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grailsgroovyenums

Correct way to use Enums in Groovy and Grails

I want to create a number of global enums that are for use throughout my entire application.

I created a groovy file called enums which looks something like this:

class Enums {
    enum GameType{
        Game1,
        Game2,
        Game3
        Game4
        Game5
    }

    enum Enum2{
        Type1,
        Type2,
        Type3
    }

}

The first enum seems to work fine, but when I try to use the second one I get an 'unable to resolve class' error. What is the correct way to work with Enums in Grails?

Solution

  • Each enumeration should be in it's own class located under in src/groovy. I would also suggest using a package for them. Your example should be

    src/groovy/my/example/GameType.groovy:

    package my.example
enum GameType{
  Game1,
  Game2,
  Game3,
  Game4,
  Game5
}

    src/groovy/my/example/Enum2.groovy:

    package my.example
enum Enum2 {
  Type1,
  Type2,
  Type3
}