loopback-connector-sqlite

LoopBack is a highly-extensible, open-source Node.js framework that enables you to create dynamic end-to-end REST APIs with little or no coding. It also enables you to access data from major relational databases, MongoDB, SOAP and REST APIs.

loopback-connector-sqlite is the SQLite3 connector module for loopback-datasource-juggler.

Checkout wiki pages to get updated information about this connector and how to use it with a LoopBack Application to create an API.

Basic usage

Installation

Install the module using the command below in your projects root directory:

npm i loopback-connector-sqlite

Configuration

The SQLite3 database can be configured to operate in 2 ways: with a DB file name or with an anonymous in-memory DB. This connector needs 2 configuration parameters:

• file_name(string): It can be a file at the root of the project itself if preceded by ./, e.g., ./test.sqlite3, OR, it can be an absolute file path(e.g. /home/[user]/Desktop/test.sqlite3 or C:\Users\[user]\Desktop\test.sqlite3) to generate/use the SQLite file. It can also contain null for SQLite3 in-memory usage.
• debug(boolean): Used for disabling and enabling logging.

A DataSource with basic settings can be defined as shown below:

var DataSource = require('loopback-datasource-juggler').DataSource;
var dataSource = new DataSource(require('../index'), {
  file_name: './dev.sqlite3',
  debug: false
});

Checkout examples folder to get the idea of basic usage. Run the examples from the root directory as follows:

node examples/[example_file]

NOTE: Defining Models

The model names must not be among one of the keywords used in SQLite3. Checkout all SQLite3 keywords here. It's stated there that these keywords may not be used as the names of tables, indices, columns, databases, user-defined functions, collations, virtual table modules, or any other named object.

Dependencies

• sqlite3
• loopback-connector
• debug
• async

SQLite3 configuration for tests

The .loopbackrc file holds the settings for the tests. It's in JSON format and has following content:

• For file based SQLite testing

{
  "sqlite": {
    "test": {
      "file_name": "./test.sqlite3",
      "debug": false
    }
  }
}

• For anonymous in-memory SQLite testing

{
  "sqlite": {
    "test": {
      "file_name": null,
      "debug": false
    }
  }
}

The file_name is the name of the sqlite3 DB file, which will be created, or, used if already present. The debug value is to set debugging mode.

Running the tests

• execute npm install for installing all the dependencies.
• execute npm test to run all the tests.