A Feel of Groovy DSL with an Example from Gradle

If you have used Gradle build system, probably you have already been used and benefited from the DSL capabilities of Groovy language. In this post, let us take a peek at such an example.Consider the following piece of DSL from a Gradle configuration.plugins { id 'java' } The plugins section…

IDE generated code - a good idea?

In my previous post I mentioned how pain acted as a trigger to positive action. In this post, let's analyse potential solutions to the problem I had mentioned in the above post and what can we learn from them.At the time of this incident, our team was using an…

Micronaut Service with Groovy & Spock

Micronaut supports Java, Groovy and Kotlin languages. In this post let's explore creating a service using Groovy language and Spock testing framework.If you don't have the Micronaut CLI installed, this post has the details of how to get it installed.1.1.0 is the latest version of Micronaut…

Groovy Power Assert

When I googled for 'power assert', the first result found was the JavaScript library power assert. The second link contains an interview with the author of this library. He acknowledges the inspirations from Groovy ecosystem. Borrowing good ideas from another language/ ecosystem has had positive influence on many languages.Let's…

Micronaut Configuration for CLI

In my previous post we saw how to create a service using micronaut CLI. When you create an application/project using the CLI command mn, the preferences you entered are saved in a file named 'micronaut-cli.yml', which can be found at the project top level directory. Let's take a…

Groovy Execute Around Pattern

In my previous post, we saw how languages with higher order functions make the implementation of Command Pattern very trivial. With a slight modification, we can achieve the Execute Around pattern.Suppose we have two types of transactions (atomic operations). Let's represent them using closures transactionOne and transactionTwo respectively. Now…

Command Pattern in Groovy using Closures

Command Pattern is one of the design patterns published in the GoF book. Command pattern is essentially encapsulating various types of request under a unified interface. The goal here is to minimise the coupling between executor and the client, with the system retaining the ability to evolve with new commands.…