simplest-db

Small synchronous database implementation for node.js and browsers.

1. Installation

~$ npm i -s @allnulled/simplest-db

2. How it works

This script works the same for node.js and browser.

What the script is thought for, is to be used as synchronous database for both javascript environments.

On the node.js side, it works with files and the require("fs") API.

On the browser side, it works with localStorage API.

3. Usage

3.1. Install:

In node.js you rely on require function and the node_modules of the npm.

In browser you need to import simplest-db.js by a script tag like:

<script src="/path/to/some/cdn/network/and/find/simplest-db.js"></script>

If case you use webpack or browserify or some tool to pack your browser scripts, you can use import and require syntax too with "simplest-db" parameter.

3.2. Import:

In node.js:

const SimplestDB = global.SimplestDB || require("@allnulled/simplest-db");

In browser:

const SimplestDB = window.SimplestDB;

Note: the import syntax of ES6 will also work.

3.3. Create database:

const db = SimplestDB.create({
    schema: "Unique schema id",
    attributes: { /* custom schema attributes */ },
    tables: {
        fichero: {
            attributes: { /* custom table attributes */ }.
            columns: {
                ruta: {
                    attributes: { /* custom column attributes */ },
                    is_type: "string",
                }
            }
        }
    }
});

3.4. Insert into database:

db.insert("fichero", {
    ruta: "/root/index.js",
    contenido: "console.log('hi!!!')"
});

3.5. Select from database:

db.select("fichero", f => {
    return f.ruta && f.ruta.startsWith("/root/");
});

3.6. Update from database:

db.update("fichero", 1, {
    contenido: "console.log('bye!')"
});

3.7. Delete from database:

db.delete("fichero", 1);

4. Features

Some enjoyable features:

• Fully synchronous API.
• Browser (localStorage) and node.js (require("fs")) support.

Some missing features:

• NO support for automatic column checkings, only for table checking. To do so, override validateRow method.

4.1. Extra features

Since version 1.0.3, @allnulled/simplest-db comes with 2 extra APIs: Cache API and Filesystem API.

The Filesystem API:

• Included API for files at: SimplestDB.getFS().
  • Contains a SimplestDB instance with "system" as schema (so: ./sdb_modules/system.data.json or localStorage.SDB_STORAGE_FOR_system).
  • Accepts tables: fs.
  • Accepts columns: fs.path, fs.contents, fs.metadata.

The Cache API:

• Included API for cache at: SimplestDB.getCache().
  • Contains a SimplestDB instance with "system" as schema too (so also: ./sdb_modules/system.data.json or localStorage.SDB_STORAGE_FOR_system).
  • Accepts tables: cache.
  • Accepts columns: cache.key, cache.value.

5. License

No license.

6. Why?

To have another awesome javascript database. Synchronous. Light. Simpler.