@postgresrest/node

This is a nodejs' client to use pRest api.

Resume

• Introduction
  • Motivation
  • How Install / Setup
• Basic API
  • databases()
  • schemas()
  • tables()
  • show()
• Table API
  • What is a TableConnector entity?
  • query()

---

Introduction

Motivation

pRest is a GoLang service that's simplify and accelerate development, instant, realtime, high-performance on any Postgres application, existing or new. To extends this functionalities we decided to a client in javascript/typescript to make easiest the life of someone that wants to consume pRest api across javascript applications.

How Install

You can install using NPM npm install @postgresrest/node --save

or yarn yarn add @postgresrest/node -S

After it, you should create a instance of PRestAPI:

import PRestApi from '@postgresrest/node';

const cli = new PRestApi('myhost');

or if you want you can use custom fetcher with any fetch tool you'd like:

import axios from 'axios';

const fetcher = (uri, method) => axios[method](uri).then(({data}) => data);
const cli = new PRestApi('myhost', fetcher);

---

Basic API

You can find all routes that we consume in this section here

databases(): Promise<PRestDatabase[]>

cli.databases() will reflect the /databases pRest endpoint. It will return all databases from your Postgres instance, you are able to use PRestDatabase type too (if you are in a Typescript environment).

schemas(): Promise<PRestSchema[]>

cli.schemas() will reflect the /schemas pRest endpoint. It will return all schemas from your Postgres instance, you are able to use PRestSchema type too (if you are in a Typescript environment).

tables(): Promise<PRestTable[]>

cli.tables() will reflect the /tables pRest endpoint. It will return all tables from your Postgres instance, you are able to use PRestTable type too (if you are in a Typescript environment).

tablesByDBInSchema(...entries: string[]): Promise<PRestTable[]>

It will reflect the /tables pRest endpoint. It will return all tables from your Postgres instance, you are able to use PRestTable type too (if you are in a Typescript environment).

Usage sample:

const structure = await cli.tablesByDBInSchema('db', 'schema', 'table');
const structure = await cli.tablesByDBInSchema('db.schema.table');

show(...entries: string[]): Promise<PRestTableShowItem[]>

It will reflect the /show/DATABASE/SCHEMA/TABLE pRest endpoint. It will return the structure of a specific table in a specific database and schema, you are able to use PRestTableShowItem type too (if you are in a Typescript environment).

Usage sample:

const structure = await cli.show('db', 'schema', 'table');
const structure = await cli.show('db.schema.table');

tableConnection(...entries: string[]): TableConnector

It will return a [TableConnector] instance to manipulate table actions.

Usage sample:

const structure = cli.tableConnection('db', 'schema', 'table');
const structure = cli.tableConnection('db.schema.table');

---

Table API

What is a TableConnector entity?

To simplify the API consume, we created a entity to control query and batches by a table namespace. This object could be retrived using the method tableConnection

query

It will reflect /DATABASE/SCHEMA/TABLE prest endpoint.

Usage sample:

const data = await cli.tableConnection('db', 'schema', 'table').query();

create

It will reflect /DATABASE/SCHEMA/TABLE prest endpoint with POST method

Usage sample:

const data = await cli.tableConnection('db', 'schema', 'table').create({ foo: 'bar' });

update

It will reflect /DATABASE/SCHEMA/TABLE prest endpoint with PATCH method

Usage sample:

const data = await cli.tableConnection('db', 'schema', 'table').update('myid', { foo: 'fizz' });

delete

It will reflect /DATABASE/SCHEMA/TABLE prest endpoint with DELETE method

Usage sample:

const data = await cli.tableConnection('db', 'schema', 'table').delete('myid');

---

Ideas

Add and PRestOptions structure to PRestApi object, to automatic add some kind of options like: _renderer=xml

Create a PRestQuery to format this query statements (https://docs.postgres.rest/query-statements) in a simple structure:

const query = new PRestQuery();
query.eq('x');
query.like('x');
query.pagination({ size: 2, page: 1 });

cli.query(query) // ?$eq=x&$like=x&_page=1&_page_size=2

Create a .view() method to reflect .query() method (abstract it)

Create a .batch() method

Send this Readme to a more complete documentation (remove actual typedoc)