rdb是Node.js的一个ORM框架，支持Postgres和MySQL数据库。
特点：
简单灵活的映射器
支持事务处理
可定制的持久化策略
支持延迟加载
基于promises.
示例代码：
var rdb = require('rdb');var Customer = rdb.table('_customer');Customer.primaryColumn('cId').guid().as('id');Customer.column('cName').string().as('name');Customer.column('cBalance').numeric().as('balance');Customer.column('cRegdate').date().as('registeredDate');Customer.column('cIsActive').boolean().as('isActive');Customer.column('cPicture').binary().as('picture');var db = rdb('postgres://postgres:postgres@localhost/test');db.transaction() .then(getById) .then(printCustomer) .then(rdb.commit) .then(null, rdb.rollback) .then(onOk, onFailed);function getById() { return Customer.getById('a0000000-0000-0000-0000-000000000000');}function printCustomer(customer) { var format = 'Customer Id: %s, name: %s, Balance: %s, Registered Date: %s, Is Active: %s, Picture: %s'; var args = [format, customer.id, customer.name, customer.balance, customer.registeredDate, customer.isActive, customer.picture]; console.log.apply(null,args);}function onOk() { console.log('Success'); console.log('Waiting for connection pool to teardown....');}function onFailed(err) { console.log('Rollback'); console.log(err);}
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