HQL joins in Grails: Part Deux

Question

This is an extension of the question I asked here

I have a relationship like this

class Foo {
    static hasMany = [bars: Bar]
}

class Bar {
    // Has          


        

Answer 1

Would something like this work ?

Foo.withCriteria {
    bars {
        in('id', thing.bars.collect { it.id })
    }
}