Q: UserType nullSafeGet and nullSafeSet migration Does anyone know how to migrate code from the deprecated Hibernate 3 nullSafeGet and nullSafeSet methods to the newer Hibernate 4 nullSafeGet and nullSafeSet methods that take a SessionImplementor argument? 
I suppose I can simply call the older (deprecated) methods from the newer ones, ignoring the SessionImplementor argument. But I am not sure what the implication of that choice would be. In the book "Hibernate Recipes" on page 90, the author(s) ignore the SessionImplementor argument.
Relevant Hibernate documentation of this change
Migration guide detailing that the change is happening in v4.0
Hibernate team JIRA report for this change

A: The same strategy (ignoring) is  also applied in org.hibernate.type.EnumType.

A: SessionImplementor is there if you need it. Otherwise ignore it
