Codewalkers/.planning/phases/02-data-layer/02-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	duration	completed
02-data-layer	02	database	drizzle repository-pattern hexagonal sqlite crud	phase provides 02-01 SQLite database with Drizzle ORM and task hierarchy schema	Repository port interfaces (Initiative, Phase, Plan, Task) Drizzle adapter implementations for all repositories In-memory test database helpers Cascade delete verification through repository layer	03-git-integration 04-agent-lifecycle 05-task-dispatch	added patterns nanoid repository-pattern port-adapter dependency-injection	created modified src/db/repositories/initiative-repository.ts src/db/repositories/phase-repository.ts src/db/repositories/plan-repository.ts src/db/repositories/task-repository.ts src/db/repositories/index.ts src/db/repositories/drizzle/initiative.ts src/db/repositories/drizzle/phase.ts src/db/repositories/drizzle/plan.ts src/db/repositories/drizzle/task.ts src/db/repositories/drizzle/index.ts src/db/repositories/drizzle/test-helpers.ts src/db/repositories/drizzle/*.test.ts src/db/index.ts	Repository per aggregate: Each repository only knows about its own table Port-adapter pattern: Interfaces are ports, Drizzle implementations are adapters Fetch after insert: Adapters fetch inserted record to ensure all defaults applied In-memory testing: createTestDatabase helper with raw SQL schema setup	Repository pattern: Separate interfaces from implementations DI for database: Adapters take DrizzleDatabase in constructor Test helpers: createTestDatabase() for isolated test instances	5min	2026-01-30

Phase 2 Plan 2: Repository Layer Summary

Repository layer with separate port interfaces and Drizzle adapters per aggregate (Initiative, Phase, Plan, Task)

Performance

• Duration: 5 min
• Started: 2026-01-30T18:06:00Z
• Completed: 2026-01-30T18:11:44Z
• Tasks: 4
• Files modified: 17

Accomplishments

• Created 4 repository port interfaces following hexagonal architecture
• Implemented 4 Drizzle adapter classes with full CRUD operations
• Added comprehensive test coverage (45 tests) including cascade delete verification
• Updated src/db/index.ts to export all interfaces and adapters

Task Commits

Each task was committed atomically:

1. Task 1: Create repository port interfaces - 5e5bca3 (feat)
2. Task 2: Create Drizzle repository adapters - 14e0f6f (feat)
3. Task 3: Write repository tests - 830aa4b (test)
4. Task 4: Update exports and test cascade deletes - 112cc23 (feat)

Files Created/Modified

Port Interfaces:

• src/db/repositories/initiative-repository.ts - InitiativeRepository interface + types
• src/db/repositories/phase-repository.ts - PhaseRepository interface with findByInitiativeId
• src/db/repositories/plan-repository.ts - PlanRepository interface with findByPhaseId
• src/db/repositories/task-repository.ts - TaskRepository interface with findByPlanId
• src/db/repositories/index.ts - Re-exports all interfaces

Drizzle Adapters:

• src/db/repositories/drizzle/initiative.ts - DrizzleInitiativeRepository
• src/db/repositories/drizzle/phase.ts - DrizzlePhaseRepository (orders by number)
• src/db/repositories/drizzle/plan.ts - DrizzlePlanRepository (orders by number)
• src/db/repositories/drizzle/task.ts - DrizzleTaskRepository (orders by order field)
• src/db/repositories/drizzle/index.ts - Re-exports all adapters

Tests:

• src/db/repositories/drizzle/test-helpers.ts - createTestDatabase with in-memory SQLite
• src/db/repositories/drizzle/initiative.test.ts - 10 tests
• src/db/repositories/drizzle/phase.test.ts - 10 tests
• src/db/repositories/drizzle/plan.test.ts - 10 tests
• src/db/repositories/drizzle/task.test.ts - 12 tests
• src/db/repositories/drizzle/cascade.test.ts - 3 cascade delete tests

Updated:

• src/db/index.ts - Added repository interface and adapter exports

Decisions Made

• Repository per aggregate: Each repository only knows its own table, maintaining clean DDD boundaries
• Port-adapter pattern: Same pattern as EventBus from Phase 1.1 - interfaces are ports, implementations are adapters
• Fetch after insert: Adapters fetch the inserted record to ensure defaults from schema are applied
• In-memory test setup: createTestDatabase() uses raw SQL to create schema for in-memory tests

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Repository layer complete with full CRUD operations
• All repositories tested with 45 passing tests
• Cascade deletes verified through repository layer
• Ready for service layer implementation in future plans
• No blockers for continuing

---

Phase: 02-data-layer Completed: 2026-01-30