SFDatabase-js
SFDatabase-js is a database library that can help you build a SQL Query and execute it to the server from Nodejs or local browser with WebSQL. It will fallback to IndexedDB or LocalStorage for saving the database if running on browser. Check the example here.
Getting started for Node.js
First, you should install mysqljs and sfdatabase-js
$ npm i sfdatabase-js
# Optional if you want to use MySQL or SQLite for your database
$ npm i mysqljs/mysql
$ npm i sqlite3
Sample Usage
var MyDB = new SFDatabase('MyDB', {
// For MySQL on Node.js
mysql: true,
host:'localhost',
user:'root',
password:'',
// For SQLite on Node.js
sqlite3: new (require('sqlite3').Database)('./test.db'),
// Your database table's structure [optional]
structure:{/*
TableName:{
id: ['integer', 'primary', 'autoincrement'],
ColumnName: 'integer',
},
*/},
hideInitialization:true, // Keep silent after connected to DB
// Debug SQL query if needed
debug(query, data){
console.log("Query: "+query, data);
},
onError: console.error,
// You can also preprocess your data before or after the SQL Query is executed
// This is optional
preprocessTable: {
test:{ // Table name
data:{ // Column name
set:JSON.stringify, // On insert or update
get:JSON.parse // On select
}
}
},
onInit(){
console.log("Database was connected!");
}
});
Getting started for Browser
Add this into your HTML's header.
<script src="https://cdn.jsdelivr.net/npm/sfdatabase-js@1.3.2/dist/SFDatabase.min.js"></script>
Before you use the database, you need to create the table first.
// Let's begin the initialization
var MyDB = new SFDatabase('MyDBName', {
// Set this to true if you want to use WebSQL
// Only some browser may support WebSQL
// Set to false if you want to use IndexedDB
websql: false,
// When you have changed the DBStructure you need to update this version
idbVersion:1,
// Your database table's structure
structure:{
// TableName:{ TableStructure },
UsersInfo:{
$user_id: ['number', 'unique'], // indexed user_id
$username: 'text', // indexed username
name: 'text',
// When using IndexedDB you can store almost any data types
// To improve performance and memory you shouldn't store a big Object
// instead you should spread it as table's structure
data: 'Object', // you can store like {my: 'object'}
// When using IndexedDB you can also store data without
// declaring the structure, but declaring the table name is a must
},
Settings:{
$name: ['text', 'unique'], // indexed name
value:'text',
},
},
// Debug WebSQL query if needed
debug(query, data){
console.log("Query: "+query, data);
},
onInit(){
// MyDB_was_initialize(MyDB);
// Maybe add some feature to make something easier
Object.assign(MyDB, myFeature);
MyDB.setSettings("It's", "ready", function(){
MyDB.getSettings("It's", console.log)
});
}
});
var myFeature = {
getSettings(name, callback){
// TableName Get Column Where Success Callback
this.get('Settings', 'value', {name:name}, function(data){
callback(data);
});
},
setSettings(name, value){
let that = this;
// TableName Where Success Callback
this.has('Settings', {name:name}, function(exist){
if(exist === false)
that.insert('Settings', {name:name, value:value});
// TableName Data
else
that.update('Settings', {value:value}, {name:name});
// TableName Data Where
});
}
};
Available Function
// If you use IndexedDB you don't need .createTable
// onSuccess and onError callback are optional
// CREATE TABLE IF NOT EXISTS test (id NUMBER, name TEXT, data TEXT, words TEXT)
// createTable(tableName, structure, onSuccess, onError);
await MyDB.createTable('test', {
id:['number', 'unique'],
name:'text',
data:'text',
words:'text'
});
// INSERT INTO test (id, name, words) VALUES (?, ?, ?)
// insert(tableName, fields, onSuccess, onError);
await MyDB.insert("test", {
id:1,
name:"abc",
words:'hey'
});
// UPDATE test
// SET name = ?, data = ?
// WHERE (id = ? AND (name = ? OR name = ?))
// update(tableName, fields, where, onSuccess, onError);
await MyDB.update("test", {
// Fields
name:'zxc',
data:{
any:[1,2,3]
}
}, {
// Where
AND:{
id:1,
OR:{
name:'abc',
'name#1':'zxc'
}
}
});
// SELECT name, data FROM test
// WHERE (id = ? OR (words LIKE ?))
// LIMIT 1
// select(tableName, GetFieldsData, where, onSuccess, onError);
let result = await MyDB.select("test", ['name', 'data'], {
OR:{
id:321,
'words[~]':'hey'
},
LIMIT:1
});
// SELECT name FROM test
// WHERE (rowid = ? AND (name = ? OR name = ?) AND (id IN (?, ?, ?) OR data IS NOT NULL))
let results = await MyDB.select("test", 'name', {
AND:{
rowid:1,
OR:{name:'abc', 'name#1':'zxc'},
'OR#1':{id:[1,2,null], 'data[!]':null}
}
});
// DELETE FROM test WHERE (name LIKE ?)
// delete(tableName, where, onSuccess, onError);
await MyDB.delete("test", {'name[~]':"%xc"}, console.warn);
// TRUNCATE TABLE test
await MyDB.delete("test", 0, console.warn);
// Drop table
await MyDB.drop("test", console.warn);
Contribution
If you want to help in SFDatabase-js library, please fork this project and edit on your repository, then make a pull request to here. This library can be improved by making some code more efficient.
License
MIT license.