Data update services

So far, we have looked at getting the data. Let's look at some of the data modification operations, such as creating, updating, and deleting (CRUD operations).

Given the popularity of REST for cloud-based API operations, we will do our data manipulation through REST methods.

Let's pick the HSQLDB example with Hazelcast that we worked on previously in this chapter.

REST conventions

The GET method was a no-brainer, but the choice of the methods for operations such as creating, inserting, and deleting require some deliberation. We will follow the conventions as per industry guidelines:

URL	HTTP operation	Service method	Description
/product/{id}	GET	getProduct	Gets a product given an ID
/product	POST	insertProduct	Inserts the product and returns a new ID
/product/{id}	PUT	updateProduct	Updates a product for a given ID with the data in the request body
/product/{id}	DELETE	deleteProduct	Deletes the product with a provided ID

 

Let's look at the implementations in the ProductService class. We already...