Why do I get a “Null value was assigned to a property of primitive type setter of” error message when using HibernateCriteriaBuilder in Grails

Question

I get the following error when using a primitive attribute in my grails domain object:

Null value was assigned to a property of primitive type setter of MyDomain         


        

Answer 1

Change the parameter type from primitive to Object and put a null check in the setter. See example below

public void setPhoneNumber(Long phoneNumber) {
    if (phoneNumber != null)
        this.phoneNumber = phoneNumber;
    else
        this.extension = 0l;
}