Examples of org.apache.openjpa.persistence.OpenJPAEntityManager.createInstance()

Class org.apache.openjpa.persistence.OpenJPAEntityManager

Examples of org.apache.openjpa.persistence.OpenJPAEntityManager.createInstance()

org.apache.openjpa.persistence.OpenJPAEntityManager.createInstance()
Create a new instance of type cls. If cls is an interface or an abstract class whose abstract methods follow the JavaBeans convention, this method will create a concrete implementation according to the metadata that defines the class. If cls is a non-final concrete type that has metadata but does not implement {@link org.apache.openjpa.enhance.PersistenceCapable}, this method will create a subclass of the type that does implement {@link org.apache.openjpa.enhance.PersistenceCapable}, and will attempt to redefine the methods in cls to enable persistent attribute tracking. Otherwise, this will return an instance of the specified class.

        // there is no special query or relation support for non-mapped
        // interfaces in OpenJPA at this time.
        OpenJPAEntityManager em = null;
        try {
            em = emf.createEntityManager();
            em.createInstance(NonMappedInterface.class);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException e) {} // good
        if (em != null)
            em.close();
    }

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    }


    public void testCollectionInterfaces() {
        OpenJPAEntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        ManagedIface pc = em.createInstance(ManagedIface.class);
        Set set = new HashSet();
        set.add(createInstance(em, 3));
        set.add(createInstance(em, 4));
        set.add(createInstance(em, 5));
        pc.setSetI(set);

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    }


    private void createMixed() {
        OpenJPAEntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        MixedInterface pc = em.createInstance(MixedInterface.class);
        pc.setIntField(4);
        em.persist(pc);
        pc = new MixedInterfaceImpl();
        pc.setIntField(4);
        em.persist(pc);

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        // there is no special query or relation support for non-mapped
        // interfaces in OpenJPA at this time.
        OpenJPAEntityManager em = null;
        try {
            em = emf.createEntityManager();
            em.createInstance(NonMappedInterface.class);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException e) {} // good
        if (em != null)
            em.close();
    }

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    }


    public void testBasicOperations() {
        OpenJPAEntityManager em = emf.createEntityManager();
        SimpleManagedInterface pc =
            em.createInstance(SimpleManagedInterface.class);
        pc.setId(17);
        pc.setString("hello!");
        em.getTransaction().begin();
        em.persist(pc);
        em.getTransaction().commit();

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    }


    public void testManagedInterface() throws Exception {
        OpenJPAEntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        ManagedIface pc = em.createInstance(ManagedIface.class);
        pc.setIntFieldSup(3);
        pc.setIntField(4);
        pc.setEmbed(em.createInstance(ManagedInterfaceEmbed.class));


        pc.getEmbed().setEmbedIntField(5);

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        OpenJPAEntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        ManagedIface pc = em.createInstance(ManagedIface.class);
        pc.setIntFieldSup(3);
        pc.setIntField(4);
        pc.setEmbed(em.createInstance(ManagedInterfaceEmbed.class));


        pc.getEmbed().setEmbedIntField(5);
        assertEquals(5, pc.getEmbed().getEmbedIntField());
        em.persist(pc);
        Object oid = em.getObjectId(pc);

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    }


    public void testInterfaceOwner() {
        OpenJPAEntityManager em = emf.createEntityManager();
        ManagedInterfaceOwner pc = new ManagedInterfaceOwner();
        pc.setIFace(em.createInstance(ManagedInterfaceSup.class));
        pc.setEmbed(em.createInstance(ManagedInterfaceEmbed.class));
        pc.getIFace().setIntFieldSup(3);
        pc.getEmbed().setEmbedIntField(5);


        em.getTransaction().begin();

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    public void testInterfaceOwner() {
        OpenJPAEntityManager em = emf.createEntityManager();
        ManagedInterfaceOwner pc = new ManagedInterfaceOwner();
        pc.setIFace(em.createInstance(ManagedInterfaceSup.class));
        pc.setEmbed(em.createInstance(ManagedInterfaceEmbed.class));
        pc.getIFace().setIntFieldSup(3);
        pc.getEmbed().setEmbedIntField(5);


        em.getTransaction().begin();
        em.persist(pc);

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    }


    public void testCollection() {
        OpenJPAEntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        ManagedIface pc = em.createInstance(ManagedIface.class);
        Set set = new HashSet();
        set.add(new Integer(3));
        set.add(new Integer(4));
        set.add(new Integer(5));
        pc.setSetInteger(set);

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