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This repository is for the JavaScript client library for TerminusDB and TerminusCMS.

TerminusDB is an open-source graph database and document store. It allows you to link JSON documents in a powerful knowledge graph all through a simple document API.

It is the model-based, in-memory, and distributed knowledge graph database for hierarchical records with a git-for-data collaboration model at its heart. So many great things in a single package and a high precision datalog query language with advanced features like transactions, schema validation and unification.

For many, it serves as a headless content management system for complex enviroments with push, pull, clone, rebase and merge capabilities with immutable history and a strong schema checker that covers both the simplest and most advanced models.

Use the cloud-based studio environment to build graph data products in the cloud or in your localhost dockerized TerminusDB instances. Try it out for yourself, it's free to get started with generous limits, clone a demo project to play around.

Requirements

• Node.js version 20+ if using the TerminusDB client library as a Node.js package (might work with earlier versions too).

Installation

The TerminusDB JavaScript client library can be used either as a Node.js package or as a script that runs in the browser.

NPM Package

📝 If you don't already have Node.js installed, install it first.

To install the @terminusdb/terminusdb-client package as a dependency in an existing package, run:

$ npm install --save @terminusdb/terminusdb-client

This command updates your package.json.

Script

To use the terminusdb-client script on a webpage sourced from a CDN, add this to your HTML:

<script src="https://unpkg.com/@terminusdb/terminusdb-client/dist/terminusdb-client.min.js"></script>

Alternatively, you can download the latest terminusdb-client.min.js, add it to your sources, and use that in the <script> instead.

Usage

This example creates a simple dataProduct, starting to create a database model the schema and insert a simple document

For the full Documentation

const TerminusClient = require("@terminusdb/terminusdb-client");

// Connect and configure the TerminusClient
const client = new TerminusClient.WOQLClient('SERVER_CLOUD_URL/mycloudTeam',
                       {user:"[email protected]", organization:'mycloudTeam'})
                                            
client.setApiKey(MY_ACCESS_TOKEN)

const bankerSchema = [
   {
      "@type":"Class",
      "@id":"BankAccount",
      "@key":{
         "@type":"Hash",
         "@fields":[
            "account_id"
         ]
      },
      "account_id":"xsd:string",
      "owner":"Person",
      "balance":"xsd:decimal"
   },
   {
      "@type":"Class",
      "@id":"Person",
      "@key":{
         "@type":"Lexical",
         "@fields":[
            "name"
         ]
      },
      "name":"xsd:string"
   }
]
 
async function createDataProduct(){
    try{

        await client.createDatabase("banker", {label: "Banker Account", 
                                              comment: "Testing", schema: true})
        //add the schema documents
        await client.addDocument(bankerSchema,{"graph_type":"schema"},null,"add new schema") 
    
        const accountObj = {"@type":"BankAccount",
                            "account_id":"DBZDFGET23456",
                            "owner":{
                                "@type":"Person",
                                "name":"Tom"
                            },
                            "balance":1000
                          }

        //add a document instance
        await client.addDocument(accountObj)

        client.getDocument({"as_list":true,id:'Person/Tom'})

    }catch(err){
        console.error(err.message)
    }
  }

Options

Connections options.

To initialize TerminusDB client with custom options use

const TerminusClient = require("@terminusdb/terminusdb-client");

const client = new TerminusClient.WOQLClient("http://127.0.0.1:6363/", {
  db: "test_db",
  user: "admin",
  key: "my_secret_key",
});

API

The TerminusDB API can be found at the TerminusDB Documentation.

TerminusDB communicates using JSON over HTTP. It works with advanced datatypes including integers, floats, decimals, big integers, arbitrary precision decimals, dates and other important XML Datatypes. Math is capped at 20 digits of precision, where the core is ready to support higher precision if needed.

Report Issues

If you encounter any issues, please report it with your os and environment setup, the version that you are using, and a simple reproducible case.

If you encounter other questions, you can ask them on our Discord Server.

Contribute

📝 This project uses Husky which automatically runs lint, tests, and other scripts when you try to commit any changes to the repository. This helps us to improve each commit done to the repo and is automatically installed and configured when you do npm install

It will be nice, if you open an issue first so that we can know what is going on, then, fork this repo and push in your ideas. Do not forget to add a bit of test(s) of what value you adding.

Please check Contributing.md for more information.

Licence

The APACHE 2.0 License

Copyright (c) 2019