Examples of org.apache.openjpa.kernel.OpenJPAStateManager

org.apache.openjpa.kernel.OpenJPAStateManager
Interface implemented by OpenJPA state managers. Each state manager manages the state of a single persistence capable instance. The state manager is also responsible for all communications about the instance to the {@link StoreManager}. The fetchXXXField and storeXXXField methods can be used to get and set fields of the managed persistent object. Most back-end code, however, should use the similar fetchXXX and storeXXX methods in place of the field methods. These methods function just like the field methods, but also pass the value through the externalizer and factory the field may have. @author Abe White

        startTx(pm);
        RuntimeTest1 rt1 = getObject(pm);


        Date d = rt1.getDateField();


        OpenJPAStateManager sm = getStateManager(rt1, pm);
        FieldMetaData fmd = sm.getMetaData().getField("dateField");
        assertEquals(d, sm.fetchInitialField(fmd.getIndex()));


        // == should pass here since we haven't made any modifications.
        assertTrue("mutable object fails == test; should not",
            d == sm.fetchInitialField(fmd.getIndex()));


        Date d2 = new Date();
        rt1.setDateField(d2);
        assertEquals(d, sm.fetchInitialField(fmd.getIndex()));
        endTx(pm);
        assertEquals(d2, sm.fetchInitialField(fmd.getIndex()));
        assertTrue("mutable object passes == test; should not",
            d2 != sm.fetchInitialField(fmd.getIndex()));
        endEm(pm);
    }

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    public void testInitialValueExceptions() {
        OpenJPAEntityManager pm = getPM();
        pm.setRestoreState(RestoreStateType.NONE);
        startTx(pm);
        RuntimeTest1 rt1 = getObject(pm);
        OpenJPAStateManager sm = getStateManager(rt1, pm);
        FieldMetaData fmd = sm.getMetaData().getField("stringField");
        try {
            sm.fetchInitialField(fmd.getIndex());
            fail("exception should be thrown by KodoSM.fetchInitialField");
        } catch (org.apache.openjpa.util.UserException e) {
            // expected case
        }
        endTx(pm);

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        ModRuntimeTest1 pc = new ModRuntimeTest1();


        OpenJPAEntityManager pm = getPM(false, false);
        startTx(pm);
        pm.persist(pc);
        OpenJPAStateManager sm = getStateManager(pc, pm);
        setUpMetaData(sm.getMetaData());
        try {
            // test instance level
            Object inst = new Object();
            assertNull(sm.getImplData());
            assertNull(sm.setImplData(inst, true));
            assertEquals(inst, sm.getImplData());
            assertTrue(sm.isImplDataCacheable());
            assertEquals(inst, sm.setImplData(null, false));
            assertNull(sm.getImplData());
            assertFalse(sm.isImplDataCacheable());
            sm.setImplData(inst, false);
            assertFalse(sm.isImplDataCacheable());


            // test field level
            Object f1 = new Object();
            Object f3 = new Object();


            assertNull(sm.getImplData(1));
            assertFalse(sm.isImplDataCacheable(1));
            assertNull(sm.setImplData(1, f1));
            assertEquals(f1, sm.getImplData(1));
            assertTrue(!sm.isImplDataCacheable(1));
            assertEquals(f1, sm.setImplData(1, null));
            assertNull(sm.getImplData(1));
            assertFalse(sm.isImplDataCacheable(1));
            sm.setImplData(1, f1);


            assertNull(sm.setImplData(3, f3));
            assertEquals(f3, sm.getImplData(3));
            assertTrue(sm.isImplDataCacheable(3));
            assertEquals(f1, sm.getImplData(1));


            // this should clear field data
            endTx(pm);


            assertEquals(inst, sm.getImplData());
            assertNull(sm.getImplData(1));
            assertNull(sm.getImplData(3));


            endEm(pm);
        } finally {
            tearDownMetaData();
        }

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        OpenJPAEntityManager pm = getPM(optimistic, true);
        startTx(pm);
        pm.persist(pc);
        Object oid = pm.getObjectId(pc);


        OpenJPAStateManager sm = getStateManager(pc, pm);
        assertNotNull(sm);
        setUpMetaData(sm.getMetaData());
        try {
            // set impl data
            sm.setImplData(key, value);
            assertEquals(value, sm.getImplData(key));
            endTx(pm);


            // test in nontransactional setting
            assertEquals(value, sm.getImplData(key));


            // test in next transaction
            startTx(pm);
            pc = (ModRuntimeTest1) pm.find(ModRuntimeTest1.class, oid);
            sm = getStateManager(pc, pm);
            assertNotNull(sm);
            if (pm.getOptimistic())
                assertEquals(value, sm.getImplData(key));
            else
                assertNull(sm.getImplData(key));
            endTx(pm);
            endEm(pm);
        } finally {
            tearDownMetaData();
        }


        // test in another pm for good measure
        pm = getPM(optimistic, true);
        pc = (ModRuntimeTest1) pm.find(ModRuntimeTest1.class, oid);
        sm = getStateManager(pc, pm);
        assertNotNull(sm);
        setUpMetaData(sm.getMetaData());
        try {
            sm.setImplData(key, value);
            assertEquals(value, sm.getImplData(key));


            // test in transaction; re-lookup pc to be sure it enters the trans
            startTx(pm);
            pc = (ModRuntimeTest1) pm.find(ModRuntimeTest1.class, oid);
            if (pm.getOptimistic())
                assertEquals(value, sm.getImplData(key));
            else {
                assertNull(sm.getImplData(key));
                sm.setImplData(key, value);
            }
            endTx(pm);


            // test outside of transaction
            assertEquals(value, sm.getImplData(key));
            endEm(pm);
        } finally {
            tearDownMetaData();
        }
    }

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            em.createQuery("select o from UnenhancedPropertyAccess o")
                .getSingleResult();
        em.getTransaction().begin();
        try {
            Broker b = JPAFacadeHelper.toBroker(em);
            OpenJPAStateManager sm = b.getStateManager(o);
            assertEquals(PCState.PNONTRANS, sm.getPCState());
            o.setLazyField("foo");
            assertEquals(PCState.PDIRTY, sm.getPCState());
        } finally {
                em.getTransaction().rollback();
        }
    }

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        // note: important the o1 is *not* in pm's cache at this point, so that
        // we know it takes another datastore trip to get o1


        // load o2 and retrieve its state manager
        OpenJPAStateManager sm = getStateManager(getO2(pm), pm);
        assertNotNull("SM is NULL", sm);


        // 'g' is the name of a 1-1 relation field to o1 in configured
        // fetch group 'g2'; make sure it is loaded
        int field = sm.getMetaData().getField("g").getIndex();
        try {
            assertTrue(sm.getLoaded().get(field));
            assertEquals(oid1,
                ((FetchGroupTestObject) sm.fetchObjectField(field)).getId());
        } catch (junit.framework.AssertionFailedError afe) {
            bug(623, afe, "One to one mappings do not work with custom "
                + "fetch groups");
        }
    }

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    }


    protected void checkObject(OpenJPAEntityManager pm,
        FetchGroupTestObject o, boolean a, boolean b,
        boolean c, boolean d, boolean e, boolean f) {
        OpenJPAStateManager sm = getStateManager(o, pm);
        BitSet loaded = sm.getLoaded();


        FieldMetaData[] fmds = sm.getMetaData().getFields();
        int i = 0;
        for (; i < fmds.length; i++) {
            if (fmds[i].getName().equals("a"))
                assertEquals(a, loaded.get(i));
            else if (fmds[i].getName().equals("b"))

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        FetchGroupTestObjectChild o, boolean a, boolean b,
        boolean c, boolean d, boolean e, boolean f, boolean childA,
        boolean childB, boolean childC, boolean childD) {
        checkObject(pm, o, a, b, c, d, e, f);


        OpenJPAStateManager sm = getStateManager(o, pm);
        BitSet loaded = sm.getLoaded();


        FieldMetaData[] fmds = sm.getMetaData().getFields();
        int i = 0;
        for (; i < fmds.length; i++) {
            if (fmds[i].getName().equals("childA"))
                assertEquals(childA, loaded.get(i));
            else if (fmds[i].getName().equals("childB"))

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        DFGTest a = (DFGTest) pm.getObjectId(oid);
        
        // check the non-dfg fields
        
        OpenJPAStateManager sm = getStateManager(a,pm);
        FieldMetaData fmd = sm.getMetaData().getField("nonDFGField");
        assertTrue("nonDFGField should not be loaded",
                !sm.getLoaded().get(fmd.getIndex()));
        
        fmd = sm.getMetaData().getField("dfgField");
        assertTrue("dfgField should be loaded",
                sm.getLoaded().get(fmd.getIndex()));
        
        int val = a.getNonDFGField();
        assertTrue("nonDFGField should be loaded",
                sm.getLoaded().get(fmd.getIndex()));
        assertEquals(2, val);
        
        pm.close();
    }

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    public void insert(OpenJPAStateManager sm, JDBCStore store, RowManager rm)
        throws SQLException {
        if (field.getMappedBy() != null)
            return;


        OpenJPAStateManager rel = RelationStrategies.getStateManager
            (sm.fetchObjectField(field.getIndex()), store.getContext());
        if (field.getJoinDirection() == field.JOIN_INVERSE)
            updateInverse(sm, rel, store, rm);
        else {
            Row row = field.getRow(sm, store, rm, Row.ACTION_INSERT);

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