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1. Hibernate - apply locks to parent tables in polymorphic queries    stackoverflow.com

I have two objects:

public class ParentObject {
 // some basic bean info
}

public class ChildObject extends ParentObject {
 // more bean info
}

2. hibernate versioning parent entity    stackoverflow.com

Consider two entities Parent and Child.

• Child is part of Parent's transient collection
• Child has a ManyToOne mapping to parent with FetchType.LAZY

3. Optimistic locking: increment the version of a parent object    forum.hibernate.org

It is not an error. It is just a question. How could i increment the version of a parent object when the version of one of its child objects is incremented. I need it to get an optimistic locking at the parent level and not just at child level. For example suppose a bill having many items. When a user modify ...