jamesngondo2013 / diamond-api

Exercise 5

Semantic Web and Linked Data - Exercise 5

Diamond API

In this exercise we will build a HTTP API for keeping stock of our diamonds.

Exercises

1. In diamond.js, write code to create a sqlite database, with a single table that has the following fields (Explanations for all fields except id are available in the file prices-of-diamonds.html. id should be an auto-incrementing primary key.):

• id
• carat
• cut
• color
• clarity
• depth
• table
• price
• x
• y
• z

1. Write a function to load the contents of prices-of-diamonds into the database.

2. Add four methods to the express app in diamond.js to:

• GET a diamond by its id.
• POST a new diamond, which will respond with the new id of the diamond.
• PUT a new diamond at a given id.
• DELETE a diamond by its id.

1. Test the use of the API using curl.

Advanced exercises

1. Create a single HTML file to interact with the API using AJAX calls.

Note

• See the sqlite3 npm page here for an example of using a sqlite database in node.

• See the node-sqlite3 GitHub page here for more information on using sqlite in node.

• See the Express documentation here for example of using GET, POST, PUT and DELETE.

• See this blog post for example of using Curl to test an API.