jpa - Is there a way to get all managed entities from an EntityManager -

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i'm setting basic test data util , want keep track of data entitymanager handles. rather having bunch of lists each entity there way grab being managed entitymanager in 1 fell swoop?

so instead of this:

entitymanager em; list<entity1> a; list<entity2> b; ... list<entityn> n;  cleanup() {     for(entity1 e : a) em.remove(e);     for(entity2 f : b) em.remove(f);     ...     for(entityn z : n) em.remove(z); }

i want this;

entitymanager em;  cleanup() {     list<object> allentities = em.getallmanagedentities(); //<-this doesnt exist     for(object o : allentities) em.remove(o); }

not sure if possible, image manager knows managing? or, if have ideas of managing bunch of entities easily.

i think might help:

for (entitytype<?> entity : entitymanager.getmetamodel().getentities()) {     final string classname = entity.getname();     log.debug("trying select * from: " + classname);     query q = entitymanager.createquery("from " + classname + " c");     q.getresultlist().iterator();     log.debug("ok: " + classname); }

basically entitymanager::metamodel contains metadata information regarding entities managed.


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