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

@Column(name ="LEAD_ID")
private int leadId; 

Change to

@Column(name ="LEAD_ID")
private Integer leadId;