org.dellroad.stuff.spring

Class AbstractDAO.DAOCriteriaUniqueCallback

java.lang.Object

org.dellroad.stuff.dao.QueryCallback<R>

org.dellroad.stuff.dao.TypedQueryCallback<T,R>

org.dellroad.stuff.dao.CriteriaCallback<T,T>

org.dellroad.stuff.spring.AbstractDAO.DAOCriteriaUniqueCallback

Enclosing class:

AbstractDAO<T>

protected abstract class AbstractDAO.DAOCriteriaUniqueCallback
extends CriteriaCallback<T,T>

Convenience subclass of CriteriaCallback for use by DAO subclasses when returning a single persistent instance.

Returns null if instance is not found.

Field Summary

Fields inherited from class org.dellroad.stuff.dao.CriteriaCallback

type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DAOCriteriaUniqueCallback()

Method Summary

Modifier and Type	Method and Description
protected T	executeQuery(TypedQuery<T> query)

Methods inherited from class org.dellroad.stuff.dao.CriteriaCallback

buildQuery, configureQuery

Methods inherited from class org.dellroad.stuff.dao.TypedQueryCallback

executeQuery

Methods inherited from class org.dellroad.stuff.dao.QueryCallback

query

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DAOCriteriaUniqueCallback

protected DAOCriteriaUniqueCallback()

Method Detail

executeQuery

protected final T executeQuery(TypedQuery<T> query)

Specified by:

executeQuery in class TypedQueryCallback<T,T>