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kevinhooke/gist:89f2e10c13dce8a32ed4

Created July 2, 2015 20:58
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JPA create a copy of existing entity using detach()
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gistfile1.txt
ExampleA a = new ExampleA();
em.getTransaction().begin();
em.persist(a);
em.getTransaction().commit();
// ...
em.getTransaction().begin();
em.detach(a);
a.setId(null);
em.persist(a);
em.getTransaction().commit();
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