Disable chaching in JPA (eclipselink)
- by James
Hi,
I want to use JPA (eclipselink) to get data from my database. The database is changed by a number of other sources and I therefore want to go back to the database for every find I execute. I have read a number of posts on disabling the cache but this does not seem to be working. Any ideas?
I am trying to execute the following code:
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("default");
EntityManager em = entityManagerFactory.createEntityManager();
MyLocation one = em.createNamedQuery("MyLocation.findMyLoc").getResultList().get(0);
MyLocation two = em.createNamedQuery("MyLocation.findMyLoc").getResultList().get(0);
System.out.println(one==two);
one==two is true while I want it to be false.
I have tried adding each/all the following to my persistence.xml
<property name="eclipselink.cache.shared.default" value="false"/>
<property name="eclipselink.cache.size.default" value="0"/>
<property name="eclipselink.cache.type.default" value="None"/>
I have also tried adding the @Cache annotation to the Entity itself:
@Cache(
type=CacheType.NONE, // Cache nothing
expiry=0,
alwaysRefresh=true
)
Am I misunderstanding something?
Thank you,
James
