OpenNoodl/dev-docs/tasks/phase-5-multi-target-deployment/01-byob-backend/TASK-007-integrated-backend/TASK-007A-PROGRESS.md

TASK-007A: LocalSQL Adapter - Progress

Status: ✅ Core Implementation Complete
Branch: feature/task-007a-localsql-adapter
Started: 2026-01-15
Last Updated: 2026-01-15

---

What Was Built

Files Created

packages/noodl-runtime/src/api/adapters/
├── index.js                    # Adapter registry & exports
├── types.js                    # JSDoc type definitions
└── local-sql/
    ├── index.js                # Module exports
    ├── LocalSQLAdapter.js      # Main adapter (implements CloudStore interface)
    ├── QueryBuilder.js         # Parse-style query → SQL translation
    └── SchemaManager.js        # Table creation, migrations, export

packages/noodl-runtime/test/adapters/
└── QueryBuilder.test.js        # Unit tests for query builder

Features Implemented

LocalSQLAdapter

• ✅ Implements same API as existing CloudStore class
• ✅ Uses better-sqlite3 for local SQLite storage
• ✅ WAL mode for better concurrent access
• ✅ Event emission (create, save, delete, fetch)
• ✅ Auto-create tables on first access
• ✅ Auto-add columns for new fields

QueryBuilder

• ✅ Translates Parse-style queries to SQL
• ✅ All operators: $eq, $ne, $gt, $gte, $lt, $lte
• ✅ Collection operators: $in, $nin
• ✅ Existence: $exists
• ✅ Logical: $and, $or
• ✅ Relation support: $relatedTo
• ✅ Parse types: Date, Pointer
• ✅ SQL injection prevention
• ✅ Value serialization/deserialization

SchemaManager

• ✅ Create tables from Noodl schemas
• ✅ Add columns dynamically
• ✅ Junction tables for relations
• ✅ Export to PostgreSQL SQL
• ✅ Export to Supabase SQL (with RLS policies)
• ✅ JSON schema export/import
• ✅ Schema tracking in _Schema table

CloudStore Interface Methods

Method	Status	Notes
query()	✅	Full Parse query syntax
fetch()	✅	Single record by ID
create()	✅	With auto ID generation
save()	✅	Update existing
delete()	✅	By objectId
count()	✅	With where filter
aggregate()	✅	sum, avg, max, min
distinct()	✅	Unique values
increment()	✅	Atomic increment
addRelation()	✅	Via junction tables
removeRelation()	✅	Via junction tables
on() / off()	✅	Event subscription

---

Testing Status

Unit Tests

• ✅ QueryBuilder tests written (56 test cases)
• ⚠️ Runtime package has dependency issues (terminal-link missing)
• Tests need npm install at repo root to run

Manual Testing

• 🔲 Pending - requires better-sqlite3 installation

---

What's Next

Remaining for TASK-007A

1. Install missing test dependencies
2. Run and verify all tests pass
3. Manual integration test with real database

Next Steps (TASK-007B: Backend Server)

• Express server implementation
• REST endpoints matching CloudStore API
• WebSocket for realtime updates
• IPC handlers for Electron main process

---

Usage Example

const { LocalSQLAdapter } = require('@noodl/runtime/src/api/adapters');

// Create adapter
const adapter = new LocalSQLAdapter('/path/to/database.db');
await adapter.connect();

// Create a record
adapter.create({
  collection: 'todos',
  data: { title: 'Learn Noodl', completed: false },
  success: (record) => console.log('Created:', record),
  error: (err) => console.error(err)
});

// Query records
adapter.query({
  collection: 'todos',
  where: { completed: { $eq: false } },
  sort: '-createdAt',
  limit: 10,
  success: (results) => console.log('Todos:', results),
  error: (err) => console.error(err)
});

// Export schema to PostgreSQL
const pgSQL = adapter.getSchemaManager().generatePostgresSQL();
console.log(pgSQL);

---

Notes

• The adapter matches the callback-based API of CloudStore for compatibility
• better-sqlite3 is required but not added to package.json yet
• Will be added when integrating with Backend Server (TASK-007B)
• ESLint warnings about require() are expected (CommonJS package)