withCriteria two level deep association eager fetch grails

Question

I\'d like to eager load a structure, two levels deep in an association chain. Something along the lines of:

class TopLevel {
    String name

    LevelOne l         


        

Answer 1

Got it working. Here's the secret sauce:

def result = TopLevel.withCriteria {
    eq('name', 'test')
    fetchMode 'levelOne', FetchMode.JOIN
    fetchMode 'levelOne.levelTwo', FetchMode.JOIN
    fetchMode 'levelOne.levelTwo.levelThree', FetchMode.JOIN
}