MySQLWrapper

An NodeJS mysql wrapper to convert objects to the full query String! Nice to simplify the work with MySQL in a Node Enviroment

Features

• Handling Database connection
• Create Tables with all around like PK or FK
• Create Database Entrys
• Update Database Entrys
• Delete Database Entrys
• Helps you on handling with timestamps
• Provides a full in memory Caching-System
• Provides a set of callbacks to may log the infos

Usage

Establish a connection & Create a Table

const { Database } = require('@jodu555/mysqlapi');

const database = Database.createDatabase('host', 'username', 'password', 'database');
database.connect();

database.createTable('tablename', {
	options: {
		PK: 'UUID',
	},
	columName: {
		type: 'columType',
		null: false,
	},
});

Create a Table with Foreign Keys & Indexes

This Means that to the colum user_UUID will created an FK to the table users in the colum UUID

The K means that the columen name gets an index

database.createTable('services', {
	options: {
		PK: 'UUID',
		K: ['name'],
		FK: {
			user_UUID: 'users/UUID',
		},
	},
	UUID: {
		type: 'varchar(64)',
		null: false,
	},
	user_UUID: {
		type: 'varchar(64)',
		null: false,
	},
	name: 'varchar(64)',
});

Create a Table with timestamps e.g (created_at, updated_at) and softdelete with deleted_at

database.createTable('services', {
	options: {
		//Enables softdelete
		softdelete: true,
		//Enable all available timestamps
		timestamps: true,
		//Enable only one or two with default naming only deletedAt if softdelete is activ
		timestamps: {
			cratedAt: true,
			updatedAt: false,
			deletedAt: true,
		},
		//Enable only one or two with custom colum naming only deletedAt if softdelete is activ
		timestamps: {
			cratedAt: 'created_at',
			updatedAt: 'updated_at',
			deletedAt: 'deleted_at',
		},
		PK: 'UUID',
	},
	UUID: {
		type: 'varchar(64)',
		null: false,
	},
	user_UUID: {
		type: 'varchar(64)',
		null: false,
	},
	name: 'varchar(64)',
});

Work with the database in other classes | PUT this before you all over before you acces the database

const { Database } = require('@jodu555/mysqlapi');
const database = Database.getDatabase();
database. //some other function like get('tablename')

Create an Entry in a Table

//Retunrs the created Entry
database.get('tablename').create({
	columName: 'columValue',
});

Get one or more Entry/s from a Table

//Returns one row
database.get('tablename').getOne({
	searchColumName: 'searchColumValue',
});

//Returns an Array of rows
database.get('tablename').get({
	searchColumName: 'searchColumValue',
});

Update or Delete an Entry from a Table

//Returns the updated row
const update = await database.get('tablename').update(
	{
		searchColumName: 'searchColumValue',
	},
	{
		updateColumName: 'updateColumValue',
	}
);

await database.get('tablename').delete({
	searchColumName: 'searchColumValue',
});

Get Latest Entry by inseted / updated / deleted

//Returns the latest inseted / updated / deleted row

//Gets the general latest
await database.get('tablename').getLatest('inserted');
await database.get('tablename').getLatest('updated');
await database.get('tablename').getLatest('deleted');

//Gets the latest by a specific search
await database.get('tablename').getLatest('type', {
	searchColumName: 'searchColumValue',
});

Database implemented software caching usage

database.registerCache(
	'nameOfTheCache',
	{
		time: 1000 * 60 * 60, //After 1 Hour the cache gets refreshed
		calls: 3, //After 4 cause 3 is inc. calls from the cache it gets refreshed
		//These both values can work together or u only specify one of them
	},
	async (param) => {
		//Here comes the code which gets called if the cache is initialized or refreshes
		return {};
	}
);
// To get a cached value
const output = await database.getCache('nameOfTheCache').get('value');
// This returns an object with infos about the calls the cachedTime and the data
// => { data: {}, calls: 1, cached: false, cacheTime: 1638083909074 }

//To Refresh the full cache with all kinds of passed parameters use:
database.getCache('nameOfTheCache').refresh();

//If you want to only refresh the cache for specific parameters use:
database.getCache('nameOfTheCache').refresh('param1');

Database action callback usage

/**
 * IDENTIFIER Building:
    ACTION: CREATE / GET / GETONE / UPDATE / DELETE / LATEST
    Identifiers:
        tablename-ACTION : On a Specific Table a specific Action
        *-ACTION : On Any Table a specific Action
        *-* : On any Table any Action
*/

database.setCallback('IDENTIFIER', ({ tablename, action, data }) => {
	//Here you can log the data or do whatever you want to do
});

Projects using this API

• Monitoring-System
• AmazonPriceTracker
• YouTube-ChatBot
• Ez-Uploader

Todos

• [ ] Document all the public functions with jsdoc so the usage gets easier
• [x] Implement the pooling system so the connections dont fail
• [ ] Keep track of the actions obj in the thingdatabase
• [ ] Implement pseudo values which are based on actual values
• [ ] Implement multiple databases for redundancy
• [x] Add possibility to createTable to auto implement the timestamps created_AT / updated_AT
• [x] Add the possibility to activate softdelete and add in the timestamps
• [x] Add the possibility to create indexes in tables
• [x] Add the possibility to set callback functions for databse actions
• [x] Add a function to get the latest one!!
• [ ] Engineer a newer way for the callbacks
  • [ ] 🤯 Hooks: 🤯
    • [ ] BeforeHook: You can manipulate the income object
    • [ ] MiddleHook: You can manipulate the sql code which gets build by the object
    • [ ] AfterHook: You can manipulate what happens after the sql code gets runned (eg. edit something in the return)
• [ ] Add the possibility to order a get statement
• [x] ReEngineer the validation
• [x] Validate if the Validation works just fine
• [ ] Add the Validation to the documentation
• [x] Implement a whole caching system
  • [x] Add This system to the documentation
• [ ] Schema Thing
  • [ ] XOR Option : So either the username or email or both
  • [ ] Immutable values
  • [ ] Virtual Variables
  • [x] Accept a anonymous function for the default value

This Package is not finished yet. Please dont use in production environments as i do 🙄😏