Examples of org.apache.openjpa.enhance.PersistenceCapable

org.apache.openjpa.enhance.PersistenceCapable
The interface that persistent instances will implement. @author Marc Prud'hommeaux

         * Detach the fields of the state manager given on construction to
         * the persistence capable given on construction.
         * Only the fields in the given bit set will be copied.
         */
        public void detachFields(BitSet fgfields) {
            PersistenceCapable from = sm.getPersistenceCapable();
            FieldMetaData[] pks = sm.getMetaData().getPrimaryKeyFields();
            FieldMetaData[] fmds = sm.getMetaData().getFields();


            if (_copy)
                _to.pcReplaceStateManager(sm);

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        } else {
            PCState state = (_dirty.length() > 0) ? PCState.PDIRTY
                : PCState.PCLEAN;
            sm = (StateManagerImpl) broker.copy(this, state);
        }
        PersistenceCapable pc = sm.getPersistenceCapable();
        manager.setAttachedCopy(toAttach, pc);


        manager.fireBeforeAttach(toAttach, meta);


        // pre-load for efficiency: current field values for restore, dependent
        // for delete
        FieldMetaData[] fields = sm.getMetaData().getFields(); 
        int restore = broker.getRestoreState();
        if (_dirty.length() > 0) {
            BitSet load = new BitSet(fields.length);
            for (int i = 0; i < fields.length; i++) {
                if (!_dirty.get(i))
                    continue;


                switch (fields[i].getDeclaredTypeCode()) {
                    case JavaTypes.ARRAY:
                    case JavaTypes.COLLECTION:
                        if (restore == RestoreState.RESTORE_ALL
                            || fields[i].getElement().getCascadeDelete()
                            == ValueMetaData.CASCADE_AUTO)
                            load.set(i);
                        break;
                    case JavaTypes.MAP:
                        if (restore == RestoreState.RESTORE_ALL
                            || fields[i].getElement().getCascadeDelete()
                            == ValueMetaData.CASCADE_AUTO
                            || fields[i].getKey().getCascadeDelete()
                            == ValueMetaData.CASCADE_AUTO)
                            load.set(i);
                        break;
                    default:
                        if (restore != RestoreState.RESTORE_NONE
                            || fields[i].getCascadeDelete()
                            == ValueMetaData.CASCADE_AUTO)
                            load.set(i);
                }
            }
            FetchConfiguration fc = broker.getFetchConfiguration();
            sm.loadFields(load, fc, fc.getWriteLockLevel(), null);
        }        
        Object origVersion = sm.getVersion();
        sm.setVersion(_version);


        BitSet loaded = sm.getLoaded();
        int set = StateManager.SET_ATTACH;
        for (int i = 0; i < fields.length; i++) {
            if (!_loaded.get(i))
                continue;
            // don't reload already loaded non-mutable objects
            if (!_dirty.get(i) && loaded.get(i) && ignoreLoaded(fields[i]))
                continue;


            provideField(i);
            switch (fields[i].getDeclaredTypeCode()) {
                case JavaTypes.BOOLEAN:
                    if (_dirty.get(i))
                        sm.settingBooleanField(pc, i,
                            (loaded.get(i)) && sm.fetchBooleanField(i),
                            longval == 1, set);
                    else
                        sm.storeBooleanField(i, longval == 1);
                    break;
                case JavaTypes.BYTE:
                    if (_dirty.get(i))
                        sm.settingByteField(pc, i, (!loaded.get(i)) ? (byte) 0
                            : sm.fetchByteField(i), (byte) longval, set);
                    else
                        sm.storeByteField(i, (byte) longval);
                    break;
                case JavaTypes.CHAR:
                    if (_dirty.get(i))
                        sm.settingCharField(pc, i, (!loaded.get(i)) ? (char) 0
                            : sm.fetchCharField(i), (char) longval, set);
                    else
                        sm.storeCharField(i, (char) longval);
                    break;
                case JavaTypes.INT:
                    if (_dirty.get(i))
                        sm.settingIntField(pc, i, (!loaded.get(i)) ? 0
                            : sm.fetchIntField(i), (int) longval, set);
                    else
                        sm.storeIntField(i, (int) longval);
                    break;
                case JavaTypes.LONG:
                    if (_dirty.get(i))
                        sm.settingLongField(pc, i, (!loaded.get(i)) ? 0L
                            : sm.fetchLongField(i), longval, set);
                    else
                        sm.storeLongField(i, longval);
                    break;
                case JavaTypes.SHORT:
                    if (_dirty.get(i))
                        sm.settingShortField(pc, i, (!loaded.get(i)) ? (short) 0
                            : sm.fetchShortField(i), (short) longval, set);
                    else
                        sm.storeShortField(i, (short) longval);
                    break;
                case JavaTypes.FLOAT:
                    if (_dirty.get(i))
                        sm.settingFloatField(pc, i, (!loaded.get(i)) ? 0F
                            : sm.fetchFloatField(i), (float) dblval, set);
                    else
                        sm.storeFloatField(i, (float) dblval);
                    break;
                case JavaTypes.DOUBLE:
                    if (_dirty.get(i))
                        sm.settingDoubleField(pc, i, (!loaded.get(i)) ? 0D
                            : sm.fetchDoubleField(i), dblval, set);
                    else
                        sm.storeDoubleField(i, dblval);
                    break;
                case JavaTypes.STRING:
                    if (_dirty.get(i))
                        sm.settingStringField(pc, i, (!loaded.get(i)) ? null
                            : sm.fetchStringField(i), (String) objval, set);
                    else
                        sm.storeStringField(i, (String) objval);
                    objval = null;
                    break;
                case JavaTypes.PC:
                case JavaTypes.PC_UNTYPED:
                    if (fields[i].getCascadeAttach() == ValueMetaData
                        .CASCADE_NONE)
                        objval = getReference(manager, objval, sm, fields[i]);
                    else {
                        PersistenceCapable toPC = null;
                        if (objval != null && fields[i].isEmbeddedPC())
                            toPC = ImplHelper.toPersistenceCapable(objval,
                                broker.getConfiguration());
                        objval = manager.attach(objval, toPC, sm, fields[i],
                            false);

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        }
    }


    public void testCloseDetach() {
        root = em.merge(root);
        PersistenceCapable pc = (PersistenceCapable) root;
        assertFalse(pc.pcIsDetached());
        em.close();
        assertTrue(pc.pcIsDetached());
        // Make sure everything is detached and we can still use the Entity
        for (DMCustomerInventory c : root.getCustomerInventories()) {
            pc = (PersistenceCapable) c;
            assertTrue(pc.pcIsDetached());
            pc = (PersistenceCapable) c.getItem();
            assertTrue(pc.pcIsDetached());


        }
    }

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                            _loc.get("fail-to-get-update-value"));
                }
            }


            int i = fmd.getIndex();
            PersistenceCapable into = ImplHelper.toPersistenceCapable(ob,
                _broker.getConfiguration());


            // set the actual field in the instance
            int set = OpenJPAStateManager.SET_USER;
            switch (fmd.getDeclaredTypeCode()) {

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                    //    magazine has a EAGER or LAZY ManyToOne publisher
                    // For each member (Magazine) in the collection, 
                    // set its inverse relation (Publisher).
                    for (Iterator<?> itr = ((Collection<?>) coll).iterator();
                        itr.hasNext();) {
                        PersistenceCapable pc = (PersistenceCapable) itr.next();
                        if (pc == null) {
                            continue;
                        }
                        OpenJPAStateManager sm = (OpenJPAStateManager) pc.pcGetStateManager();
                        ClassMapping cm =
                            (ClassMapping) _conf.getMetaDataRepositoryInstance().getCachedMetaData(pc.getClass());
                        FieldMapping[] fmd = cm.getFieldMappings();
                        for (int j = 0; j < fmd.length; j++) {
                            // don't check the oids for basic fields.
                            if (fmd[j].isTypePC()) {
                                Object oid = sm.getIntermediate(fmd[j].getIndex());

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    private void setMappedBy(Object oid, OpenJPAStateManager sm, Object coll,
        Result res) {
        // for inverseEager field
        FieldMapping mappedByFieldMapping = field.getMappedByMapping();
        PersistenceCapable mappedByValue = null;
        
        if (mappedByFieldMapping != null) {
            ValueMapping val = mappedByFieldMapping.getValueMapping();
            ClassMetaData decMeta = val.getTypeMetaData();
            // this inverse field does not have corresponding classMapping
            // its value may be a collection/map etc.
            if (decMeta == null) 
                return;
          
            StateManagerImpl owner = ((StateManagerImpl)sm).getObjectIdOwner();
            if (oid.equals(owner.getObjectId())) {
                mappedByValue = owner.getPersistenceCapable();
                res.setMappedByFieldMapping(mappedByFieldMapping);
                res.setMappedByValue(mappedByValue);
            } else if (coll instanceof Collection && 
                ((Collection) coll).size() > 0) {
                // Customer (1) <--> Orders(n)
                // coll contains the values of the toMany field (Orders)
                // get the StateManager of this toMany value
                // and find the value of the inverse mappedBy field (Customer)
                // for this toMacdny field
                PersistenceCapable pc = (PersistenceCapable)
                    ((Collection) coll).iterator().next();
                OpenJPAStateManager sm1 = (OpenJPAStateManager) pc.
                    pcGetStateManager();
                
                ClassMapping clm = ((ClassMapping) sm1.getMetaData());
                FieldMapping fm = (FieldMapping) clm.getField(
                    mappedByFieldMapping.getName());

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                // map are stored in the table of the mapped-by entity  
                setMapKey(sm, rel, store, row);
            }
            
            if (field.isBiMTo1JT()) { // also need to update the join table
                PersistenceCapable invPC = (PersistenceCapable)sm.fetchObject(
                    field.getBi_1ToM_JTField().getIndex());
                Row secondaryRow = null;
                if (invPC != null) {
                    secondaryRow = rm.getSecondaryRow(field.getBi1ToMJoinFK().getTable(),
                        Row.ACTION_INSERT);

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            return;
        ClassMapping cls = field.getIndependentTypeMappings()[0];


        // for inverseEager field
        FieldMapping mappedByFieldMapping = field.getMappedByMapping();
        PersistenceCapable mappedByValue = null;


        if (mappedByFieldMapping != null) {
          ValueMapping val = mappedByFieldMapping.getValueMapping();
          ClassMetaData decMeta = val.getTypeMetaData();
            // eager loading a child from its toOne parent and

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            }
            Object id = util.getIdentifier(instance);
            if (id != null)
                return id.toString();
            if (instance instanceof PersistenceCapable) {
                PersistenceCapable pc = (PersistenceCapable)instance;
                StateManager sm = pc.pcGetStateManager();
                id = sm == null ? null : sm.fetchObjectId();
            }
            return id == null ? "null" : id.toString();
        }

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                    //    magazine has a EAGER or LAZY ManyToOne publisher
                    // For each member (Magazine) in the collection, 
                    // set its inverse relation (Publisher).
                    for (Iterator<?> itr = ((Collection<?>) coll).iterator();
                        itr.hasNext();) {
                        PersistenceCapable pc = (PersistenceCapable) itr.next();
                        if (pc == null) {
                            continue;
                        }
                        OpenJPAStateManager sm = (OpenJPAStateManager) pc.pcGetStateManager();
                        ClassMapping cm =
                            (ClassMapping) _conf.getMetaDataRepositoryInstance().getCachedMetaData(pc.getClass());
                        FieldMapping[] fmd = cm.getFieldMappings();
                        for (int j = 0; j < fmd.length; j++) {
                            // don't check the oids for basic fields.
                            if (fmd[j].isTypePC()) {
                                Object oid = sm.getIntermediate(fmd[j].getIndex());

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