org.apache.openjpa.persistence
Class JPAFacadeHelper

java.lang.Object
  org.apache.openjpa.persistence.JPAFacadeHelper

public class JPAFacadeHelper
extends Object

Helper class for switching between OpenJPA's JPA facade and the underlying Broker kernel.

Since:

1.0.0

Field Summary

static String	EM_KEY
static String	EMF_KEY

Constructor Summary

JPAFacadeHelper()

Method Summary

static Object	fromOpenJPAObjectId(Object oid) Translate from a OpenJPA identity object to a Persistence one.
static Class	fromOpenJPAObjectIdClass(Class oidClass) Translate from a OpenJPA identity class to a native one.
static ClassMetaData	getMetaData(EntityManager em, Class cls) Returns the ClassMetaData associated with the persistent type cls.
static ClassMetaData	getMetaData(EntityManagerFactory emf, Class cls) Returns the ClassMetaData associated with the persistent type cls.
static ClassMetaData	getMetaData(Object o) Returns the ClassMetaData associated with the persistent object o.
static Broker	toBroker(EntityManager em) Return the underlying broker for the given entity manager facade.
static BrokerFactory	toBrokerFactory(EntityManagerFactory emf) Return the underlying broker factory for the given persistence manager factory facade.
static OpenJPAEntityManager	toEntityManager(Broker broker) Return a persistence manager facade to the given broker retaining previously associated persistence context type.
static OpenJPAEntityManagerFactory	toEntityManagerFactory(BrokerFactory factory)
static Object	toOpenJPAObjectId(ClassMetaData meta, Object oid) Translate from a Persistence identity object to a OpenJPA one.
static Collection<Object>	toOpenJPAObjectIds(ClassMetaData meta, Collection<Object> oids) Return a collection of OpenJPA oids for the given native oid collection.
static Object[]	toOpenJPAObjectIds(ClassMetaData meta, Object... oids) Return an array of OpenJPA oids for the given native oid array.

Methods inherited from class java.lang.Object

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

Field Detail

EM_KEY

public static final String EM_KEY

See Also:

Constant Field Values

EMF_KEY

public static final String EMF_KEY

See Also:

Constant Field Values

Constructor Detail

JPAFacadeHelper

public JPAFacadeHelper()

Method Detail

toEntityManagerFactory

public static OpenJPAEntityManagerFactory toEntityManagerFactory(BrokerFactory factory)

toBrokerFactory

public static BrokerFactory toBrokerFactory(EntityManagerFactory emf)

Return the underlying broker factory for the given persistence manager factory facade.

toEntityManager

public static OpenJPAEntityManager toEntityManager(Broker broker)

Return a persistence manager facade to the given broker retaining previously associated persistence context type.

toBroker

public static Broker toBroker(EntityManager em)

Return the underlying broker for the given entity manager facade.

getMetaData

public static ClassMetaData getMetaData(Object o)

Returns the ClassMetaData associated with the persistent object o.

getMetaData

public static ClassMetaData getMetaData(EntityManager em,
                                        Class cls)

Returns the ClassMetaData associated with the persistent type cls.

getMetaData

public static ClassMetaData getMetaData(EntityManagerFactory emf,
                                        Class cls)

Returns the ClassMetaData associated with the persistent type cls.

fromOpenJPAObjectId

public static Object fromOpenJPAObjectId(Object oid)

Translate from a OpenJPA identity object to a Persistence one.

toOpenJPAObjectId

public static Object toOpenJPAObjectId(ClassMetaData meta,
                                       Object oid)

Translate from a Persistence identity object to a OpenJPA one. If the provided oid isn't of the expected type a UserException will be thrown.

toOpenJPAObjectIds

public static Object[] toOpenJPAObjectIds(ClassMetaData meta,
                                          Object... oids)

Return an array of OpenJPA oids for the given native oid array.

toOpenJPAObjectIds

public static Collection<Object> toOpenJPAObjectIds(ClassMetaData meta,
                                                    Collection<Object> oids)

Return a collection of OpenJPA oids for the given native oid collection.

fromOpenJPAObjectIdClass

public static Class fromOpenJPAObjectIdClass(Class oidClass)

Translate from a OpenJPA identity class to a native one.