com.googlecode.jinahya.persistence

Class AbstractEntityFacade<E,I>

java.lang.Object

com.googlecode.jinahya.persistence.AbstractEntityFacade<E,I>

Type Parameters:

E - entity instance type parameter

I - primary key type parameter

All Implemented Interfaces:

EntityFacade<E,I>

public abstract class AbstractEntityFacade<E,I>
extends Object
implements EntityFacade<E,I>

Abstract implementation.

Author:

Jin Kwon

Field Summary

Fields

Modifier and Type	Field and Description
protected Class<E>	entityClass entity class.

Constructor Summary

Constructors

Constructor and Description
AbstractEntityFacade(Class<E> entityClass) Creates a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
E	find(I primaryKey)
protected abstract javax.persistence.EntityManager	getEntityManager() Returns entity manager.
E	merge(E entityInstance)
E	persist(E entityInstance)
E	remove(I primaryKey)

Methods inherited from class java.lang.Object

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

Field Detail

entityClass

protected final Class<E> entityClass

entity class.

Constructor Detail

AbstractEntityFacade

public AbstractEntityFacade(Class<E> entityClass)

Creates a new instance.

Parameters:

entityClass - entity class

Method Detail

find

public E find(I primaryKey)

Specified by:

find in interface EntityFacade<E,I>

Parameters:

primaryKey - primary key

Returns:

found entity instance or null if not found

persist

public E persist(E entityInstance)

Specified by:

persist in interface EntityFacade<E,I>

Parameters:

entityInstance - entity instance to persist

merge

public E merge(E entityInstance)

Specified by:

merge in interface EntityFacade<E,I>

Parameters:

entityInstance - entity instance to merge

Returns:

the merged instance

remove

public E remove(I primaryKey)

Specified by:

remove in interface EntityFacade<E,I>

Parameters:

primaryKey - primary key

Returns:

removed entity instance or null if not found

getEntityManager

protected abstract javax.persistence.EntityManager getEntityManager()

Returns entity manager.

Returns:

entity manager