Persist array of JPA objects

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Persist array of JPA objects

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#1 by (1 votes)

1

I'm trying to persist a ArrayList of Entity in JPA with the following for :

EntityManagerFactory emf = Persistence.createEntityManagerFactory("PU");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();

em.persist(testCaseEntity);
em.persist(testTypeEntity);

for (TestPlanParamsSpringModel test : testPlan.getParams()) {
    em.persist(test);
}

em.getTransaction().commit();

em.close();
emf.close();

In this way only the last Entity handled by for is inserted in the database, how do I insert all of them? I've tried some solutions using em.flush() and em.clear() at the end of the loop but did not succeed.

java jpa

asked by anonymous 30.10.2015 / 13:15

1 answer

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score 1 · Accepted Answer

Possibly it gets in the way when you try to iterate through the result of the call of the testPlan.getParams () method.

remove testPlan.getParams() from within for

...
List<TestPlanParamsSpringModel> params = testPlan.getParams();
for (TestPlanParamsSpringModel test : params) {
    em.persist(test);
}
...

I believe that this will work.