nl.knowledgeplaza.util.jpa
Class EclipselinkUtil

java.lang.Object
  nl.knowledgeplaza.util.jpa.JpaUtil
      nl.knowledgeplaza.util.jpa.EclipselinkUtil

public class EclipselinkUtil
extends JpaUtil

Nested Class Summary

Nested classes/interfaces inherited from class nl.knowledgeplaza.util.jpa.JpaUtil

JpaUtil.JpaEntityInformation

Field Summary

static String

SOURCECODE_VERSION Standard variable for determining version of a class file.

Constructor Summary

EclipselinkUtil()

Method Summary

static org.eclipse.persistence.jpa.JpaEntityManager	castToJpaEntityManager(javax.persistence.EntityManager entityManager) Cast to JpaEntityManager, but first see if this is the EntityManagerExtender proxy
static Number	getNextSequenceNumberValue(javax.persistence.EntityManager entityManager, Class clazz) Allocate a new PK
static org.eclipse.persistence.sessions.Session	getSession(javax.persistence.EntityManager entityManager) get Eclipselink's session from a generic entityManager This actually is quite trivial once you got a hold of Eclipselink's JpaEntityManager, but just to be convenient we're doing here for you.
static Object	getSingleResultOrDefault(javax.persistence.Query lQuery, Object d) getSingleResult throws an exception if nothing is found.
static Object	getSingleResultOrNull(javax.persistence.Query lQuery) getSingleResult throws an exception if nothing is found.
static org.eclipse.persistence.sessions.UnitOfWork	getUnitOfWork(javax.persistence.EntityManager entityManager) get Eclipselink's UnitOfWork from a generic entityManager This actually is quite trivial once you got a hold of Eclipselink's JpaEntityManager, but just to be convenient we're doing here for you.
static void	installEventListenerRouter(javax.persistence.EntityManagerFactory lEntityManagerFactory, List<Class> entityClasses) Install the EclipselinkDescriptorEventListenerRouter class as the Eclipselink event manager and forward to local methods

Methods inherited from class nl.knowledgeplaza.util.jpa.JpaUtil

clear, clear, clear2ndLevelCache, close, close, collectEntityClasses, getJdbcConnection, mergeImmediately, mergeImmediately, persistImmediately, persistImmediately, persistImmediately, persistImmediately, removeImmediately, removeImmediately, stripEntityManager

Methods inherited from class java.lang.Object

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

Field Detail

SOURCECODE_VERSION

public static final String SOURCECODE_VERSION

Standard variable for determining version of a class file.

See Also:

Constant Field Values

Constructor Detail

EclipselinkUtil

public EclipselinkUtil()

Method Detail

getSingleResultOrNull

public static Object getSingleResultOrNull(javax.persistence.Query lQuery)

getSingleResult throws an exception if nothing is found. The method returns null in that case.

Parameters:

lQuery -

Returns:

getSingleResultOrDefault

public static Object getSingleResultOrDefault(javax.persistence.Query lQuery,
                                              Object d)

getSingleResult throws an exception if nothing is found. The method returns the default in that case.

Parameters:

lQuery -

Returns:

castToJpaEntityManager

public static org.eclipse.persistence.jpa.JpaEntityManager castToJpaEntityManager(javax.persistence.EntityManager entityManager)

Cast to JpaEntityManager, but first see if this is the EntityManagerExtender proxy

Parameters:

entityManager -

Returns:

getSession

public static org.eclipse.persistence.sessions.Session getSession(javax.persistence.EntityManager entityManager)

get Eclipselink's session from a generic entityManager This actually is quite trivial once you got a hold of Eclipselink's JpaEntityManager, but just to be convenient we're doing here for you.

Parameters:

entityManager -

Returns:

getUnitOfWork

public static org.eclipse.persistence.sessions.UnitOfWork getUnitOfWork(javax.persistence.EntityManager entityManager)

get Eclipselink's UnitOfWork from a generic entityManager This actually is quite trivial once you got a hold of Eclipselink's JpaEntityManager, but just to be convenient we're doing here for you.

Parameters:

entityManager -

Returns:

getNextSequenceNumberValue

public static Number getNextSequenceNumberValue(javax.persistence.EntityManager entityManager,
                                                Class clazz)

Allocate a new PK

Parameters:

entityManager -

clazz -

Returns:

installEventListenerRouter

public static void installEventListenerRouter(javax.persistence.EntityManagerFactory lEntityManagerFactory,
                                              List<Class> entityClasses)

Install the EclipselinkDescriptorEventListenerRouter class as the Eclipselink event manager and forward to local methods