Groovy Documentation

## Package org.codehaus.groovy.grails.orm.hibernate.validation

Interface Summary
PersistentConstraint | Interface that defines a persistent constraint that evaluates the database.

Class Summary
HibernateDomainClassValidator | First checks if the Hibernate PersistentCollection instance has been initialised before bothering to cascade.
PersistentConstraintFactory | A factory that creates PersistentConstraint instances ensuring that dependencies are provided.
UniqueConstraint | A constraint that validates the uniqueness of a property (will query the database during validation process).

Groovy Documentation