Any-DB Project

The less-opinionated Node.js database abstraction layer

Synopsis

(There's also detailed API documentation available)

var anyDB = require('any-db')
var dbURL = 'driver://user:pass@hostname/database'

Establish a connection:

var conn = anyDB.createConnection(dbURL)  // Takes an optional callback

Make queries:

var sql = 'SELECT * FROM my_table'
conn.query(sql).on('row', function (row) {})  // evented
conn.query(sql, function (error, result) {})  // or callback

Use bound parameters:

sql += ' WHERE my_column = ?'
conn.query(sql, [42]).on('row', ...)           // again, evented
conn.query(sql, [42], function (err, res) {})  // or callback

Close a connection:

conn.end()

Start a transaction:

var tx = conn.begin()             // Can also take a callback
tx.on('error', function (err) {}) // Emitted for unhandled query errors
tx.query(...)                     // same interface as connections, plus...
tx.commit()                       // takes an optional callback for errors
tx.rollback()                     // this too

Create a connection pool that maintains 2-20 connections

var pool = anyDB.createPool(dbURL, {min: 2, max: 20})

pool.query(...)       // perform a single query, same API as connection
var tx = pool.begin() // start a transaction, again, same API as connection
pool.close()          // close the pool (call when your app should exit)

Description

The purpose of this library is to provide a consistent API for the commonly used functionality of SQL database drivers, while avoiding altering driver behaviour as much as possible.

Things it does

• Supports MySQL, Postgres, and SQLite3 as equally as possible. (More driver support is very much welcomed!)
• Parses connection parameters from URLs: driver://user:pass@host/database
• Streams results or gets them all at once, using an api almost identical to the existing interfaces of the MySQL and Postgres drivers.
• A simple, solid, connection pool with the ability to execute queries directly on a pool for auto-release behaviour. E.g. - this will never leak connections: pool.query("SELECT 1", function (err, results) { ... })
• Stateful transaction objects for managing database transactions.

Things it might do (feedback needed!)

• Provide a common result set API.

Things it will never do

• Add it's own query helper methods like .first or .fetchAll
• Include any sort of SQL string building. You might want to try my other library gesundheit, or one of the many alternatives for that.

Installation

For Applications

npm install --save any-db-{postgres,mysql,sqlite3}

All of the adapter libraries have any-db as a peerDependency, which means that require('any-db') will work even though you don't install it directly or add it to your package.json.

For Libraries

Add any-db to peerDependencies in package.json. This allows users of your library to satisfy the any-db dependency by installing the adapter of their choice.

If your library depends on a database connection for tests you should also add a devDependency on the corresponding any-db-<adapter> library.

License

MIT