Grails hasMany: when child is updated, parent's version changes

Question

I am using Grails and am quite surprised by the way hasMany relationships work. I have a typical hasMany relationship where the parent id is in the child table. When I insert a child and try to save it through the parent object, the parent object's version id gets incremented. My question is: Why should the parent's version id change when there is a change only in the child object?

class Parent { 
    static hasMany = [children: child]
}

class child {
    string name 
    Parent parent
    static belongsTo = [Parent]
}

def p = Parent.get(1)
p.addToChildren(new Child(name: "Roy"))
p.save()

The version of p gets incremented from 0 to 1. Is there any way I can avoid this in Grails?

Due to the change in version ID of the parent I get a stale object exception. Any help?

Answer 1

One possibility is to disable optimistic locking for your domain object.

Update

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