org.apache.camel.component.jpa

Class JpaHelper

java.lang.Object

org.apache.camel.component.jpa.JpaHelper

public final class JpaHelper
extends Object

Helper for JPA.

Method Summary

Modifier and Type	Method and Description
static javax.persistence.EntityManager	getTargetEntityManager(org.apache.camel.Exchange exchange, javax.persistence.EntityManagerFactory entityManagerFactory, boolean usePassedInEntityManager, boolean useSharedEntityManager, boolean allowRecreate) Gets or creates an EntityManager to use.

Methods inherited from class java.lang.Object

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

Method Detail

getTargetEntityManager

public static javax.persistence.EntityManager getTargetEntityManager(org.apache.camel.Exchange exchange,
                                                                     javax.persistence.EntityManagerFactory entityManagerFactory,
                                                                     boolean usePassedInEntityManager,
                                                                     boolean useSharedEntityManager,
                                                                     boolean allowRecreate)

Gets or creates an EntityManager to use.

Parameters:

exchange - the current exchange, or null if no exchange

entityManagerFactory - the entity manager factory (mandatory)

usePassedInEntityManager - whether to use an existing EntityManager which has been stored on the exchange in the header with key JpaConstants.ENTITY_MANAGER

useSharedEntityManager - whether to use SharedEntityManagerCreator if not already passed in

Returns:

the entity manager (is never null)