Category: Java

Separate keyspaces with Spring Data Cassandra

Following on from my previous post Getting started with Spring Data Cassandra we will look into using multiple keyspaces within an application. This will be a relatively short post due to most of the content being covered in the earlier post allowing us to focus on the code needed to allow multiple keyspaces and reasons ...

Getting started with Spring Data Cassandra

I have recently been learning Apache Cassandra to use at work and I think it is about time I consolidated my experience within a blog post. But rather than focusing on how Cassandra works itself this post will look at how to use Spring Data Cassandra. I know I just said I wouldn't focus on ...

Testing a HATEOAS service

This post is a follow up post to a few that I have written recently relating to writing a HATEOAS service and handling exceptions with Spring (Applying HATEOAS to a REST API with Spring Boot and Global exception handling with @ControllerAdvice). Now that we have looked through setting up a service and how to add ...

Global exception handling with @ControllerAdvice

@ControllerAdvice is a annotation provided by Spring allowing you to write global code that can be applied to a wide range of controllers, varying from all controllers to a chosen package or even a specific annotation. In this brief tutorial we will focus on handling exceptions using @ControllerAdvice and @ExceptionHandler (@InitBinder and @ModalAttribute can also be used ...

Applying HATEOAS to a REST API with Spring Boot

HATEOAS is an acronym for Hypermedia As The Engine Of Application State. Even after expanding that for you it still might not mean a lot. HATEOAS is an extra level upon REST and is used to present information about the REST API to the client, allowing for a better understanding of the API without the ...

Default and private methods in Interfaces

In this tutorial we will look at default and private methods within interfaces. Default methods were added in Java 8 allowing methods to be added to an interface that comes with a default implementation that could be used, overridden or ignored without causing issues to existing classes that have implemented an interface. Private methods were ...

Playing around with Spring Bean Configuration

In this tutorial we will have a look at something more basic on the Spring spectrum, but as most things can sometimes be forgotten and is something that personally I have not looked at properly since switching from XML to Java configuration. The creation of beans is pretty important to the use of Spring (probably ...