Currently, when a composite value is compared to null by either ComponentType#isEqual implementation, each value in the empty composite it compared to null.

If the empty composite has a primitive attribute, ComponentType#isEqual will always return false (because a primitive attribute cannot be null).

In addition, if the component is mapped with a parent (@Parent), and the parent is non-null when the empty composite is instantiated by ComponentType#instantiate(Object parent, SharedSessionContractImplementor session), then the parent is injected into the empty composite. When ComponentType#isEqual is used to check if the empty composite with non-null parent is equivalent to null, false will be returned because the parent will be compared with null.