org.yestech.lib.jpa
Class EntityManagerAdapter

java.lang.Object
  org.yestech.lib.jpa.EntityManagerAdapter

public class EntityManagerAdapter
extends java.lang.Object

A adapter for a JPA EntityManager.

Version:

$Revision: $

Author:

Artie Copeland

Nested Class Summary

static class

EntityManagerAdapter.SortOrder Defines ASC and DESC sort orders for queries.

Constructor Summary

EntityManagerAdapter()

Method Summary

long	countEntities(java.lang.Class<?> entityClass)
long	countEntitiesByAttribute(java.lang.Class<?> entityClass, java.lang.String attributeName, java.lang.Object attributeValue)
boolean	delete(java.lang.Object entity)
<T> boolean	deleteById(java.lang.Class<T> entityClass, java.lang.Object id)
<T> T	findById(java.lang.Class<T> entityClass, java.lang.Object id)
<T> java.util.List<T>	getAllEntities(java.lang.Class<T> entityClass)
<T> java.util.List<T>	getAllEntities(java.lang.Class<T> entityClass, java.lang.String orderByAttributeName, EntityManagerAdapter.SortOrder sortOrder)
javax.persistence.EntityManager	getEntityManager()
<T> T	merge(java.lang.Class<T> entityClass, T entity)
<T> T	persist(java.lang.Class<T> entityClass, T entity)
<T> T	persistOrMerge(java.lang.Class<T> entityClass, T entity) Checks to see if the entity exists.
void	setEntityManager(javax.persistence.EntityManager entityManager)

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityManagerAdapter

public EntityManagerAdapter()

Method Detail

getEntityManager

public javax.persistence.EntityManager getEntityManager()

setEntityManager

public void setEntityManager(javax.persistence.EntityManager entityManager)

findById

public <T> T findById(java.lang.Class<T> entityClass,
                      java.lang.Object id)

delete

public boolean delete(java.lang.Object entity)

deleteById

public <T> boolean deleteById(java.lang.Class<T> entityClass,
                              java.lang.Object id)

getAllEntities

public <T> java.util.List<T> getAllEntities(java.lang.Class<T> entityClass)

getAllEntities

public <T> java.util.List<T> getAllEntities(java.lang.Class<T> entityClass,
                                            java.lang.String orderByAttributeName,
                                            EntityManagerAdapter.SortOrder sortOrder)

persistOrMerge

public <T> T persistOrMerge(java.lang.Class<T> entityClass,
                            T entity)

Checks to see if the entity exists. if it foes then merge, else persist.

Type Parameters:

T -

Parameters:

entityClass -

entity -

Returns:

persist

public <T> T persist(java.lang.Class<T> entityClass,
                     T entity)

merge

public <T> T merge(java.lang.Class<T> entityClass,
                   T entity)

countEntities

public long countEntities(java.lang.Class<?> entityClass)

countEntitiesByAttribute

public long countEntitiesByAttribute(java.lang.Class<?> entityClass,
                                     java.lang.String attributeName,
                                     java.lang.Object attributeValue)