deno-begin-data

Experimental port of begin/data from Node to Deno

prereq

• Deno >= 1.0.3
• Node >= 12.x and npm i -g @architect/architect

contrib

• Run the linter ./begin lint
• Run the tests ./begin test
• Add further tasks in app.arc under the @begin pragma

api

begin/data organizes collections of json documents by table and key. All documents have these properties.

writing documents with set

• set(params:{table:string, key:string}):Promise<{table:string, key:string}>
• set(params:{table:string}):Promise<{table:string, key:string}>
• set(params:object[]):Promise<{table:string, key:string}[]>

set examples

Write any valid JSON document; please ensure required table and key properties exist.

import * as data from "https://deno.begin.com/data@latest/mod.ts";

await data.set({ table: "cats", key: "sutr0", cat: true });

reading documents with get

• get(params:{table:string, key:string, begin?:string}):Promise<{table:string, key:string}> read one document
• get(params:{table:string}):Promise<{table:string, key:string}[]> paginate documents
• get(params:object[]):Promise<{table:string, key:string}[]> batch read documents

get examples

To read a single value pass named options table and key to get.

import { get } from "https://deno.begin.com/data@latest/mod.ts";

let table = "people";
let key = "brian@begin.com";
let person = await get({ table, key });
// { table: "people", key: "brian@begin.com", role: "maintainer" }

To read the first ten records in a table just pass table and no other arguments:

let firstpage = await get({ table });
// [{table, key}, {table, key}, {table, key}, ...]
let cursor = firstpage.cursor;
// Xkasskieewxx9429kdad...

Paginate the table collection by passing cursor back to get:

let secondpage = await get({ table, cursor });
// [{table, key}, {table, key}, {table, key}, ...]

async iteration with page

• page(params:{table:string, limit:number, begin?:string}):AsyncIterator<{table:string, key:string}[]>

page example

import { page } from "https://deno.begin.com/data@latest/mod.ts";

let pages = await page({ table: "accounts", limit: 5 });

for await (let account of pages) {
  console.log(account);
}

destroy documents

• destroy(params:{table:string, key:string}):Promise<void>
• destroy(params:object[]):Promise<void>

atomic counters

• incr(params:{table:string, key:string, prop:string):Promise<{table:string, key:string, prop:number}>
• decr(params:{table:string, key:string, prop:string):Promise<{table:string, key:string, prop:number}>
• count(params:{table:string}):Promise<number>