sequelize-dm/lib/dialects/sqlite/index.js

Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.

'use strict';

const _ = require('lodash');
const { AbstractDialect } = require('../abstract');
const ConnectionManager = require('./connection-manager');
const Query = require('./query');
const QueryGenerator = require('./query-generator');
const DataTypes = require('../../data-types').sqlite;
const { SQLiteQueryInterface } = require('./query-interface');

class SqliteDialect extends AbstractDialect {
  static supports = _.merge(_.cloneDeep(AbstractDialect.supports), {
    DEFAULT: false,
    'DEFAULT VALUES': true,
    'UNION ALL': false,
    'RIGHT JOIN': false,
    inserts: {
      ignoreDuplicates: ' OR IGNORE',
      updateOnDuplicate: ' ON CONFLICT DO UPDATE SET',
      conflictFields: true,
    },
    index: {
      using: false,
      where: true,
      functionBased: true,
    },
    transactionOptions: {
      type: true,
    },
    constraints: {
      addConstraint: false,
      dropConstraint: false,
    },
    groupedLimit: false,
    JSON: true,
  });

  constructor(sequelize) {
    super();
    this.sequelize = sequelize;
    this.connectionManager = new ConnectionManager(this, sequelize);
    this.queryGenerator = new QueryGenerator({
      _dialect: this,
      sequelize,
    });

    this.queryInterface = new SQLiteQueryInterface(
      sequelize,
      this.queryGenerator,
    );
  }
}

SqliteDialect.prototype.defaultVersion = '3.8.0'; // minimum supported version
SqliteDialect.prototype.Query = Query;
SqliteDialect.prototype.DataTypes = DataTypes;
SqliteDialect.prototype.name = 'sqlite';
SqliteDialect.prototype.TICK_CHAR = '`';
SqliteDialect.prototype.TICK_CHAR_LEFT = SqliteDialect.prototype.TICK_CHAR;
SqliteDialect.prototype.TICK_CHAR_RIGHT = SqliteDialect.prototype.TICK_CHAR;

module.exports = SqliteDialect;
module.exports.SqliteDialect = SqliteDialect;
module.exports.default = SqliteDialect;