AbstractDAO.DAOCriteriaUniqueCallback (DellRoad Stuff Spring Classes 2.0.3 API)

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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 AbstractDAO.DAOCriteriaUniqueCallback()
- Method Summary
  
  Methods
  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
  - AbstractDAO.DAOCriteriaUniqueCallback
```
protected AbstractDAO.DAOCriteriaUniqueCallback()
```
- Method Detail
  - executeQuery
```
protected final T executeQuery(TypedQuery<T> query)
```
    Specified by:
    
    executeQuery in class TypedQueryCallback<T,T>

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