HibernateCallback (Spring Framework 5.2.12.RELEASE API)

Type Parameters:
T - the result type
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface HibernateCallback<T>
```
Callback interface for Hibernate code. To be used with HibernateTemplate's execution methods, often as anonymous classes within a method implementation. A typical implementation will call Session.load/find/update to perform some operations on persistent objects.
Since:
4.2
Author:
Juergen Hoeller
See Also:
HibernateTemplate, HibernateTransactionManager

- Method Summary
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  T doInHibernate(Session session)
  Gets called by HibernateTemplate.execute with an active Hibernate Session.

- Method Detail
  - doInHibernate
```
@Nullable
T doInHibernate(Session session)
         throws HibernateException
```
    Gets called by HibernateTemplate.execute with an active Hibernate Session. Does not need to care about activating or closing the Session, or handling transactions.
    Allows for returning a result object created within the callback, i.e. a domain object or a collection of domain objects. A thrown custom RuntimeException is treated as an application exception: It gets propagated to the caller of the template.
    Parameters:
    session - active Hibernate session
    Returns:
    a result object, or null if none
    Throws:
    HibernateException - if thrown by the Hibernate API
    See Also:
    HibernateTemplate.execute(org.springframework.orm.hibernate5.HibernateCallback<T>)