Is there a 'contains' functionality on a collection of ObjectId property of a domain object for withCriteria?

Question

I have a Subscription domain object which has a List of ObjectId as one of its properties, say 'subscribed'. I'm on Grails 2.1.2 and MongoDB.

class Subscription {
    ObjectId id
    List<ObjectId> subscribers = [] as List<ObjectId>

    static mapWith = "mongo"
}

I'm looking for something like this

def c = Subscription.withCriteria {
    contains("subscribers", specificId)
}

Is there a way to do this?

Note: I'm aware of this very same question but provided answer to that question doesn't work for a property which is of type List of ObjectId.

Answer 1

See grails criteria docs. Try to use like this:

def c = Subscription.withCriteria {
    subscribers{
        eq("id",specificId)
    }
}