Friday, June 7, 2019

Running Oracle JET on Heroku with Node.js (JET Showcase)

I have implemented JET (more about Oracle JET) showcase app with data visualization components usage. This app shows historical weather data in Boston city, the dataset is taken from Kaggle. Switching years makes data visualization to change and show new data - I love how polar chat is updated. Calendar displays temperature for each day during the year using JET picto chart component:

App is deployed on Heroku and available by this URL. Heroku provides $7 per month account with analytics and better resources, but there is a free option too (it comes with sleep after 30 minutes of inactivity) - free option is good for experimentation, as for this case.

Heroku dashboard for the deployed JET app:

Free deployment comes without analytics option:

App comes with two options - Dashboard and Histogram. The dashboard allows switching between years and shows a polar chart along with daily temperature calendar:

The histogram displays the same data in a different view:

This app comes with Web Component implementation, yes Web Components are a standard feature in JET. Toolbar, where you can switch years, is implemented as Web Component:

Web Component is being used in both UIs - dashboard and histogram:

Visualization components are getting data through Knockout.JS observable variables:

Variables are initialized in JS functions:


1. Heroku deployment guide for Node.js
2. Node.js app which is deployed on Heroku - GitHub. JET content is inside the public folder. JET content is copied from JET app web folder, after running ojet build --release
3. Oracle JET app - GitHub

No comments: