storage write, throw on first failure with item index
- Per-type rules + brain-wide flag both throw with descriptive messages
- VFS infrastructure bypass via metadata.isVFSEntity / isVFS markers so
brain's own VFS writes don't get rejected when strict mode is on
VFS labeling — concrete subtypes for infrastructure entities
- VFS root: NounType.Collection + subtype: 'vfs-root' (was bare Collection)
- VFS directories: subtype: 'vfs-directory'
- VFS files: subtype: 'vfs-file' (NounType still mime-based)
- VFS containment edges: VerbType.Contains + subtype: 'vfs-contains'
- Lets consumers cleanly enumerate VFS state via find({ subtype: 'vfs-file' })
and distinguish Brainy's VFS Collections from user-created Collections
Docs
- docs/guides/subtypes-and-facets.md extended with Layer V (Verbs) section +
Enforcement section. New full reference at the bottom split into Layer 1
(nouns), Layer V (verbs), Layer 2 (facets), Layer 3 (migration), Enforcement.
- docs/api/README.md adds updateRelation(), getRelations({ subtype }), the
three verb-side counts methods, requireSubtype(), and the brain-wide
constructor option. relate() params include subtype.
- docs/DATA_MODEL.md adds a Subtype-for-VerbType section + STANDARD_VERB_FIELDS
- docs/architecture/finite-type-system.md extends Principle 1a to verbs
- docs/QUERY_OPERATORS.md adds a verb-subtype filter section covering
getRelations and find({connected, subtype}) traversal
- README.md "Subtypes" section now shows both noun + verb in one example +
the enforcement APIs
- RELEASES.md v7.30.0 entry with the full noun/verb capability parity matrix
Tests
- tests/integration/verb-subtype-and-enforcement.test.ts — 30 new tests
covering V1 round-trips, V1 set membership, updateRelation in place,
updateRelation preservation, V2 counts breakdown + point + topN + distinct,
V2 decrements on unrelate, V2 re-routes on updateRelation, V3 depth-1
traversal filter, V3 depth>1 explicit error, V4 verb migration, V4 both
entity kinds, V4 readBoth preservation, V5 per-type required rejection,
V5 vocabulary rejection, V5 on-vocab acceptance, V5 verb-side enforcement,
V5 addMany atomic-fail, V5 relateMany atomic-fail, V5 update enforcement,
V5 updateRelation enforcement, V5 brain-wide strict mode, V5 except clause.
Verification
- Unit suite: 1468/1468 passing
- Noun subtype integration (7.29 carryover): 26/26 passing
- Verb subtype + enforcement integration: 30/30 passing
- Type-check: clean
- Build: clean
- Public closed-source reference audit: clean
Internal 8.0 spec
- .strategy/BRAINY-8.0-SUBTYPE-CONTRACT.md (gitignored, not in npm artifact)
documents the contract upgrade Cortex 3.0 implements against: required-by-
default subtype, SubtypeRegistry typing hook, native simplification,
multi-hop traversal native fast path, brain.fillSubtypes() migration helper.
Coordinated via PLATFORM-HANDOFF rows CTX-SUBTYPE-PARITY-V2 (7.30 parallel
work) and CTX-SUBTYPE-8.0-CONTRACT (8.0 spec).
This commit is contained in:
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@ -271,8 +271,199 @@ await brain.counts.byField('status', { type: NounType.Event })
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await brain.migrateField({ from: 'metadata.kind', to: 'subtype' })
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```
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## Layer V — `subtype` on relationships (verbs)
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Relationships are first-class citizens too. Every verb (`VerbType`) gets the same `subtype` primitive: a `ReportsTo` relationship might carry `subtype: 'direct'` vs `'dotted-line'`; a `RelatedTo` edge might carry `'spouse'` / `'sibling'` / `'colleague'`. Same shape as the noun side: flat string, no hierarchy, top-level standard field, indexed on the fast path.
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### Write
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```typescript
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const ceoId = await brain.add({ type: NounType.Person, subtype: 'employee', data: 'Avery' })
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const vpId = await brain.add({ type: NounType.Person, subtype: 'employee', data: 'Jordan' })
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const matrixId = await brain.add({ type: NounType.Person, subtype: 'contractor', data: 'Sam' })
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await brain.relate({
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from: ceoId,
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to: vpId,
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type: VerbType.ReportsTo,
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subtype: 'direct'
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})
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await brain.relate({
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from: ceoId,
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to: matrixId,
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type: VerbType.ReportsTo,
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subtype: 'dotted-line'
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})
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```
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### Read & filter
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```typescript
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// Direct reports — fast path filter (column-store hit, not metadata fallback)
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const direct = await brain.getRelations({
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from: ceoId,
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type: VerbType.ReportsTo,
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subtype: 'direct'
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})
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// Set membership
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const allReports = await brain.getRelations({
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from: ceoId,
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type: VerbType.ReportsTo,
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subtype: ['direct', 'dotted-line']
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})
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```
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### Update (new — `updateRelation()`)
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Verbs previously had no update method — the only way to change a relationship was delete-then-recreate. 7.30 closes that gap:
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```typescript
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// Promote a dotted-line report to direct without losing the edge id
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await brain.updateRelation({ id: relationId, subtype: 'direct' })
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// Or change weight/confidence
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await brain.updateRelation({ id: relationId, weight: 0.5, confidence: 0.9 })
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```
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### Traversal filter
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`find({ connected, subtype })` filters traversal edges by their subtype. Composes with `via` (verb-type filter):
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```typescript
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// All direct reports two hops deep (will be supported in Cortex; for now depth-1)
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const directChain = await brain.find({
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connected: {
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from: ceoId,
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via: VerbType.ReportsTo,
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subtype: 'direct',
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depth: 1
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}
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})
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```
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Multi-hop subtype filtering (`depth > 1`) lights up on the Cortex native path; the JS path throws today rather than return incorrect partial results.
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### Counts
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Same shape as the noun-side counts API:
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```typescript
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brain.counts.byRelationshipSubtype(VerbType.ReportsTo)
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// → { direct: 12, 'dotted-line': 3 }
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brain.counts.byRelationshipSubtype(VerbType.ReportsTo, 'direct') // O(1) point
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// → 12
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brain.counts.topRelationshipSubtypes(VerbType.ReportsTo, 3)
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// → [['direct', 12], ['dotted-line', 3]]
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brain.relationshipSubtypesOf(VerbType.ReportsTo)
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// → ['direct', 'dotted-line']
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```
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These are O(1) lookups backed by the persisted `_system/verb-subtype-statistics.json` rollup — same self-heal machinery as the noun-side rollup.
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### Migrate verb fields
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`migrateField()` now walks verbs too:
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```typescript
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// Migrate verb-side metadata.kind → top-level subtype
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await brain.migrateField({
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from: 'metadata.kind',
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to: 'subtype',
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entityKind: 'verb'
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})
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// Or migrate both nouns and verbs in one pass
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await brain.migrateField({
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from: 'metadata.kind',
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to: 'subtype',
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entityKind: 'both'
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})
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```
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Default is `entityKind: 'noun'` (backward-compatible with 7.29).
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## Enforcement — `requireSubtype()` + brain-wide strict mode
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By default (7.30) subtype is optional. Two complementary opt-in mechanisms let you enforce the pairing of type + subtype on every write:
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### Per-type registration
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Mark a specific `NounType` or `VerbType` as requiring a subtype, optionally with a fixed vocabulary:
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```typescript
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brain.requireSubtype(NounType.Person, {
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values: ['employee', 'customer', 'vendor'],
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required: true
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})
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brain.requireSubtype(VerbType.ReportsTo, {
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values: ['direct', 'dotted-line'],
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required: true
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})
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// Now this throws — Person requires a subtype:
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await brain.add({ type: NounType.Person, data: 'no subtype' })
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// And this throws — 'matrix' isn't in the registered vocabulary:
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await brain.relate({
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from: a,
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to: b,
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type: VerbType.ReportsTo,
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subtype: 'matrix'
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})
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```
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### Brain-wide strict mode
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Enforce on every write across the whole brain:
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```typescript
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const brain = new Brainy({ requireSubtype: true })
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// Allow specific types to omit subtype (e.g. catch-all `Thing`)
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const brain2 = new Brainy({
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requireSubtype: { except: [NounType.Thing, NounType.Custom] }
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})
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```
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When strict mode is on:
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- Every `add()` / `addMany()` / `update()` / `relate()` / `relateMany()` / `updateRelation()` rejects writes missing a subtype on a non-exempt type.
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- `addMany()` and `relateMany()` validate every item BEFORE any storage write — atomic-fail semantics, no partial writes.
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- Per-type rules registered via `requireSubtype()` compose with the brain-wide flag; specific rules win when both apply.
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- Brainy's own internal writes (VFS root, VFS directories, VFS file entities) bypass enforcement via the `metadata.isVFSEntity: true` infrastructure marker.
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### Migrating to strict mode on an existing brain
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`brain.migrateField()` is your friend — populate `subtype` from an existing convention before flipping strict mode on:
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```typescript
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// Step 1: backfill subtype from your existing metadata.kind convention
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await brain.migrateField({
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from: 'metadata.kind',
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to: 'subtype',
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entityKind: 'both'
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})
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// Step 2: register the vocabulary
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brain.requireSubtype(NounType.Person, {
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values: ['employee', 'customer', 'vendor'],
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required: true
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})
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// Step 3: future writes must have a subtype matching the vocabulary
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await brain.add({ type: NounType.Person, subtype: 'employee', data: '...' })
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```
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## Reference
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### Layer 1 — `subtype` (nouns)
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- `brain.add({ ..., subtype: 'value' })` — write the field
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- `brain.update({ id, subtype: 'value' })` — change the field
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- `brain.find({ type, subtype })` — filter (fast path)
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- `brain.counts.bySubtype(type, subtype?)` — O(1) counts
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- `brain.counts.topSubtypes(type, n?)` — top N by count
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- `brain.subtypesOf(type)` — distinct subtype list
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### Layer V — `subtype` (verbs / relationships)
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- `brain.relate({ ..., subtype: 'value' })` — write the field
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- `brain.updateRelation({ id, subtype, type?, weight?, ... })` — change a relationship
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- `brain.getRelations({ subtype })` — filter (fast path)
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- `brain.getRelations({ subtype: ['a', 'b'] })` — set membership
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- `brain.find({ connected: { via, subtype, depth } })` — traversal filter
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- `brain.counts.byRelationshipSubtype(verb, subtype?)` — O(1) counts
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- `brain.counts.topRelationshipSubtypes(verb, n?)` — top N by count
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- `brain.relationshipSubtypesOf(verb)` — distinct subtype list
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### Layer 2 — generic facets
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- `brain.trackField(name, { perType?, values? })` — register a facet
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- `brain.counts.byField(name, { type? })` — facet counts
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- `brain.migrateField({ from, to, readBoth?, batchSize?, onProgress? })` — rewrite a field
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### Layer 3 — migration
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- `brain.migrateField({ from, to, readBoth?, batchSize?, onProgress?, entityKind? })` — rewrite a field (nouns, verbs, or both)
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### Enforcement
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- `brain.requireSubtype(type, { values?, required })` — per-`NounType` / `VerbType` rule
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- `new Brainy({ requireSubtype: true })` — brain-wide strict mode
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- `new Brainy({ requireSubtype: { except: [type, ...] } })` — strict with exemptions
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