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OpenNoodl/dev-docs/tasks/phase-5-multi-target-deployment/01-byob-backend/TASK-007-integrated-backend/TASK-007A-PROGRESS.md
Richard Osborne 72c9989a68 feat(runtime): add LocalSQL adapter for CloudStore interface
TASK-007A: LocalSQL Adapter (Phase 5/Phase 11 shared foundation)

- Add LocalSQLAdapter implementing CloudStore interface with SQLite backend
- Add QueryBuilder for Parse-style query to SQL translation
- Add SchemaManager for table creation, migrations, and exports
- Support all CloudStore methods: query, fetch, create, save, delete
- Support aggregate, distinct, increment, count operations
- Support relations via junction tables
- Add schema export to PostgreSQL and Supabase formats
- Add comprehensive unit tests for QueryBuilder

This adapter enables:
- Local offline database for development
- Foundation for Phase 11 execution history storage
- Schema migration path to production databases
2026-01-15 16:04:24 +01:00

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# 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
```javascript
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)