@storehouse/core

See the Documentation for more information.

Installation

$ npm install @storehouse/core

Usage (Javascript)

mapManager.js

function MapManager() {
  this._models = new Map();
}

MapManager.type = 'mapping';

MapManager.prototype.getConnection = function () {
  return this._models;
};

MapManager.prototype.closeConnection = function () {
  console.log('closeConnection');
};

MapManager.prototype.getModel = function (name) {
  if (!this._models.has(name)) {
    this._models.set(name, new Map());
  }
  return this._models.get(name);
};

module.exports = MapManager;

index.js

const Storehouse = require('@storehouse/core');
const MapManager = require('./mapManager');

/* settings */

// Define the class to use to create managers. You define multiple classes by using the method multiple times.
Storehouse.setManagerType(MapManager);
// Set the name of the default manager. That will enable the use of some methods without having to define the manager to use and fallback to the default one.
Storehouse.defaultManager = 'myManager';
// Add managers. If no default manager was previously set, the first one will be set as default.
Storehouse.add({
  myManager: {
    type: 'mapping'
  }
});

/* access data */

// insert user
const model = Storehouse.getModel('users'); // or Storehouse.getManager('myManager', 'users');
if (model) {
  model.set('id1234', { name: 'keeper' });
}
    
// get user
const mapping = Storehouse.getManager(); // or Storehouse.getManager('myManager');
if (mapping) {
  const user = mapping.getModel('users').get('id1234');
 // do something
}

/* close possible connections */

// close all connections
await Storehouse.close();

Usage (Typescript)

mapManager.ts

import { IManager } from '@storehouse/core/lib/manager';

export type ModelType<T = unknown> = Map<string, T>;

export class MapManager implements IManager {
  static readonly type = 'mapping';

  #models: Map<string, ModelType>;

  constructor() {
    this.#models = new Map<string, ModelType>();
  }

  getConnection<T = unknown>(): Map<string, ModelType<T>> {
    return <Map<string, ModelType<T>>>this.#models;
  }

  closeConnection(): void {
    console.log('closeConnection');
  }

  getModel<T>(name: string): ModelType<T> {
    if (!this.#models.has(name)) {
      this.#models.set(name, new Map<string, T>());
    }
    return <ModelType<T>>this.#models.get(name);
  }
}

index.ts

import Storehouse from '@storehouse/core';
import { MapManager, ModelType } from './mapManager'

interface User {
  name: string;
  address?: string;
}

/* settings */

// Define the class to use to create managers. You define multiple classes by using the method multiple times.
Storehouse.setManagerType(MapManager);
// Set the name of the default manager. That will enable the use of some methods without having to define the manager to use and fallback to the default one.
Storehouse.defaultManager = 'myManager';
// Add managers. If no default manager was previously set, the first one will be set as default.
Storehouse.add({
  myManager: {
    type: 'mapping'
  }
});

/* access data */

// insert user
const model = Storehouse.getModel<ModelType<User>>('users'); // or Storehouse.getManager('myManager', 'users');
if (model) {
  model.set('id1234', { name: 'keeper' });
}
    
// get user
const mapping = Storehouse.getManager<MapManager>(); // or Storehouse.getManager('myManager');
if (mapping) {
  const user = mapping.getModel<User>('users').get('id1234');
 // do something
}

/* close possible connections */

// close all connections
await Storehouse.close();

Methods

add

You add managers in the storehouse as:

Storehouse.add({
  nameOfTheManager: {
    type: MapManager
  }
});

The options to create the manager are:

• type: (string|function) The class to use to instanciate the manager. Can be a string if classes were already set with method setManagerType. If it's a string, its value should be:
  • the same as the class's static property type (if present)
  • the name of the class (default).
• [config]: (unknown)

config is optional and is sent as part of the the manager's constructor argument.

Example:

class MapManager implements IManager {
  constructor(arg: { config?: { message: string }, name?: string }) {
    console.log(arg.config?.message);
    // ...
  }
  // ...
}

addManager

You could also add a manager as:

Storehouse.addManager('myManager', new MapManager());

defaultManager

If you only have one manager or if you don't want to always precise the manager to use when it is often the same, you can define one as a default.

Storehouse.defaultManager = 'myManager';

// then
Storehouse.getManager(); // will search for 'myManager'

The default manager is always the first one added if you didn't set defaultManager manually.

hasManager

const bool = Storehouse.hasManager('myManager');

setManagerType

You set classes to use to create managers as:

Storehouse
  .setManagerType(MapManager)
  .setManagerType(AnotherClass);

If the class has a static property type, it will be stored with its value. Otherwise it will use the name of the class.

removeManager

The method returns the removed manager if there is one.

const myManager = Storehouse.removeManager('myManager');

closeAllConnections

The method call closeConnection on all of its managers.

const numberOfManagersClosed = await Storehouse.closeAllConnections();

or

const numberOfManagersClosed = await Storehouse.close();

destroy

Calls closeConnection on all of its managers and removes them.

const numberOfManagersClosed = await Storehouse.destroy();

References

• Documentation