001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.datanucleus;
022
023import java.util.Map;
024
025import javax.jdo.spi.Detachable;
026import javax.jdo.spi.PersistenceCapable;
027
028import org.granite.logging.Logger;
029import org.granite.messaging.amf.io.util.DefaultClassGetter;
030
031/**
032 * @author William DRAI
033 */
034public class DataNucleusClassGetter extends DefaultClassGetter {
035
036    public final static Logger log = Logger.getLogger(DataNucleusClassGetter.class);
037    
038
039    @Override
040    public Class<?> getClass(Object o) {
041        // Nothing special here: DataNucleus uses bytecode enhancement
042        return super.getClass(o);
043    }
044    
045    @Override
046    public boolean isEntity(Object o) {
047        return o instanceof PersistenceCapable;    
048    }
049    
050    
051    @Override
052    public boolean isInitialized(Object owner, String propertyName, Object propertyValue) {
053        if (propertyValue != null || !(owner instanceof PersistenceCapable))
054                return true;
055        Map<String, Boolean> loadedState = DataNucleusExternalizer.getLoadedState((Detachable)owner, getClass(owner));
056        return loadedState.containsKey(propertyName) && loadedState.get(propertyName);
057    }
058    
059    @Override
060    public void initialize(Object owner, String propertyName, Object propertyValue) {
061        if (propertyValue != null)
062                propertyValue.toString();
063    }
064}