sqlite-js-wrapper

sqlite-js-wrapper

Tiny SQLite helper library built on top of HTML5/Web SQL (DRAFT) API.

This library helps you to build sqlite query in an eloquent way.

Supported platforms

Browser	Mobile	NodeJS
Any js library supports ES6 module (React, VueJS...)	React Native, Cordova (JS based others)	Try and inform me please :)

Why i need this tiny library

I need to use sqlite in a project and i did some research. I found some libraries, for example websqlite and TypeORM.

TypeORM has model support and more complex than i need (at least for my project). Also force you to use typescript. Websqlite also is a good library but i want to query sqlite database and get result format in a different way (Promises and result as object). At the same time i want the library to be handy and easy to read. That's why i decided to implement one.

This is a fast imlementation took one workday. So if you commit bugs or issues i will be grateful

Hope you enjoy it!

Installation

Using npm:

npm install --save sqlite-js-wrapper

Using yarn

yarn add sqlite-js-wrapper

Features

It supports various sqlite syntax. Here is the feature list

Feature	Description
query	Executes single raw query
queryMulti	Executes multiple raw query
sqlBatch	Executes multiple raw query using plugin-specific API calls support
insert	Insert single object or array of objects to the table given
createTable	Creates table using column argument and returns true or throws error
dropTable	Drops table if exists given as first argument and returns true or throws error
isTableExists	Check if a table exists or not
table	The magic! Takes table name as an argument then let you to chain with other functions such as (select, delete, update, where, whereIn, whereRaw, whereBetween, distinct, join, orderBy, groupBy, having)

Chaining functions

Function	Description
select	Return the data from the query builder. Arguments: fields (string default is '*'. It takes comma separated string), limit (int), offset (int)
delete	Deletes the records. Arguments: limit (int), offset (int)
update	Updates the matching records. Arguments: data (object), limit (int), offset (int)
where	Adds where condition to the query builder. Arguments: field (string), value, operator (string default is '=' example: =,<,>, like ...), andOr (string default is 'AND')
whereIn	Adds where condition to filter the records that matches with the array given. Arguments: field (string), valueArray, andOr (string default is 'AND')
whereBetween	Adds where condition to filter the records that between the array given. Arguments: field (string), valueArray (two item only), andOr (string default is 'AND')
whereRaw	Adds raw where condition to write complex where clause. Arguments: condition (string), andOr (string default is 'AND')
distinct	Removes duplicates from result set. Takes no argument
join	Joins the table to another. This is a little more complex. See the examples below Arguments: joinTable (string), joinTableAlias (string), joinCallback (function (j){}), joinType (string default is 'INNER')
orderBy	Adds order by clause to the query. It can be used multiple times Arguments: field (string), type (string default is 'ASC' values are ASC, DESC)
groupBy	Groups the query using the array given. Arguments: groupByArray (array of string)
having	Adds raw having clause to a grouped query. Arguments: havingStr (string)
exists	Check if records exists or not

createTable->columns supported properties

key	value	required
columnName	string	✅
dataType	string (null, integer, real, text, blob)
primaryKey	boolean
autoIncrement	boolean
notNull	boolean
unique	boolean
default	string
option	string (extra attribs such as "CHECK" when needed )

Examples

First create database in usual way

const db = SQLite.openDatabase(
    { name: 'test.db', location: 'default' },
    succ => console.log('DB Created: '),
    err => console.log('Err:', err)
  );

Init wrapper using database object:

const sw = new SQLiteWrapper(db);

Drop old tables if exists

sw.dropTable('user');
sw.dropTable('score');

Create user and score tables

sw.createTable('user', [
{
  columnName: 'id',
  dataType: 'integer',
  primaryKey: true,
  autoIncrement: true,
},
{
  columnName: 'name',
  dataType: 'text',
  notNull: true,
  unique: true,
},
{
  columnName: 'team',
  dataType: 'text',
  default: 'gala',
  notNull: true,
},
]);

// Result is: true

sw.createTable('score', [
{
  columnName: 'id',
  dataType: 'integer',
  primaryKey: true,
  autoIncrement: true,
},
{
  columnName: 'game',
  dataType: 'integer',
  notNull: true,
},
{
  columnName: 'userId',
  dataType: 'integer',
  notNull: true,
},
{
  columnName: 'score',
  dataType: 'integer',
  notNull: true,
},
]);

// Result is: true

Sample data

const users = [
    { id: 1, name: 'user1' },
    { id: 2, name: 'user2', team: 'madrid' },
    { id: 3, name: 'user3', team: 'barca' },
    { id: 4, name: 'user4', team: 'arsenal' },
    { id: 5, name: 'user5', team: 'barca' },
    { id: 6, name: 'user6', team: 'gala' },
];

const scores = [
    { game: 1, userId: 1, score: 5 },
    { game: 2, userId: 2, score: 2 },
    { game: 3, userId: 3, score: 4 },
    { game: 4, userId: 1, score: 8 },
    { game: 1, userId: 2, score: 3 },
    { game: 2, userId: 4, score: 1 },
    { game: 3, userId: 2, score: 2 },
    { game: 4, userId: 3, score: 4 },
    { game: 5, userId: 1, score: 3 },
    { game: 5, userId: 2, score: 1 },
    { game: 6, userId: 3, score: 5 },
    { game: 6, userId: 4, score: 2 },
    { game: 7, userId: 3, score: 2 },
    { game: 7, userId: 1, score: 1 },
    { game: 8, userId: 2, score: 4 },
    { game: 8, userId: 4, score: 3 },
];

Insert data to tables

sw.insert('user', users);

// Result: true

sw.insert('score', scores);

// Result: true

Insert single record and get insertId

const { insertId } = sw.insert('score', { game: 9, userId: 1, score: 4 });

// Result: InsertId: 17

Update

const rowsAffected = sw
.table('user')
.where('team', 'gala')
.update({ team: 'galatasaray' });

// rowsAffected: 2

Delete records id between 4, 6

const rowsDeleted = sw
.table('user')
.whereBetween('id', [4, 6])
.delete();

// rowsDeleted: 3

Select all records from user table

sw.table('user').select()

/*
  Result:
  {
     "data":[
        {
           "team":"galatasaray",
           "name":"user1",
           "id":1
        },
        {
           "team":"madrid",
           "name":"user2",
           "id":2
        },
        {
           "team":"barca",
           "name":"user3",
           "id":3
        },
        {
           "team":"arsenal",
           "name":"user4",
           "id":4
        },
        {
           "team":"barca",
           "name":"user5",
           "id":5
        },
        {
           "team":"galatasaray",
           "name":"user6",
           "id":6
        }
     ],
     "rowsAffected":0,
     "length":6
  }
 */

Select team names and remove duplicates

const teams = sw
  .table('user')
  .distinct()
  .select('team');
const teamArray = teams.data.map(x => x.team)

// Result: ["galatasaray", "madrid", "barca", "arsenal"]

Complex query using join, where, groupBy, having, orderBy

This query return the users and total scores with user name sorted descendant by sumOfScore where sums bigger than 12 and team is not equal to arsenal

const maxScoreList = sw
  .table('score', 'S')
  .join('user', 'U', j => {
    j.on('U.id', 'S.userId');
    j.whereIn('U.id', [1, 2, 3, 4, 5]);
  })
  .where('U.team', 'arsenal', '!=')
  .groupBy(['userId'])
  .having('sumOfScore > 12')
  .orderBy('sumOfScore', 'DESC')
  .select('U.name, SUM(S.score) as sumOfScore');

/*
  Result:
  {
     "data":[
        {
           "sumOfScore":21,
           "name":"user1"
        },
        {
           "sumOfScore":15,
           "name":"user3"
        }
     ],
     "rowsAffected":0,
     "length":2
  } 
 */

Processing results

There are 2 ways to get the results from functions

• First is using await/async

const records = await sw.table('user').select();

• Second is using .then()

sw.table('score')
    .select()
    .then(result => console.log(result));

Error handling

• Using await/async

try {
  await sw.table('tableNotExists').select();
} catch (err) {
  console.log(err);
}

• Using .then()

sw.table('tableNotExists')
    .select()
    .then(() => {})
    .catch(err => console.log(err));

Feedback

All bugs, feature requests, feedback, etc., are welcome.

Donation

If this project help you reduce time to develop, you can give me a cup of coffee ☕️ :)