Override getter and setter in grails domain class for relation

Question

How to override getter and setter for field being a relation one-to-many in grails domain class? I know how to override getters and setters for fields being an single Object

Answer 1

Need the reference Set<Title> titles.

class Entity {
    Set<Title> titles

    static hasMany = [
        titles: Title
    ]

    public Set<Title> getTitles() {
        if(titles == null)
            return null;
        return titles.findAll { r -> r.isActive == true }
    }

    public void setTitles(Set<Title> s) {
        titles = s
    }
}