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160 lines
3.3 KiB
Markdown
160 lines
3.3 KiB
Markdown
# BaraDB JavaScript / Node.js Client
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Official JavaScript client for **BaraDB** — a multimodal database engine written in Nim.
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## Features
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- **Binary wire protocol** — fast TCP communication
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- **Promise-based API** — modern async/await
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- **Query builder** — fluent SQL construction
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- **Parameterized queries** — safe from SQL injection
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- **Vector & JSON support** — first-class multimodal types
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- **TypeScript definitions** — included out of the box
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## Installation
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```bash
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npm install baradb
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```
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Or from source:
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```bash
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git clone https://codeberg.org/baraba/bara-lang
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cd clients/javascript
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npm link
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```
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## Quick Start
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```javascript
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const { Client } = require('baradb');
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async function main() {
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const client = new Client('localhost', 9472);
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await client.connect();
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const result = await client.query("SELECT name, age FROM users WHERE age > 18");
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for (const row of result) {
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console.log(row.name, row.age);
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}
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await client.close();
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}
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main().catch(console.error);
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```
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### Parameterized Queries
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```javascript
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const { Client, WireValue } = require('baradb');
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async function main() {
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const client = new Client('localhost', 9472);
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await client.connect();
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const result = await client.queryParams(
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'SELECT * FROM users WHERE age > $1 AND country = $2',
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[WireValue.int64(18), WireValue.string('BG')]
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);
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for (const row of result) {
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console.log(row);
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}
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await client.close();
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}
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```
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### Query Builder
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```javascript
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const { Client, QueryBuilder } = require('baradb');
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async function main() {
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const client = new Client('localhost', 9472);
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await client.connect();
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const result = await new QueryBuilder(client)
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.select('name', 'email')
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.from('users')
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.where('active = true')
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.orderBy('name')
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.limit(10)
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.exec();
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for (const row of result) {
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console.log(row);
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}
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await client.close();
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}
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```
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### Vector Search
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```javascript
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const { Client, WireValue } = require('baradb');
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async function main() {
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const client = new Client('localhost', 9472);
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await client.connect();
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const result = await client.queryParams(
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'SELECT id, name FROM products ORDER BY embedding <-> $1 LIMIT 5',
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[WireValue.vector([0.1, 0.2, 0.3])]
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);
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await client.close();
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}
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```
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## Running Tests
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Unit tests (no server):
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```bash
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npm run test:unit
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```
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Integration tests (requires server on `localhost:9472`):
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```bash
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# Start server
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docker run -d -p 9472:9472 baradb:latest
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# Run integration tests
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npm run test:integration
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# Run all tests
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npm test
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```
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## API Reference
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### `new Client(host, port, options)`
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| Option | Default | Description |
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|--------------|-------------|----------------------------|
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| `host` | `localhost` | Server hostname |
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| `port` | `9472` | TCP wire protocol port |
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| `database` | `default` | Default database |
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| `username` | `admin` | Username |
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| `password` | `""` | Password |
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| `timeout` | `30000` | Socket timeout in ms |
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### Methods
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- `connect()` — open TCP connection
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- `close()` — close connection
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- `query(sql)` — execute SELECT-like query
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- `queryParams(sql, params)` — parameterized query
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- `execute(sql)` — execute DDL/DML, returns affected rows
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- `auth(token)` — JWT authentication
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- `ping()` — health check
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## License
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Apache-2.0
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