// Class
class Book {

	static hasMany = [:authors => Author]

	Author author
	String name
	String email

	static constraints = {
		name   :validate => { it.size() > 30 }
		email  :email => true, :blank => false
	}
	String toString() { "$id: $name" }
}

// Aspect
aspect Book {
	declare @Entity Book.class
}

// Aspect
aspect Lister<T> {

	in template

	declare static List<T> *.list(int max=-1, int offset=0) {
		template.list(T, max, offset) as List<T>
	}
	declare T *.get(Long id) {
		template.get(id) as T
	}
	declare T findBy/s/() {
		/* return */ template.execQuery(s.convertToQuery())
	}
}

// DI
objects {
	SessionFactory sessionFactory {
		wire = :byType
	}

	HibernateTemplate template {
		sessionFactory = sessionFactory
	}
}