When your Grails model gets a bit complex, you may find yourself with conflicts in your domain classes associations (I like some parts of GORM, such as dynamic finders, but I think the relationships stuff could be improved). In my case, I usually end up finding problems when I mix […]

So let’s say that in Groovy you find yourself wanting to do something like this: [ ‘name’, ‘lastName’, ‘address.street’].collect { propertyToResolve -> [(propertyToResolve): user[property] } You will find that the automatic getter (using it with the map syntax or as a property doesn’t change anything) won’t parse the argument to […]

Introduction and usage example of Grails Plugin Maven Deployer, a small scripting tool I created. The tool allows you to publish a plugin in a self-hosted maven repo by packaging it as a JAR file.

A Grails plugin to inject the auto-timestamp properties using a configurable, joda-time compatible AST transform that can be used both by a project and by other plugins.

I was playing around with Grails and JSON and came up with a small method to convert a given collection of objects into JSON (typically, domain class objects, but it would work with anything). It’s nothing new or fancy, but maybe usefull for anybody who is starting to explore Grails […]

In modern versions of Grails, you can use the Groovy annotation EqualsAndHashCode for generating the equals and hashCode methods of your domain classes using an AST transformation, but if you are in any 1.x.x Grails version (that uses a Groovy version prior to 1.8.0), you won’t be able to use […]

One of the things that opens the gate to truly code reusation in Bash is, in my opinion, the hability of evaluate and set variables in a dynamic way. By dynamic, I mean that the variable name is constructed dynamically, or passed as a parameter, and ends up being in […]

And with that huge title 😀 , I want to talk about a little technique that I like to use in Groovy by taking advantage of the method parameters with default values feature. By method configuration and method body I am refering to two typical parts of a business logic […]