If a constraint mapping XML defines all the constraint info, then PredefinedScopeHibernateValidatorFactory will miss this information as the classes defined in the XML are not passed in the HibernateSpecificConfig#getBeanClassesToInitialize().

Let’s add the classes present only in the XML to the list of bean classes to initialize.

This will also mean that the predefined list of enabled built-in constraints may need to be extended, as the predefined configuration does not yet know about all the XML metadata.